164 BULLETIN 166, UNITED STATES NATIONAL MUSEUM 



surface of carapace where it is finer behind the hepatic region. A 

 granular tubercle on subhepatic protuberance and two on lateral 

 margin, one of wliich is at widest point of carapace and the outer 

 anterolateral. Front almost transverse, forming a very wide V, 

 median sulcus deep. 



Outer maxillipeds sparingly granulate, inner two-thirds of ischium 

 smooth. Chelipeds narrow, less than twice as long as carapace, 

 pubescent; merus sUghtly constricted near carpus, coarsely granulate 

 except for a smooth patch on the distal two-fifths above and below. 

 Carpus and manus finely granulate along outer margin; dactylus a 

 little longer than outer margin of manus. Legs pubescent above on 

 merus, carpus and propodus; dactylus fringed with hair on either 

 side. Sternum coarsely granulate, interstices pubescent. Abdomen 

 very narrow, first tliree segments granulate. 



Female: Lateral tubercles less prominent than in male, obsolescent; 

 lateral posterior spines farther apart, forming a greater angle with 

 median spine; posterior margin more produced at middle. 



Measurements. — Male holotype, length of carapace 22.3, width 

 21.6 mm; female paratype, length 24, width 22.8 mm. 



Range. — Gulf of Mexico to Brazil; 3 to 34 fathoms. 



Material examined. — See table 52, page 165. 



Genus MYROPSIS Stimpson 



Myropsis Stimpson, Bull. Miis. Comp. Zool., vol. 2, p. 156, 1871 (type, M. 

 quinquespinosa Stimpson). — A. Milne Edwards, Bull. Mus. Comp. Zool., 

 vol. 8, p. 21, 1880. 



Carapace subglobular, narrowed anteriorly; cardiac and intestinal 

 regions defined; five posterior spines. The anterior extremity of the 

 septa of the branchial channels does not extend beyond orbits. 

 Basal article of antennules indurated and crested. Chelipeds very 

 long and slender. Male abdominal segments 3-6 fused. 



Massachusetts to Venezuela. 



MYROPSIS QUINQUESPINOSA Stimpson 



Plate 46, Figures 1-3 



Myropsis quinquespinosa Stimpson, Bull. Mus. Comp. Zool., vol. 2, p. 157, 1871 

 (type localities, Tennessee Reef, Florida Keys, 21 and 82 fathoms; types 

 not extant). — A. Milne Edwards, Bull. Mus. Comp. Zool., vol. 8, p. 21, 

 1880. — A. Milne Edwards and Botjvier, Mem. Mus. Comp. Zool., vol. 

 27, p. 110, 1902. 



Myropsis constricta A. Milne Edwards, Bull. Mus. Comp. Zool., vol. 8, p. 21, 

 1880 (type locality, Barbados, 100 fathoms; type in M. C. Z.). — A. Milne 

 Edwards and Bouvier, Mem. Mus. Comp. Zool., vol. 27, p. 110, pi. 21, 

 figs. 4-6; pi. 22, figs. 1-5, 1902. 



Myropsis goliath A. Milne Edwards, Bull. Mus. Comp. Zool., vol. 8, p. 21, 1880 

 (type locality, Cariacou, Windward Islands, 163 fathoms; type in M. C. Z.). — 

 A. Milne Edwards and Botjvier, Mem. Mus. Comp. Zool., vol. 27, p. Ill, 

 pi. 21, figs. 1-3, 1902. 



