84 BULLETIN 129, UNITED STATES NATIONAL MUSEUM 



Description. — Distinouished by the remarkably reflexed rostrum 

 of the male, which is bent upward at an angle of nearly 45° to the 

 front, with the spines laterally divergent toward their apices. Body 

 and limbs thinly pubescent, carapace narrow in proportion to its 

 length, with the spines disposed as commonly in specimens of E. 

 latreillii of the same size and sex, as, for instance, two upon the 

 gastric, one upon the cardiac, one on each branchial region and one 

 on the posterior margin, besides some smaller granules on the sides- 

 of the hepatic and branchial regions. There is a small spine on the 

 upper margin of the orbit; also a postocular spine. The spines of 

 the rostrum considerably exceed half the length of the carapace,^^ 

 the spines are contiguous at the base, but in the distal third of their 

 length they curve laterally and outward ; there is a strong spine on 

 the interantennular septum. Eyes, antennae, and maxillipeds of 

 same form as in E. latreillii. The chelipeds havC;,, as in the young 

 males of that species, the palms not turgid but compressed, the 

 fingers acute, without teeth, and without any intramarginal hiatus 

 when closed; the merus and carpus have a few distant granules on 

 their upper margins. The ambulatory legs of the single male are 

 very imperfect, but they were evidently slender and considerably 

 elongated, with the penultimate articles a little larger than the 

 preceding and very little dilated. 



An immature female from the same locality has the rostrum 

 scarcely at all reflexed and somewhat shorter, with the spines less 

 divaricate at the apex; the chelipeds and legs clothed with a denser 

 pubescence; the latter much less elongated. This specimen, though 

 distinguished by the narrower carapace and more elongated rostrum, 

 much more nearly resembles t^^ical E. latreillii than does the male.^* 

 (Miers.) 



Measurements. — Length of carapace to base of rostrum, about 19; 

 length of rostrum about 11; width of carapace a little over 15, length 

 of cheliped nearly 32 mm. (Miers.) 



Range. — Knowil only from the type-locality, inland waters of 

 western Patagonia (or Magallanes Territory, Chile) , off northeastern 

 end of Madre Island, Wide Channel, lat. 50° 08' 30" S., long. 74° 

 41' 00" W., 175 fathoms, blue mud, January 5, 1876, station 308, 

 Challenger] 1 male (type), 1 female (Brit. Mus.). 



Genus EUCINETOPS Stimpson 



Eucinetops Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 191 

 [63]; type, E. lucasii Stimpson. — A. Milne Edwards, Crust. R6g. Max., 

 1875, p. 119. — Miers, Journ. Linn. Soc. London, vol. 14, 1879, p. 644. — 

 Rathbun, Bull. U. S. Fish Coram., vol. 20, for 1900, pt. 2 (1901), p. 55. 



Carapace oblong. Rostrum small, bifid, little deflexed. Eyes 

 very long, reaching much beyond the margins of the carapace. 



» This is not borne out by Miers's fig. 1, pi. 5. 



