OCR Text |
Show 698 MR. ST. GEORGE MIVART ON PLETHODON PERSIMILIS. [JuilC 2/, Fig. 2. Fig.l. Fig. 4. Fig. 3. Fig. 1. Dorsum of right manus of Pectoglossa persimilis. 2. Dorsum of right pes of Pectoglossa persimilis. 3. Dorsum of right manus of Plethodon glutinosus. 4. Dorsum of right pes of Plethodon glutinosus. Indeed I believe there may be more grounds for associating it with the Japanese form Onychodactylus than with the last-mentioned American species, an arrangement which would harmonize well with the facts of geographical zoology. Nevertheless, as it has not naillike processes on the digits, nor yet a precloacal fold, both of which exist in the last-mentioned genus, I think it better to place it in a genus by itself, for which I propose the name Pectoylossa *, retaining of course the specific name chosen by Dr. Gray; so that the species will be named Pectoglossa persimilis. Fig. 6. Fig. 5. Inside of mouth of Pectoglossa persimilis. 6. Inside of mouth of Plethodon glutinosus. In the fixed condition of the posterior part of the tongue Pectoglossa agrees with both Hynobius and Onychodactylus; but the transverse position of the palatine teeth causes it more to resemble the latter genus. I am inclined to think that when the skull comes to be examined it will he found that there are two distinct premaxillary bones. The characters of the genus may perhaps be thus expressed :- PECTOGLOSSA. Toes 4/5, first of each manus rather long, first of each pes not very short; digits with rounded ends and no simulation of nails ; * nj/KTtis, y\<Zcrcra. |