238 Holt & Bkaumont — Snrvri/ of Fishinri-groumls, W. Coast of Ireland, 1890-91. 



for L. mediterranean since Sars neither figures this appendage of L. sardica nor 

 includes a description of it in the diagnosis of the species. 



"With regard to the second maxilla L. mediierranea is the species selected for 

 comparison. The differences noted as distinguishing L. Marioni are less strongly 

 marked, as far as Gourret's figure appears from the whole context to be reliable, 

 when the last-named species is compared with L. lingvura. The outer processes 

 (fouets) of the second maxillte of a specimen examined are somewhat conical, and 

 have but few marginal set^e. 



The maxillipeds are stated to differ slightly from those of L. mediterranean but 

 in the case of the second pair such difference appears only to bring them more 

 into conformity with L. lingvura. 



The inner uropod of L. Ilarioni, if notably different from that of L. sardica, is 

 certainly distinguishable from that of L. lingvura in no important particular. 



The spinulatlon of the telson in L. 3Iarioni is undoubtedly different from that 

 which typically obtains in L. lingvura. In the latter there are two (in L. sardica 

 three) small median spines, bordered by a large spine on each side. Each large 

 spine is separated laterally from another large spine by three (in L. sardica four) 

 smaller ones. In L. 3Iarioni there are eight small median spines, of which the two 

 most central are rather larger than the rest. Lateral to these on cither hand 

 are two large spines separated by seven smaller ones. The difference in size 

 between the larger and smaller spines is much greater in L. Marioni than In 

 L. lingvura; and the distinction between the two forms in this particular is, in 

 effect, that the four large spines of the extremity of the telson are separated by 

 more numerous and smaller spinulcs in L. 3Iarioni than in L. lingvura. 



The analogy of other forms, notably Siriella armata, inclines us to distrust 

 most strongly the specific value of such a distinction, based on the examination 

 of an unknown and possibly small number of examples ; the more especially 

 since the supposed differences in other parts appear altogether trivial, not to say 

 illusory. L. 31arioni may therefore be relegated, for the present, to the synonymy 

 of L. lingvura, or may, at most, be held to be a race of the latter characterised 

 by difference of the number of splnules on the terminal portion of the telson. 



Sub-family. — Mysin.e. 



Genus Hemimysis, G. 0. Sars. 



Hemimysis Laniornee (Couch). 



Not in the Surveg Collection. 



Marine Lahoratory. — Blacksod Bay, C-8 fathoms, 29th March, 1899. Two 

 specimens, pigment bright red. 

 iVo Previous Irish Uccord. 



