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Page 61. Add another species: 



Orchomene Hanseni, Meinert. 



(Suppl. PI. Ill, fig. 2). 



Orchomenp Hanseni, Meinert, Crustacea malacostraca ; Det vidensk. Udbytte af Knnonbaaden 



Hauchs Togter, p. 154, PI. 1. figs 1822. 



Syn. ? An onyx melanophthalmus, Norman. 



Female. Body rather short and stout, with broadly rounded back. 

 Cephalon with the lateral corners somewhat projecting and narrowly rounded 

 at the tip. Anterior pairs of coxal plates about twice as deep as the corre- 

 sponding segments; 1st pair slightly concave anteriorly and nearly trans- 

 versely truncated at the tip, with the posterior corner rectangular; 5th pair 

 a little broader than they are deep. Last pair of epimeral plates of meta- 

 somc having the lateral corners somewhat projecting and narrowly rounded 

 at the tip, posterior edge perfectly smooth. First segment of urosome with 

 a slight depression dorsally. Eyes unusually large, oblong oval in form, 

 somewhat widening below, pigment very dark, almost black, visual elements 

 well developed and very numerous. Superior antennse comparatively short 

 and stout, with the flagellmn about as long as the peduncle and composed of 

 8 articulations, the 1st of which is shorter than the others combined , acces- 

 sory appendage half the length of the flagellum and 5-articulate. Inferior 

 antennae scarcely longer than the superior and much more slender. Epistomal 

 plate narrowly rounded and less projecting than in 0. Batei. Gnathopoda 

 nearly of same structure as in that species, except that the propodog of the 

 posterior ones is less coarsely hirsute anteriorly. Pereiopoda likewise of a 

 very similar shape. Last pair of uropoda with the inner ramus much shorter 

 than the outer and simple mucroniform, the latter with 2 spines on the outer 

 edge and one on each side of the small, spiniform terminal joint. Telson 

 somewhat longer than it is broad, and but slightly tapering distally, with 

 only a single pair of subdorsal denticles, cleft very short and angular, termi- 

 nal lobes each tipped by a slender spine. Colour uniformly whitish, without 

 any pigmentary ornament. Length of adult female 7 mm. 



Remarks. The present species, established by Prof. Meinert, is very 

 nearly allied to 0. Batei, but is apparently distinct, chiefly differing in the 

 unusual size and dark pigmentation of the eyes, as also in the somewhat different 

 shape of the last pair of epimeral plates of the metasome. It is very pro- 

 bable, that the Anonyx melanoptlialmus of Norman, which I formerly identified 

 interrogatively with 0. Batei, may in reality turn out to be this species. In 



90 Crustacea. 



