540 BULLETIN 129_, UNITED STATES NATIONAL MUSEUM 



Description. — Similar to typicus. Carapace wider, one-sixth wider 

 than long; elevations lower; anterior slope of cardiac elevation granu- 

 lated, its borders not sharply defined; tooth at end of branchial 

 ridge minute; a still smaller and inconspicuous tooth on postero- 

 lateral margin half way between branchial ridge and posterior 

 margin; median gastric area, or anterior slope of gastric elevation 

 narrower than in typicus; margin very finely granulate, no teeth at 

 widest part except one at lateral angle. Chelipeds shorter than in 

 typicus; chelae hairy especially on upper margin; merus with upper 

 surface widening less toward distal end, a few tubercles near margins 

 as in typicus, marginal crenulated teeth less projecting than in 

 typicus; manus armed above with 10 teeth almost hidden in hair, 

 the distal tooth and 2 proximal teeth very small; just below is a 

 row of 10 large granulated tubercles; outer and inner margins tuber- 

 culated, the outer margin with 12, the inner with 13 tubercles; next 

 to each margin a row of similar tubercles; immovable finger very 

 short; dactylus vertical. Lower border of merus of last three am- 

 bulatory legs irregularly^ denticulate; a small, denticulated lobe 

 near proximal end in second and third pairs, and a denticulated 

 lamina at middle in third pair. The transverse line of tubercles on 

 the sternum, either side of abdomen, at base of chelipeds is more 

 transverse than in typicus and is situated further from the tip of the 

 abdominal cavity; there are no tubercles in the middle of the first 

 sternal segment, as in typicus. 



Measurements. — Male, holotype, length of carapace 7.3, width of 

 same 8.5, length of cheliped 17 mm. 



Type-locality. — Mayaguez Harbor, Porto Rico: Point del Algar- 

 robo, E., 2% miles; 75 to 76 fathoms; rky. S. Co.; temp. 68.5° F.; 

 January 20, 1899; station 6063, Fish Hawk; 1 male, holotype (24237). 



SOLENOLAMBRUS DECEMSPINOSUS Rathbun 



Plate 194, figs. 1 and 2 



Solenolambrus decemspinosus Rathbun, Proc. U. S. Nat. Mus., vol. 17, 

 March 30, 1894,|:advance sheet, p. 2; Julj^, 1894, p. 84 (type-locality, 

 Gulf of Mexico, lat. 28° 44' N., long. 85°16' W., 60 fathoms; holotvpe, 

 Cat. No. 18157, U.S.N.M.). 



Diagnosis. — Sixfspines on posterior and postero-lateral margins. 

 A second spinefon branchial ridge. Two tall spines on median line. 

 On outer and lower|surfaces of palm a row of large granulated tuber- 

 cles parallel to'f eachfmargin ; outer and inner margins tuberculated; 

 dactylus nearly|at|right angles with palm. Cheliped twice as long 

 as carapace. 



Description. — Closely|allied to S. typicus. Antero-lateral margin 

 convex; arealbetween the two anterior gastric ridges narrower than 

 in S. typicus ;fga.stTic and cardiac prominences terminating in slender 



