EUDACTYLINA INSOLENS. 137 



of the first joint strongly chitinized. The third pair 

 of feet with the branches of nearly equal length and 

 both branches three- join ted. The fourth pair of feet 

 with a three- jointed outer branch and a two- jointed 

 inner branch. The first joint of the outer branch large 

 and swollen. The second and third joints short and of 

 nearly equal length. The inner branch about half the 

 length of the outer one and its two joints of nearly 

 equal length. The fifth pair large and foliaceons and 

 similar to those of Eudactylina minuta, except that 

 there are no spinules on the surface. 



Habitat. — Four specimens, all females, were found 

 on the gill filaments of a male tope, Galeorhinus 

 galeus, captured in the vicinity of King William Bank, 

 off the north of the Isle of Man, Irish Sea, April 

 1912. The topes from which Eudactylina insolens and 

 Kroyeria fiineata were obtained, were caught in the 

 trawl of the Lancashire and Western Sea Fisheries 

 steamer, and landed at Piel, Barrow-in-Furness, along 

 with other material, by Captain Wignall. 



We were inclined at first to regard this Eudactylina as a 

 form of Eudactylina acanihii, but a close examination showed 

 that there were decided differences. The strong uncinate 

 appearance of the long outer branch of the second pair of 

 feet can be easily seen by examining the entire animal when 

 lying on its side. That character, along with the differences in 

 the structure of the first, third, and fourth pairs of feet, readily 

 separate Eudactylina insolens from Eudactylina acanthii or 

 any of the other members of the genus. The incomplete 

 segmentation of the thorax, which gives the species only three 

 free segments instead of four, may be abnormal and due to 

 uncompleted development, but as the whole of the appendages 

 appear quite normal we prefer in the meantime, in the 

 absence of further material, to regard the form as distinct. 



Family iv. Phiijchthyid/E. 



Female. — Body elongated, more or less segmented 

 but without articulated locomotive appendages. Fre- 

 quently furnished with lateral processes, which may 



