MEXICAN, CENTRAL AMERICAN, AND CUBAN CAMBARI 7 



outer and inner sides, the hairs extending upon the distal part 

 of the palm. (In young individuals, the pilosity is less marked 

 or even absent.) Carpopodite and meropodite granulated, and 

 with a few granules developed into sharp spines on the inner 

 and lower sides (indistinct in old individuals) ; third pereiopods 

 hooked in the male ; first abdominal appendages of male with 

 inner part pointed and straight, longer and much thinner than 

 the broad and blunt outer part; shoulder of anterior margin 

 only slightly developed ; inner face flattened and only slightly 

 dilated. Annulus ventralis of the female conically elevated. 



Description of adult male of the first form : 



Rostrum subplane, margins elevated, gradually convergent, 

 slightly convex, chiefly so anteriorly, with a distinct marginal 

 spine on each side a short distance from the tip ; acumen trian- 

 gular, rather short, shorter than width of rostrum at base ; mar- 

 gins of acumen hairy ; postorbital ridges subparallel, ending 

 in a spine anteriorly ; carapace compressed, thickly and finely 

 punctate, and finely granulated on the sides ; suborbital angle 

 blunt ; branchiostegal spine small ; cervical groove sinuate, two 

 lateral spines on each side behind the cervical groove ; areola 

 very narrow, but not obliterated, with one irregular row of punc- 

 tations, longer than half of the anterior section of the carapace 

 (including rostrum). 



Abdomen about as long and as wide as the carapace; basal 

 segment of telson with two (rarely three) spines on each side ; 

 posterior segment broadly rounded, short. 



Epistoma with anterior part triangular, obtuse ; antcnnal 

 scale broad, broadest in the middle ; flagellum longer than the 

 carapace, but shorter than the whole body. 



First pereiopods elongated, subcylindrical ; hand elongated, 

 slightly compressed, with subparallel margins, widest at the base 

 of the fingers ; surface thickly granulate, granules tuberculi- 

 form, rounded, a-ery distinct, subequal ; fingers about as long 

 as the palm, both on outer faces with a smooth longitudinal 

 ridge ; for the rest, the fingers are thickly pilose on outer and 

 inner side, the pilosity extending a short distance upon the palm 

 on both faces ; carpopodite subcylindrical, with an indistinct, 

 longitudinal sulcus on upper side ; granulated everywhere, gran- 



