THE BRACHYURA AND MACRURA OF PORTO RICO. 
127 
same color on ischial, meral, and propodal joints. Specimens which have been long in alcohol 
show no stripes. 
Length, about 11 mm. 
Boqueron Bay; Playa de Ponce; Arroyo. Port Jackson, Australia (Stimpson); Port Stephens, 
Australia (Haswell); Fouquets, Mauritius (Richters) ; Tahiti (Ortmann) ; Cuba (Guerin); St. Thomas, 
West Indies ( Albatross ); Gulf of Mexico, 26 to 27 fathoms, stations 2372, 2374 ( Albatross ); Bermudas 
(G. B. Goode, coll.). 
Family PASIPHiElD^ Kingsley, 1878. 
Rostrum small or obsolete; mandibular palp two or one-jointed or wanting. Trunk-legs with 
exopods. Third, fourth, and fifth pairs inferior in size to the two pairs of chelipeds, the fourth being 
generally smallest of all. 
LEPTOCHELA Stimpson, 1860. 
Leptochela Stimpson, Proc. Acad. Nat. Sci. Phila., xn, 42 (111), 1860. 
Carapace partially cristate; lateral walls and margin destitute of spines. First pair of antennae 
biflagellate. Mandibles with a short one-jointed palp. Second maxillipeds not pediform, the last 
joint armed with long spines or hairs. First and second pairs of feet compressed, chelate, slender, 
with long parallel digits. Three posterior pairs short. Pleon with the fifth segment more or less 
abruptly curved. Telson long, narrow, and tapering. 
Key to the Porto Rican species of the genus Leptochela. 
A. Orbits entire. Carina of fifth abdominal segment dentate carinata 
A'. Orbits serrate or spinulons. Carina of fifth abdominal segment entire serratorbita 
Leptochela carinata Ortmann. 
Leptochela carinata Ortmann, Dec. u. Schiz. Plankton Exped., 41, pi. iv, f. 1, 1893. 
Anterior portion of carapace with a median crest extending to point of rostrum; in females this 
crest extends the length of the carapace,- and there is also a sharp lateral crest, slightly curved, but 
subparallel to median, and not far from it, and reaching from orbit nearly to posterior margin. In the 
males the median carina is on anterior half only, and there is only a faint indication of the lateral 
carinse. Rostrum shorter than eye-stalks, deflexed. Orbits entire. Antennular peduncles reaching to 
middle of antennal scale. Fingers of first and second pair of feet about as long as or a little longer 
than palm; palm 1.5 times as long as carpus. Fourth abdominal segment carinated in its posterior 
half; fifth segment carinated throughout its length, the carina cut into four triangular teeth; sixth 
segment with a median spine or tubercle at its anterior extremity. Telson with an anterior submedian 
pair of spinules and three lateral marginal pairs, equidistant, the first pair opposite the submedian 
pair, the second pair at middle of margin, and third pair at extremity. 
Length of egg-bearing female, west Florida, 28 mm.; length of carapace and rostrum, 7.8 mm. 
Off Vieques, 6 to 14 fathoms, stations 6084, 6085, 6096, 3 specimens; off Culebra, 15 fathoms, 
station 6093, 1 specimen. Off mouth of Tocantins, Brazil, depth 50 to 100 meters (type locality) ; Rum 
Cay, Bahamas (Albatross) ; Gulf of Mexico, 19 fathoms, station 5084 (schooner Grampus). 
Leptochela serratorbita Bate. 
Leptochela serratorbita Bate, Challenger Rept., Zool., xxiv, 859, pi. cxxxix, f. 1, 1888. 
Abdomen more than 2.75 times as long as the carapace. Anterior half of the carapace carinated; 
rostrum almost horizontal, as long as or longer than the eye-stalks, orbits finely serrated or spinulous, 
antennal scale shorter than in carinata, the antennular peduncle reaching beyond middle of scale. 
Fingers of both first and second pairs of feet a little longer than palm, which is only a trifle longer 
than carpus. Fourth and fifth segments of abdomen carinated, entire; sixth segment with an anterior 
median tubercle, and a posterior spine either side of middle. Telson with an anterior submedian 
pair of spines and three lateral marginal pairs, of which the anterior pair is at the anterior fourth, 
the second pair at the middle, the third pair near posterior extremity. 
Length of female, Key West, 18 mm.; length of carapace and rostrum, 4.7 mm. 
Off Vieques, 15 fathoms, station 6091, 1 specimen; off Culebra, 15 fathoms, station 6093, 4 
specimens. St. Thomas, W. I., shallow water (type locality); St. Thomas (Albatross); Key West, 
taken at surface by electric light (Albatross) . 
