938 Horr & Beaumonr—Survey of Fishing-grounds, W. Coast of Ireland, 1890-91. 
for L. mediterranea, since Sars neither figures this appendage of ZL. sardica nor 
includes a description of it in the diagnosis of the species. 
With regard to the second maxilla L. mediterranea 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 LZ. lingvura. ‘The outer processes 
(fouets) of the second maxille of a specimen examined are somewhat conical, and 
have but few marginal sete. 
The maxillipeds are stated to differ slightly from those of L. mediterranea, 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. Marion, if notably different from that of £. sardica, is 
certainly distinguishable from that of Z. imgvura in no important particular. 
The spinulation of the telson in LZ. Marion is undoubtedly different from that 
which typically obtains in LZ. 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 LZ. sardica four) 
smaller ones. In L. Marion there are eight small median spines, of which the two 
most central are rather larger than the rest. Lateral to these on either hand 
are two large spines separated by seven smaller ones. ‘The difference in size 
between the larger and smaller spines is much greater in LZ. 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 spinules in LZ. Marioni than in L. lingvura. 
The analogy of other forms, notably Striella 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. JL. Marioni 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 spinules on the terminal portion of the telson. 
Sub-family.—Mysinz. 
Genus Hemimysis, G. O. Sars. 
Hemimysis Lamornee (Couch). 
Not in the Survey Collection. 
Marine Laboratory.—Blacksod Bay, 6—8 fathoms, 29th March, 1899. Two 
specimens, pigment bright red. 
No Previous Irish Record. 
