REPORT ON THE SUHIZOPODA, 51 



peduncle short and thick, inner flagellum very small. Antennal scale not jointed, outer 

 edge serrate. The two (?) anterior pairs of legs ditier slightly from the rest, which 

 are uniform in structure, and true perciopoda. Telsnu prolouged, acuminate. Outer 

 plate of uropoda not jointed at apex. 



Remarks. — The specimen from which the ])reseut genus is estal)lished has 

 unfortunately been lost. But to judge from the drawings of tlic animal made by the late 

 Dr. V. Willemoes-Suhm, it certainly claims to be regarded as the type of a distinct 

 o-enus amonof the Lophogastridge. The generic name Chalarasjv's has, it is true, been 

 also adopted by that author for another very diflerent ^chizoTpod^Chalara.spts 

 tinguictdata ; l)ut as that form has proved to be identical with Dana's Eiicopia audraiis, 

 I have thought fit to retain the generic denomination ]iroposed by Dr. v. WiUemoes- 

 Suhm for the remarkable form here treated of, tlic name being, moreover. ,i most appro- 

 priate one. 



12. Chalaraspis cdata, Willemoes-Suhm MS. (Woodcuts 1. 2). 



Specific Characters. — Form of body rather short and thickset. Carapa(!e without 

 either keels or sculpturing, emarginate behind, wholly covering the two anterior segments 

 of the tail, as also a part of the third segment. Cervical sulcus distinct. Frontal plate 

 abruptly truncate, anterior margin finely serrate. Eyes very small and narrow. Auten- 

 uular peduncle projecting with its two outer joints beyond the frontal plate. Antennal 

 scale not very large, of an oval form, apex rounded. Telson, equalling in length the three 



/ 



n 



Fig. \. —Chalaraspis alatn, Sulim. 



j)receding segments taken together, rather narrow, and tapering towards the apex. 

 Length, 40 mm. 



Remarks. — As above stated, the only specimen obtained by the Challenger Expedition 

 has been lost, and hence T have not myself been enabled to submit the species to a 

 detailed examination. However, the two drawings of this interesting form were for- 

 tunately found among the manusci-ipts of the late Dr. v. Willemoes-Suhm, — the ou<> 



