332 Surg.-Capt. A. Alcock on 



hairy squames an-anged in transverse series ; its greatest 

 breadth is about six sevenths of its length. The rostrum, 

 the lengtli of which is about two fifths that of the carapace, 

 is broad, being at its base nearly one third the breadth of the 

 carapace, triangular, and strongly carinated, and upcurved 

 and seiTated at tip ; the frontal border is in the same convex 

 curve with the anterior portion of the lateral borders, it bears 

 on each side two strong spines, and there is also a strong 

 antero-lateral spine, and the lateral borders are armed in 

 addition with three or two spinules ; the posterior border is 

 raised and quite smooth ; the gastric and cardiac regions are 

 well defined, the former having a pair of spines on the middle 

 line in front. 



The abdominal terga and pleurse are squamous and hairy, 

 but are not spinate ; the second, third, and fourth terga are 

 grooved transversely. 



The eye-stalks, which are short and stout, are united with 

 one another at base and are almost immobile, each is prolonged 

 beyond the cornea into a stout spine, which projects obliquely 

 from beneath the base of the rostrum, to which, at first sight, 

 it appears to belong. 



The basal joint of the antennulary peduncles is stout, but 

 not inflated ; of the two external terminal spines only one — 

 the lower — is large and conspicuous. 



The antennary flagellum is three times as long as the 

 cheliped. 



The external maxillipeds are short and slender, the ischium 

 having the inner border finely ctenate and the meropodite 

 having the lower border irregularly crenulate. 



Tiie thoracic legs are granular, or squamous, or spinulate, 

 and moderately hairy. 



The chelipeds are shorter and not very much stouter than 

 the second, third, and fourth legs, their length being con- 

 siderably less than half that of the body (with the rostrum) j 

 in the male they arc slightly asymmetrical ; the meropodite 

 and carpus have each a terminal ring of spinelets, and the 

 fingers, which are longer than the inflated palm, are coarse, 

 and are excavated en cuillh-e at tip, being closely crenulate 

 round both edges of the spoon-shaped tips, but not toothed in 

 the proximal half. 



The second, third, and fourth thoracic logs have the joints 

 remarkably prismatic and the carpus and propodite strongly 

 fluted ; in all the anterior border of the meropodite and carpo- 

 podite is spinate, and the teeth on the posterior border of the 

 long dactylopodite arc small. 



