THE BRACHYURA AND MACRTJRA OF PORTO RICO. 
43 
smaller than buccal cavity; the exognath is half the width of endognath. Chelipeds unequal, long and 
strong, the arm reaching far beyond carapace, spinulous. Legs long and narrow, spinulous; dactyli 
long. Abdomen of male with third to fifth segments fused. 
Melybia thalamita Stimpson. 
Melybia tkalamita Stimpson, Bull. Mus. Comp. Zool., 11 , 144, 1871. 
Carapace somewhat convex, slightly pubescent; surface nearly even, minutely granulated. First 
tooth of antero-lateral margin small, sometimes bifid at tip; second and third teeth long, spiniform; 
fourth small, spiniform. Median notch of front large, V-shaped; margins of lobes nearly straight, 
sloping backward toward orbit. Margin of orbit minutely crenulated. Merus of chelipeds armed 
with spines on upper and inner margin. Carpus spinulous on outer surface; three spines along inner 
margin, middle one the longer. Manus with a double row of spines above. Fingers two-thirds as 
long as palm, broad, compressed, not gaping. Ambulatory legs sparsely hairy; merus with a row of 
spines on the anterior margin; one spine near distal end of posterior margin in the first three pairs. 
Dactyl us nearly as long as propodus. 
Length of male, 6.9 mm.; width, 9.8 mm. 
Florida Straits to Aspinwall, 15 to 201 fathoms. Off Culebra, 15 to 15£ fathoms, stations 6087 and 
6093; off Vieques, 12£ fathoms, station 6095. 
Genus DOMECIA Eydoux & Souleyet. 
Domecia Eydoux & Souleyet, Voy. Bonite, I, Crust., 234, 1842. 
Carapace somewhat transversely oval, but nuch contracted posteriorly, flat, somewhat hairy, with 
no trace of regions. Fronto-orbital border not much less than greatest breadth of carapace. Front 
profusely spinate, the spines being sharp and a little curved. The antero-lateral borders pass backward 
with but little outward slope, a little shorter than concave and convergent postero-lateral borders, and 
armed with a number of sharp curved spines. The orbits are at antero-lateral angles of carapace and 
do not conceal the eyes; their edge shows no fissures nor sutures; their upper and lower inner angles 
are broadly in contact, or almost in contact, so as to exclude antennae. The antennules fold nearly 
transversely. The basal antennal joint, hardly reaches the front, though its outer angle is produced 
toward front; the flagellum is short, hardly as long as orbit. Buccal cavern broad; crests of endostome 
not very strong, nor is the foliaceous process of first maxillipeds produced far forward; external 
maxillipeds very long, merus remarkably broad and short. Chelipeds somewhat unequal, short, and 
not very massive; arm almost entirely hidden by carapace; fingers compressed, pointed. Legs stout, 
especially meropodites. The abdomen of the male has all seven segments distinct and separate. 
Domecia hispida Eydoux & Souleyet. 
Domecie lierisste Eydoux & Souleyet, Voy. Bonite, pi. ir, figs. 5 to 10, 1841 (?). 
Domecia hispida Eydoux & Souleyet, Voy. Bonite, I, Crust., 235, 1842. 
Carapace covered with light-colored hairs; antero-lateral border with five or six (including 
orbital angle) acute dark-tipped spines, and several similar spines on carapace just inside antero-lateral 
border, and also just inside spiny fronto-orbital border. Orbital margin and prominent edge of the 
epistome finely denticulate. Merus of external maxillipeds extremely broad and short, with an 
elevated patch of denticles on outer surface. Chelipeds a little unequal; the arm, wrist, hand, and 
dactylus are all studded with acute spines. Legs stout, of moderate length; anterior surface of last 
four joints fringed with hairs, anterior edge of merus spinate, as also, but much less distinctly, is the 
anterior edge of the carpus and propodus. 
Length of male, 6.6 mm.; width, 9.3 mm. 
Florida Reefs; West Indies; Pernambuco and Alagoas, Brazil; Cape Verde Islands; Senegal; 
islands of the Pacific and Indian oceans. Porto Rico: Mayaguez, on coral reef; Puerto Real; Playa de 
Ponce Reef; Ensenada Honda, Culebra; off Vieques, 16 fathoms, station 6092; off Ilumacao, 10 fathoms, 
station 6097; San .Tuan (G. M. Gray, coll.). 
