276 PROCEEDINGS OF THE NATIONAL MUSEUM. 



<■. Without supines or teeth on the front liehind the antennal peduncle. 



iL With four spines on the posterior margin of the carapace hairdi, p. ol7 



(I. Without spines on the posterior niartrin; margin roughened l)y a large 

 nunil)er of sharp granules. 



e. Rostrum straight antonii, p. 316 



e. Eostrum curved heringana, i). 279 



r. With spines or teeth on the front behind the antennpe. 



(J. Spines wanting on the gastric area .tjnnomilala, p. 827 



ij. Spines on the gastric area two or more. 



e. One eye spine - - crasm, p. .318 



r. Two eye spines. 



f. Crest of palms spiny. 

 r/. Merus of chelipeds with ten to twelve spines (exclusive of the ter- 

 minal spines) simUis, p. 326 



g. Merus of chelipeds with six to eight spines verrilli, p. 291 



/'. Crest of palms not spiny nitida, p. 323 



a. Eye spines not present. 



h. Rostrum l>road, with subparallel sides; extends considerably beyond the eyes 

 where it terminates in a trident. 

 c. Rostrum long and strongly bent upward, as in (Jalicantha. 



d. Carapace without spines except on margin expansa, p. 282 



d. Carapace with spines on the surface • gUU, p. 283 



c. Rostral point short, horizontal (Galathodes). 

 d. Gastric area armed with two spines or spinules. 



e. Palm spiny above and below ., trifida, p. 329 



e. Palm not spiny mina, p. 285 



d. Gastric area without spines or spinules. 



e. Maxillipeds with the inferior margin of merus armed with three spines. 



./'. Sides of rostrum convex trideiUata, p. 328 



/. Sides of rostrum straight hahnmmsis, p. 278 



e. Maxillipeds with the inferior margin of the merus armed with two spines. 

 /. Both spines slender from the base. 



g. Carpus of chelipeds with a single long slender sTpine. tenuirostris, p. 289 



g. Carpus with three long slender spines latifrotis, p. 321 



/. Both spines not slender. 



g. Fingers of the chelipeds acuminate from base to tip. acuminata, p. 277 



g. Fingers not acuminate modesta, p. 286 



h. Rostrum not tridentate. 



c. Abdomen unarmed. 



d. Eyes movable. 



e. Gastric area with two very short conical spines plafiro.ttris, p. 324 



e. Gastric area without spines. 

 /. With a sharp spine at the anterolateral angle. 

 g. Rostrum broadest at base. 



//. Spine of anterolateral angle very short cylindropus, p. 281 



/(. Spine of anterolateral angle long sigshei, p. 326 



g. Rostrum broadest in the middle armata, p. 316 



/. Without spine on the anterolateral angle. 



g. Eyes long, cylindrical cylindrophthahnns, pp. 319, 281 



g. Eyes short polita, p. 324 



d. Eyes innnovable. 



e. Surface of carapace smooth, punctate espinis, p. 282 



e. Surface of carapace rough, coarsely granulated sfjiiamosa, p. 327 



c. Abdomen anned with spines or tubercles. 



