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m?'] PROCEEDINGS OF THE NATIONAL MUtiEUM. 227 



Erileptus spinosus. 



Oaia]>:iC(' s])iiioiis; two spines on tlic- mediiin liiu', one, on the pos- 

 terior pjirt of (he f;;istiie rejj;ion, and the other on the eardiae region; 

 there is one Un\'^ spine on the braneliial )'ej;ion, witli a snnill one iu 

 front of it and two on the nnir^in; a. s[tin<^ on the inarj;in of the hepa- 

 tic region, and two very small ones ariant^rd transxcrsely on tiie gas 

 trie region; there is a slender spine on (lie orbital aieh. Ijiostium 

 slenchu', spinnlons on the. margins, aJxmt one half the length of the 

 post frontal portion of the caiapace, PiKstorhital s])ine small, at some 

 distance behind the eye. The ab<lomen bears a si)ine on the first seg- 

 inent. (Jhellpeds nearly three times as long as the«;arai)a(H', granulate; 

 merns one-spined above at the anterior margin; hand slender, slightly 

 flattened vertically, increasing in width towaid the distal end; dactyl 

 and pollex arched, gaping for one-half their length. Ambulatory legs 

 decreasing regularly in length from the tirst to the fourth; fourth pair 

 a little more than one half the length of the (irst. 



This species in the arrangement of its spines and in the rostrum re- 

 sembles AiKtKiiinis rostrattis, but the carapace is much broader pos- 

 teriorly, the legs aie different in character, and the postorbital spine 

 is small and remote from the eye, while in An<(siiiiu,s it is distinct and 

 defines the orbit. 



Length 10, width (I millimeters; length ofcheliped about liH. 



Otf ISan Diego, California, lat 32"^ IHV :W N., hmg. 117^ 10' W., Mi 

 fathoms, gray sand, tenii»erature 58.13"^, station 2934, IJ. S. Fish Com- 

 mission steamer Albatross, 1881); two males (17341). 



Aiiasiniiis rostratus. 



Carapace with twoinedian spines, one of which is on the posterior 

 part of the gastiic region and one on the (;ardiac region. There are 

 two si)ines on each branchial region, and almost in line with these, one on 

 each protogastri(; lobe. Lateial margins spinulous. Surface ])ubes- 

 cent. Kostrnm slender, spinulous on tlu; margins, cur\ ing upwards 

 for its distal half. There is a- piominent supraoibital spine. The tirst 

 article of the female abdomen carries a si)ine; the second article, one 

 much snniller. IJasal aiitennal Joiid. very long and nariow, terminating 

 in ai spine, si)innlous on the margins, witlnait a ))rominent tubercle. 

 Chelipe«ls very weak in the female; margins of merus si>inulous; a 

 slendei- sjjine above near the carpus; hand granulous; lingers nearly 

 as long as ]»alm, in contact. Ambulat<ny legs slender, much shorter 

 than in J'i((/<u; i)ubescent, decreasing in length but little from the first 

 to the fourth pair; dactyls s])inul<Mis below. 



This s]»eeies is distinguishable from A. fugnjc, A. Milne Edwards, of 

 the Antilles, by the fewer spines on the carapace, by the more slender 

 rostrum, and the shorter ambulatory legs, 



Length, 7,;"); width, 5 milliuieters, 



