12G TESTTTDrNID^. 



a. 2 f spir- Tapana, Tehuantepec. F. Sumiclirast rc.]. 



b-c c? spir. Tonala, Chiapas. F. Sumichra^t [C.]. 



^7. $,stflcl. ? {Ty^e oiH.frotitalis.) 



Chelopus funereus. Cope, Journ. Ac. Philad. (2) viii, 1876, p. 154, 

 from Liraon, Costa Ilica, may probably likewise be regarded as a 

 variety of N. imnctularia. 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. 

 Cbelopus 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 Eica. 



5. Nicoria animlata. 



Geoclemmys annulata, Gray, Pj-oc. Zool. Soc. 1860, p. 231, pi. xxix. 

 Clemmys annulata, Strmich, Chelon. Stud. p. 32 (1862), and Verth. 



Schifdkr. p. 82 (18G5). 

 Rhinoclemmys annulata, Gray, Ann. ^- Maq. N. H. (3) xii. p. 183 



(1863), and Suppl. Cat. Sh. Pept. i. p. 29 (1870). 

 Cbelopus annulatus, Coi>e, Proc. Ac. Philad. 1865, p. 186. 



Habit of a Testudo. Shell not much depressed, unicarinate. 

 Vertebriil 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 emargiuato ; 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, 



