HYDEACARINA : THE GENUS EYLAIS LATR. 119 



The eye plate is large and appears to be subject to considerable 

 variation. The middle of the anterior margin of the intercapsular 

 bridge is drawn out into a narrow irregularly shaped process for 

 muscle attachment. The posterior emargination is broad and 

 deep, and extends nearly as far as the middle of the first pair of 

 eyes. The outer margins of the eye capsules are sinuate, the 

 inner margins more weakly so, while the inner anterior corners 

 are slightly angular. 



The palpi have the second segment with nine or ten strong 

 spines on the distal inner margin. Some of these are pectinate. 

 The distal flexor surface of the third segment is only slightly 

 developed, and has about eighteen long spines. The proximal 

 half of the inner surface of the fourth segment has about twenty 

 long spines, and at the distal end there is a row of pectinate 

 spines. The proximal outer surface has seven long bristles. The 

 distal end of the fifth segment has eight or nine short and stout 

 blunt claws. 



The capitulum is deeply emarginate distally, the lateral pro- 

 cesses being directed outward and downward. The pharynx is 

 relatively narrow and the pharyngeal ridge sinuate. 



Eylais soari Piers. (PI. 3, fig. 1). 

 1899. Piersig. Zool. Anz., vol. xxii. p. 67, fig. 8. 



The eye capsules of this species are united by a moderately 

 long and broad bridge, the anterior margin of which has a deep 

 median bay, which terminates at each end in a rounded process. 

 Each process extends forward almost as far as the anterior edge 

 of the capsules, and has a long hair springing from its centre. 

 The process for muscle attachment is in the form of a rounded 

 boss, sometimes accompanied by a pair of finger-like processes. 

 The capsules are variable in outline and range from a long reniform 

 shape to a shorter or almost round one. From the outer edge 

 of one capsule to the outer edge of another, a breadth of about 

 0*4 mm. may be attained. 



The distal end of the flexor surface of the third segment of the 

 palpi is not very prominent. It is furnished with thirteen to 

 fifteen strong but not very distinctly pectinate spines. On the 

 flexor surface of the fourth segment there are two rows of spines. 



