276 



Messrs. J. Wood-Mason and A. Alcock on 



Edw.) also is without branchiostegal spines, and, moreover, 

 has the telson simple and unarmed. 



The branchial formula is the same in both species, 

 namely : — 



Somites and 



Arthrobranchiae. 



Paiiasolenocera, gen. 



nov. 



Carapace grooved as in Solenocera^ furnished with supra- 

 orbital, postorbital, and hepatic spines ; without post-rostral 

 ridge. Abdomen narrow and elongated, with a consi)icuou3 

 hump, giving to the body a decided wasp-waisted appear- 

 ance, dorsally carinated from the base of the third tergum to 

 the apex of the last — the carina very distinctly and in- 

 creasingly cristiform from the base of the fourth to the apex 

 of the last, where it ends in a sharp decurved spine. Telson 

 trifurcate, as long as the swimmcrets, Flagella of antennules 

 foliaceously expanded, tapering gradually to a very tine seta- 

 ceous point, the inner much the broader and a little the 

 longer, ensheatliing the outer. 



This genus forms a connecting-link between Solenocera on 

 the one hand and HijmenopenceuSj F/u'lonicus, and Ilaliporus 

 on the other. 



9. Parasolenocera annecttns^ sp. n. 



The strongly ascendant and very slightly upcurved rostrum 

 is regularly and rather gradually produced to a very sharp 

 ])oint, which reaches almost to the end of the penultimate 

 joint of the antennulary peduncle. It is armed with a 

 decreasing series of eight excessively acute teeth, the first of 

 which is placed on the gastric region and about as distant 

 from the second as this is from the fourth of the series. 



The first branchiostegal spine whrn viewcil from the side 

 presents itself as a stout, compressed, acute, trianguh\r pro- 



