120 CHARLES D. SOAR AND W. WILLIAMSON ON 



The outer row consists of eight smooth, strong spines, the last 

 two being at the distal edge of the segment. The inner row has 

 five spines, and there are also four short pectinate hairs at the 

 distal edge. The palpi range in length from about 1'12 mm. to 

 1-38 mm. 



The anterior edge of the capitulum is moderately arched for- 

 ward. The lateral edges extend into rather long processes. The 

 anterior processes are very strong and broad distally, and extend 

 beyond the posterior edge of the maxillary plate. The pharynx 

 is very broad and moderately contracted in front of the very 

 distinctive pharyngeal ridge. The metapharyngeal region is 

 relatively small, and scarcely extends beyond the distal end of 

 the posterior processes. 



The anterior edge of the first pair of epimera is very slightly 

 sinuate, meeting the almost straight posterior edge at a point. 

 The inner ends of the first and second pairs pass into a long sub- 

 cutaneous process, with its inner edge a little irregular and termin- 

 ating anteriorly in a hook-shaped process. The anterior edge of 

 the third pair is turned up slightly at the end, the posterior edge 

 continuing in a broad curve well beyond the fourth pair. 



In length E. soari may range up to 4*5 mm. At present the 

 male and life-history are unknown. 



E. soari is a fairly widely distributed species. In the British 

 Isles, it has been found at Connemara in Ireland, in England at 

 the Norfolk Broads, Barmouth, Oxshot, Mill Hill and Lowestoft, 

 and in Lincolnshire and Surrey, and in Scotland at Oban. 

 It has also been recorded from Turkestan as well as from 

 Belgium, Switzerland, Italy, Sweden, Russia, Hungary, Austria 

 and Germany. 



Eylais soari * var. instabilis Halb. (PL 3, fig. 2). 



1903. Halbert. Ann. Nat. Hist., Ser. 7, vol. xii. p. 510, figs. 

 4-5. 



This is an Irish variety which in general comes near to E. 

 variabilis Thor, though the capitulum, which measures over all 

 about 0'66 mm., bears some resemblance to that of E. mulleri 

 Koen. 



In general structure the eyes are of a stouter build than E. 



