62 ME. E. J. MIEES ON THE IDOTEID^. 



longitudinally carinated in tlie middle line ; the epimera very 

 prominently and distinctly angulated, and tlie terminal segment 

 rounded on the sides, but produced and acuminated at the distal 

 end. 



There are in the British-Museum collection two specimens 

 from Tripoli. 



In the Paris collection I have examined five examples from 

 Bona and one from near La Calle (M. Lucas) ; also one found 

 amid Algerian specimens of I. hectica (Lucas), in which the tip 

 of the terminal segment has been broken ofi". 



Eisso apparently figures a specimen of this variety under the 

 name of appendiculata ; therefore his name is retained for it. 



InoTEA ACtJMTKATA, var. LANCiEEB, Leucli (inecl). 



This variety is distinguished by the form of the terminal post- 

 abdominal segment, which is widest at a point distant about two 

 thirds from the base, after which it is suddenly contracted, the 

 terminal portion or cusp beiug narrow-linear and produced. The 

 body is carinated, as in var. appendiculata, but the epimera are 

 less distinctly angulated. 



The only specimens I have seen presenting these characters 

 are two males and a younger example from Devon, Sidmouth 

 (Dr. Leach), designated I. lancifer by Leach and I. appendicii,lata 

 by White, and a female from Ilfracombe (Mr. Grosse) in the British 

 Museum; but a considerable approach to them exists in the variety 

 designated I. lanciformis by Eisso. 



This variety is figured by White, S, Bate and Westwood {loc. 

 cit.) as Idotea appendiculata. 



Idotea steicta. 



Idotea stricta, Dana, U.S. Bxpl. Exp. xiv. Cr. ii. p* '704, pi. xlvi. fig. 7 

 (1853); S. Bate, in Lord's Naturalist in Brit, Columbia, ii. jJ' 282 

 (1866)? 



This species is described by Prof. Dana as narrow, with the 

 front excavate ; head a little transverse. The surface is not dis- 

 tinctly granulate. Postabdomen uniarticulate, longer than half 

 the cephalothorax, narrow-oblong (length more than twice the 

 breadth), with a suture on each side near the base ; lateral 

 margins a little excavate or concavej extremely triangulate or sub- 

 acute. Antennules scarcely reaching to the penultimate joint of 



