SYSTEMATIC ACCOUNT OF THE SPECIES. 129 



Gular scales miiiute and granular; double row of small triangular lobes on the 

 chin; gular appendage very large, extending posteriorly to the thorax. Body 

 strongly compressed. Dorsonuchal crest continuous with the posterior border 

 of the casque. Body above and on the sides covered with round flat scales of 

 irregular shape and size separated by areas covered with similar but very much 

 smaller scales; ventral region with minute granules. Limbs rather short, the 

 hind limb being extended forward along the body reaches only to the axilla; 

 digits strongly dilated. Tail compressed, about as long as head and body, 

 covered \vith irregular sized scales and below with smaller keeled ones. 



Colour (in life) : — Grayish varjdng to various shades of brown, never 

 very dark, sometimes yellowish. The colour usually not uniform but variously 

 marbled or blotched. The gular appendage is rosy, slightly purplish, with 

 darker spots and streaks in the upper portion. 



Dimensions: — Total length 326 mm. 



Tips of snout to vent 138.5 mm. 



Vent to tip of tail 187.5 mni. 



Width of head 19.2 mm. 



Fore leg 57 mm. 



Hind leg 73 mm. 



This remarkable hzard of a very distinct monotypic genus is wholly con- 

 fined to Cuba. It occurs in all parts of the Island where there are forests both 

 in lowlands and highlands. We have seen or collected specimens at Aguada 

 de Pasajeros, vicinity of Manzanillo, Los Negros in Jiguani, La Maya near Alto 

 Songo, and about Guantanamo. There is a specimen in the M. C. Z. from 

 near San Diego de los Banos in westeni Cuba. The species is rare everywhere 

 and is one which is universally feared by the natives, who beUeve it to be very 

 venomous. Of the breeding habits of this hzard nothing is known. The only 

 young examples which have been recorded were two taken by the junior author 

 at La Maya, and "El Corojo" de San Carlos, Guantanamo, and a very young 

 one taken during its first shedding, its umbihcal area scarcely closed, by the 

 senior author in October, 1918, on the Sierra de Anafe near Guayabal, Havana 

 Province. The second mentioned young example which is about Sj" from 

 snout to vent has a series of barbel-hke scales, soft and almost hair-like, ex- 

 tending from the symphysis of the lower jaws to the origin of the dewlap. In 

 all respects they are similar to the adults except that the head is markedly 

 AnoUs-like and lacks the casque-development with its characteristic ornamenta- 



