Mr W. E. Hoi/le on Loligopsis and some other Genera. 329 



two specimens given him by Dr Eeichenbach, and regarded 

 by him as intermediate in their characters between these 

 two species. Probably some uncertainty will always hang 

 over this point, as neither type specimen can be found, and 

 the ultimate criterion of each species is only a somewhat 

 indifferent figure. 



Leachia dubia (Eathke), mihi. 



1833. Perothis dubia, Eathke, Mem. Sav. Etrang. Acad. Sci. St Petersb., 

 t. ii., p. 170. 



This appears to be distinct from Perothis pellucida, but 

 very little is known about it, for Eathke does not figure it as 

 a whole, but merely gives two small drawings representing 

 portions of its anatomy. It would seem, however, to be 

 distinct from Perothis joellucida ( = Leachia cychira). 



DoRATOPSis, de Eochebrune, 1884. 

 Loratojpsis vermicularis (Eiippell), de Eochebrune. 



1844. Loligopsis vermicularis, Riippell, Giorn. Gab. Messina, t. xxvi. {Jide 



Yerany). 

 1851. ,, ,, Verany, Ceph. Medit, p. 123, pi. xl., figs, a, b. 



1884. Doratopsis ,, Eochebr., Monogr. Loligopsidee, p. 20 (12). 



,, Euppelli, Id., Ibid., p. 21 (13). 

 1884. Hyaloteuthis vermicularis, Pfeffer, Ceph. Hamb. Mus., p. 28. 



Dr Pfeffer appears to have been so fortunate as to examine 

 Krohn's original specimen, figured by Verany {loc. city b), and 

 he has given, what naturalists have long waited for, a com- 

 plete description of it. He is not quite right in saying that 

 its " position in the family of the Loligopsidse has never been 

 challenged," for it has long been known that its generic 

 name was quite incorrect ; but no naturalist cared, upon the 

 slender information given by Verany, to found a new genus 

 for its reception, until de Eochebrune did so, just in time to 

 anticipate Dr Pfeffer ; this is, however, to some extent a matter 

 for congratulation, inasmuch as the name Hyaloteuthis had 

 already been used by Gray in a different sense.^ 



It does not seem yet certain that the two forms figured 



1 B. M. C. Moll., p. 63. 



