126 TESTUDINID 
a. 9, spir. Tapana, Tehuantepec. F, Sumichrast [C.]. 
b-c. 3, spir. Tonala, Chiapas. F. Sumichrast [ C.]. 
d. Q, stfid. —? (Type of 2. frontalis.) 
Chelopus funereus, Cope, Journ. Ac. Philad. (2) viii. 1876, p. 154, 
from Limon, Costa Rica, may probably likewise be regarded as a 
variety of V. punctularia. It is based on young specimens, and 
the adult will probably be found to be of very obscure colour. The 
head and neck black above, without any markings. 
4, Nicoria gabbii. 
Chelopus gabbii, Cope, Journ. Ac. Philad. (2) viii. p. 153 (1876). 
Form resembling Testudo, stout, and with short thick feet with 
very short webs. Top of shell flat in profile, bearing a well-marked 
but obtuse keel. Vertebral shields broader than long in the adult, 
the last one the largest of all. Plastron strongly notched behind 
and concavely truncate in front. Snout nearly vertical, beak not 
notched. Hind leg with a row of large scales on the inner front of 
the lower half of the tibia, continuous with those covering the inner 
toe. Colour above wood-brown, middle of plastron darker brown, 
remainder of lower surfaces wax-yellow. A faint red band round 
the snout and a short one on the median line above; a yellowish, 
brown-edged band from the temple to the side of the neck, and a 
similar one from the eye to the tympanum; neck and limbs yellowish, 
speckled with brown and black; hind limbs blackish on the outer 
side. 
Length of carapace 186 millim. 
Costa Rica. 
5. Nicoria annulata. 
Geoclemmys annulata, Gray, Proc. Zool. Soc. 1860, p. 251, pl. xxix. 
Clemmys annulata, Strauch, Chelon. Stud, p. 82 (1862), and Verth. 
Schildkr. p. 82 (1865). 
Rhinoclemmys annulata, Gray, Ann. § Mag. N. H. (8) xii. p. 183 
(1863), and Suppl. Cat. Sh. Rept. 1. p. 29 (1870). 
Chelopus annulatus, Cope, Proc, Ac. Philad, 1865, p. 186. 
Habit of a TZestudo. Shell not much depressed, unicarinate. 
Vertebral shields constantly much broader than long, nearly as 
broad as the costals; nuchal small. Plastron large; the width of 
the bridge exceeds the length of the posterior lobe, which is angu- 
larly emarginate; front lobe truncate or openly emarginate ante- 
riorly. Axillary and inguinal shields present, very small. Head 
rather small; snout but feebly projecting; upper jaw slightly 
hooked, not notched; the width of the mandible at the symphysis 
is much less than the horizontal diameter of the orbit. No trace of 
web between the digits. Tail not longer than the head. Carapace 
brown, uniform or variegated with yellowish ; plastron dark brown, 
