302 BULLETIN 129^ UNITED STATES NATIONAL MUSEUM 



nate; the other marginal spine is at the posterior end of the segment 

 and is much smaller but also sliarp. The lower margin of the orbit 

 is more advanced than the upper and is transverse and slightly- 

 sinuous. 



The three long margins of the merus of the cheliped are armed 

 with spines; the carpus bears six spines (visible to the naked eye), 

 arranged in two longitudinal series; a similar spine surmounts the 

 condyle of the palm which articulates with the wrist. 



Color.— Fink, hairs brown; legs whitish with pink rings or bands. 



Measurements. — Type male (Bell), length 20.3 mm. (8 lines), 

 width 15.2 mm. (6 lines). Male (1895, M. C. Z.), length to tip of 

 horns 14.7, width 10.3 mm. 



Range. — Galapagos Islands, to 6 fathoms. 



Material examined. — James Island, Galapagos Archipelago; Hassler 

 Exped.; 1 male (1895, M. C. Z.). 



HERBSTIA PUBESCENS Stimpson 



Herbstia pubescens Stimpson, Ann. Lye. Nat. Hist. N. Y., vol. 10, 1871, p. 

 92 (tj'pe-locality, Manzanillo, Mexico; liolotype not extant). 



Diagnosis. — Merus of ambulatory legs unarmed. Lateral spines 

 more than four. A transverse gastro-cardiac ridge. 



Description. — ^Body covered with a dense, short pubescence, be- 

 neath which the carapace is smooth and unarmed, except at the sides, 

 where there are a few minute spines. There are two inconspicuous 

 tubercles in the median line on the gastric region, and a short, trans- 

 verse, tuberculiform ridge between the gastric and the cardiac region, 

 which latter is somewhat prominent. There is a single small triangu- 

 lar tubercle at the posterior extremity on the intestinal region. 

 Rostrum very short. Chelipeds Avith merus and carpus armed with 

 spiniform tubercles; hand smooth, unarmed. Ambulatory legs un- 

 armed, pubescent; dactyli very short. 



Differs from H. pyriformis in its shorter rostrum, and in the spines 

 of the lateral margins of the carapace which are smaller and more 

 numerous. (Stimpson.) 



Measurements. — Female holotype, length of carapace 21.6 mm. 

 (0.85 inch), width 17 mm. (0.67 inch). 



Range. — Manzanillo, Mexico. Known only from the type-speci- 

 men. 



