NO. 2135. NEW FHILIPriNE CRABS— RATIIBUN. 541 



postocular islet, which is subcircuhir with a notch in the inner mar- 

 gin ; one lunate preorbital islet ; an elongate islet on the siibbranchial 

 and on the subhepatic region. 



Chelipeds of female stouter than ambulatory legs and as long as 

 carapace; upper margin of merus and manus subparallel; fingers 

 narroAvly gaping. First ambulatory leg exceeding cheliped by half 

 the length of dactylus; legs cylindrical. 



Differs from all other species by the pattern on the carapace and 

 the short rostrum. 



SPHENOCARCINUS NOD03US, new species. 



Ti/pe-locality. — Between Xegros and Si(|uijor: Apo Island (C), 

 S. 26° W., 11.8 miles; lat. 9° 15' 45" N.; long. 123° 22' 00" E.; 270 

 fathoms; gn. M. ; temperature 53.5° F.; Aug. 19, 1909; station 553G, 

 Albatross. 



Eoloti/pe.—Ua\e. Cat. No. 48212, U.S.N.M. 



Measurements. — Length of carapace in median line, 22 ; length of 

 rostral horns, 4.3; width of carapace exclusive of tubercles, 1G.2; 

 same, inclusive of tubercles, 18.5. 



Carapace ovate-triangular, densely covered with a coating of acute 

 hairs, and ornamented with round knobs or tubercles of wdiich there 

 are eight of large size and seven of small size ; the large ones are as 

 follows : Four in a short cross in the middle of the carapace, of wdiich 

 two are median, gastric and cardiac respectively, and two are anterior 

 branchial; a larger tubercle at the outer angle of each branchial 

 region, and, largest of all, an oblong, nearly vertical excrescence 

 nearly covering the hepatic region. The pubescence is shorter on 

 the two lateral tubercles. The small tubercles are as follows: Two 

 lateral gastric; two on each branchial region, one close in front of 

 the large tubercle, one on each side of the cardiac region; and one 

 intestinal. On the subbranchial region there is a suberect, semioval, 

 laminar lobe or excrescence, wdth a narrow white edge. A similar, 

 but smaller, narrow, right-angled area is on the pterygostomian 

 region. Preorbital hood very oblique and terminating anteriorl}^ in 

 an acute angle; it is separated by a small U-shaped sinus from the 

 postocular cup which is well-developed, especially below. Basal 

 antennal segment narrow, curved, diminishing distally, unarmed. 

 Eostral horns horizontal, with outer margins parallel, interspace 

 V-shaped. 



Chelipeds long and massive, two-thirds again as long as carapace; 

 margins of three-sided merus blunt, unarmed ; carpus with two blunt 

 crests above and a tooth on the proximal half of inner margin; 

 manus narrowing distally, Avith margins proximally thin; fingers 

 dentate, with a large tooth at base of dactylus, a wide gape in basal 



