. Il campo Canadese-naturalista. 38 Il canadese Field-Naturalist [Vol. 63 Il 3 luglio 1930, uno dei nostri giovani mi ha chiamato per vedere un serpente che era in atto di rinnova la sua pelle. Questo è stato un bel esemplare del Puget Sound Garter Snake (Thamnophis ordinoides ordinoides), lungo circa due piedi, con un rosso brillante striscia dorsale e bianco strisce laterali. Il luogo in cui i laici è stato un soleggiato, sud- erba rivolta verso la banca a bordo di un prato; e consisteva in tutto di corti e sottili, tappeto erboso senza pietre o altri ostacoli. Lo spot è stato evidentemente favorito per scopi di desquamazione; per sul followi

• Collaboratore: Book Worm / Alamy Foto Stock
• ID dell’immagine: RG2TPK
• Dimensioni dei file: 7,1 MB (140,6 KB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 3372 x 741 px | 28,5 x 6,3 cm | 11,2 x 2,5 inches | 300dpi

Altre informazioni

Questa foto è un'immagine di pubblico dominio, il che significa che il copyright è scaduto o che il titolare del copyright ha rinunciato a tale diritto. Alamy addebita un costo per l'accesso alla copia ad alta risoluzione dell'immagine.

Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.

. The Canadian field-naturalist. 38 The Canadian Field-Naturalist [Vol. 63 On July 3, 1930, one of our young people called me to see a snake that was in the act of sloughing its skin. This was a handsome specimen of the Puget Sound Garter Snake (Thamnophis ordinoides ordinoides), about two feet long, with a bright red dorsal stripe, and white lateral stripes. The place where it lay was a sunny, south- facing grass bank at the edge of a lawn; and consisted wholly of short, fine turf, without stones or other obstructions. The spot was evidently favoured for sloughing purposes; for on the following day two snakes and a large lizard were seen there, and several discarded skins were found there that summer.. Fig. 1 The snake was lying with the fore part of the body strongly bent in a double curve, and the rest of the body straight, (fig. 1). When we first saw it, the process was already well under way. The doubly curved forepart of the body (probably with the long ventral plates raised to hold the ground by their edges, thus giving a better grip) provided strong and steady anchorage. It seemed to me, on stooping down to get a close view, that the body looked tense. Our elder daughter, who watched part of the process while the snake was actually Fig. 2 working to free itself, noted that the front, curved part of the body remained still; the next intermediate part was wriggling slowly forwards; and the part still enclosed in the old skin (i.e., the tail) was quiescent (fig. 2). At intervals, the middle portion of the body wriggled slowly forward, extricating itself, as it went, about an inch and a half at a time, from the old skin; and the snake then rested for a while. Though stooping down within a foot or two of it, and watching closely, I could not see how the snake managed to extrovert the skin, while moving forward out of it. The old skin seemed to turn back automa- tically, in the same way in which the fingers of a close-fitting kid glove tend to turn inside out, whe

Parole chiave associate all'immagine

• bookcentury1900
• bookcolle