28 ON ENTOMOSTRACA COLLECTED IN THE SOLWAY DISTRICT 



what dilated, and more than equal in length to the two follow- 

 ing joints, bearing one long seta near the middle of its inner 

 margin, and several short ones on its basal half; second joint 

 rather shorter than the third and prorided with a small seta on 

 the inner margin, third joint bearing three apical setse, the 

 innermost being the shortest; outer margin of all the joints 

 fringed with minute setse ; outer branch composed of three 

 nearly equal joints, which united equal in length the first joint 

 of the inner branch; each joint is ciliated externally and also 

 bears a spine-like apical seta, in addition to which the last joint 

 has three apical setse which are progressively longer from with- 

 out inwards; the second pair of feet have the outer branch 

 similar to that of the first foot but larger, and its second and 

 third joints have each a seta on the inner magin ; inner branch 

 two-jointed, short ; second joint twice as long as the first, bear- 

 ing two marginal and three apical setae and ciliated, as also is 

 the first joint, on the outer margin. The third and fourth pairs 

 do not differ- materially from the second. Fifth pair foliaceous ; 

 the basal joint produced internally and reaching as least as far 

 as the apex of the second joint, fringed with six principal ciliated 

 setse and a few more minute ones ; the second joint, which is 

 subquadrate also, bears six setse-^ one much larger than the rest 

 — some of which are shortly plumose. Length 1*3 mm. 



Male. — The antennule of the male is swollen, geniculated, 

 and falcate at the apex : the third swimming foot has the outer 

 branch very stout and geniculated at the distal joint so that the 

 extremity can be bent inwards; the last joint bears four stout 

 marginal spines, the first and second joints each one strong 

 spine and several smaller ones ; inner branch three-jointed, 

 short; first and second joints furnished with one, the third 

 with two short setse ; fifth foot small, the basal joint bearing 

 three short, stout, spine-like setse on its inner segment, and two 

 setse externally, apical joint small and bearing four small unequal 

 setse. 



Hah. — In a small pool above high-water mark at Rockcliffe, 

 Kirkcudbrightshire : specimens numerous. 



