LAOPHONTE. 79 



which are very slender ; the margins of both joints are 

 densely ciliated ; in the male the fifth foot is very small 

 (fig. 12), the basal joint almost obsolete, and bearing 

 only two setaa, one external and one internal ; second 

 joint small and ovate, 4-setose. The first abdominal 

 segment has a pair of bi-setose appendages resembling 

 a rudimentary foot (fig. 14). Length y^th of an inch 

 (85 mm.). 



The anterior antennae of this species vary a good 

 deal in the comparative lengths of the different joints, 

 and sometimes one of the joints is altogether deficient 

 (fig. 3). The outer branch of the first foot is often, 

 if not always, 2-jointed owing to the coalescence of the 

 second and third joints a condition which is met 

 with frequently in other members of the genus. Though 

 not agreeing quite accurately with the figures given in 

 Claus's memoir, this must, I think, be taken as a 

 northern variety of L. similis, Glaus. It is, perhaps, 

 the commonest British species of the genus, occurring 

 from above high-water mark to a depth of several 

 fathoms. Occasionally also it is found in brackish 

 pools, as for instance at Isle Oronsa, Skye (Rev. A. M. 

 Norman), and at Clifden, Co. Galway. The following are 

 the stations from which I have specimens : Amongst 

 weeds in rock-pools, between tide-marks at Sunderland 

 and several places on the Northumberland coast ; Isle 

 of Aran, Clifden, Westport, Roundstone, and Ventry 

 Bay (Ireland) ; Scilly Islands, dredged in fourteen 

 fathoms, and plentiful on weeds between tide-marks. 



