no. 2067. NEW SPECIES OF CRABS— RATHBUN. 139 



CARCINOPLAX SPINOSISSIMA, new species. 



Type-locality. — Between Cebu and Bohol: Lauis Point Light, 

 N. 10° E., 3.5 miles; lat. 10° 10' N.; long. 123° 53' 15" E.; 165 

 fathoms; gy. m., s.; temp. 54.4° F.; March 25, 1909; station 5417, 

 Albatross; one male. 



Type.— Cat. No. 46173, U.S.N.M. 



Dimensions. — Type male, length of carapace, 28.3 mm.; width 

 of carapace, spines excluded, 32.6 mm.; width, spines included, 

 33.5 mm.; width between outer angles of orbits, 19.2 mm.; width 

 of front, 9.4 mm. 



Carapace very convex from front to back. Only the cardiac, intes- 

 tinal, and posterior gastric regions are defined. Surface pubescent. 

 Postero-lateral margins slightly convergent; antero-lateral margins 

 shorter, armed with three sharp spines, of which the first is smaller 

 than the second and third, which are subequal; the first spine may 

 have an accessory spine on its posterior slope or two or three small 

 spines or spinules outside its base ; the second lateral spine has some- 

 times a very small spinule on its posterior slope. Edge of front 

 beveled, faintly trilobed, granulate. Margin of orbit with sharp 

 granules above, which become larger and spinelike at the outer angle 

 and below; a short and small V-shaped sinus is situated at the middle 

 of the upper margin. 



Subhepatic and pterygostomian regions rough with sharp granules. 

 Lower surface of crab pubescent, with longer hairs bordering the 

 abdomen. Upper-outer surface of chelipeds long-hairy. Merus with 

 a slender curved spine above, and several smaller uneven spines 

 on the lower margins; surface near the margins rough with sharp 

 granules. Exposed surfaces of carpus and manus also rough with 

 sharp granules and small spines, the spines being situated near the 

 inner angle of the wrist and in irregular longitudinal rows on the palm. 

 The inner carpal spine is strong and acuminate and may bear spinules ; 

 near the outer angle there may be one, two, or three small spines. The 

 spines of the palm include a very small one at the superior distal angle. 

 Both fingers have two rough crests on the outer surface; the upper 

 edge of the dactylus is rough with spinules. The brown color of the 

 fingers extends on the outer margins from two-fifths to one-half the 

 length from the tip ; but on the prehensile edges from one-half to the 

 whole length; prehensile edges irregularly toothed, meeting in the 

 smaller cheliped, slightly separated in the larger cheliped; tips cross- 

 ing; basal tooth of larger dactylus of moderate size. 



Ambulatory legs fringed with long hair, merus joints with a small, 

 slender, curved, subdistal spine; the third pair is nearly two and one- 

 fourth times as long as the carapace, its merus is a trifle more than 

 four times as long as wide; carpus and propodus of last pair consid- 

 erably widened. 



