212 Messrs. T. and A. Scott o;? some 



not only in material from the locality named, but also from 

 the "Fluke Hole," off St. Monans. Towards the end of 

 June 1892 a quantity of dredged material from the vicinity 

 of Fidra Avas being examined, when a specimen carrying 

 two large ovisacs turned up — the only specimen with ovisacs 

 that has been obtained. The discovery of this specimen 

 set at rest to a great extent some doubts entertained by us 

 regarding the maturity of those previously observed. 



We have named this species in compliment to M. Jules 

 Richard, of Paris, the eminent zoologist and student of tlie 

 Entomostraca. 



Lichomolgus concinnus, Scott. (PI. VII. figs. 12-15.) 



1892. Lichomolgus concinnns, Scott, Tenth Annual Report Fishery 

 Board for Scotland, part iii. p. 261, pi. xi. figs. 25-33. 



This species was described {op. ch.) from a single specimen, 

 a female, obtained in material dredged off St. Monans, Firth 

 of Forth, in the early part of last year. 



Some time ago a specimen of Doris (?) tuherculatus was 

 taken in the neighbourhood of Granton; and while it was 

 being examined several copepod parasites were accidentally 

 observed in the vicinity of the branchial appendages ; the 

 thorax of the copepods was of pale whitish colour, bat they 

 were otherwise nearly transparent and were almost uudistin- 

 guishable from their surroundings. 



A careful examination of some of the specimens showed 

 that the Doris parasite agreed with Lichomolgus concinnus in 

 all respects except that the distal angles of the fifth feet were 

 acute instead of being rounded, and that the abdomen was 

 slightly longer than is shown in the figure in the Fishery 

 Board's Report ; but these differences, which might be due to 

 local causes, are comparatively unimportant. 



No other specimen of the same species of Doris has since 

 been obtained ; we are therefore unable to say whether this 

 Lichomolgus is commonly associated with the Doris or not, 

 but its strongly clawed posterior antennee and foot-jaws seem 

 to indicate that it is at least semiparasitic in its habits, and it 

 would be of some interest to know if it was confined to any 

 particular species of Doris. 



The St. Monans specimen, from which the species was 

 described, may have become detached from some Doris during 

 the operation of dredging. 



