PAGURUS HYNDMANNI. 183 



tuse tooth at the base, the outer margin delicately and evenly 

 denticulate ; the immoveable finger broad, triangular ; the 

 moveable one carinated, minutely toothed on the outer 

 margin, somewhat contorted in old individuals. The second 

 and third pairs of legs slender, the joints hairy on the 

 anterior edge ; the terminal one curved. 



Total length of the only specimen which could be com- 

 pletely examined, six-tenths of an inch ; another specimen, 

 dried in its shell, is considerably larger. 



This is one of the most interesting and elegant species 

 of this curious genus ; and the perfect condition of one 

 of Mr. Thompson's s])ccimens enables me to give a more 

 satisfactory description of it than of some of the others 

 discovered by him. The form of the hand, the arrange- 

 ment of the parts about the ophthalmic and antennary 

 regions, the unparalleled proportional length of the inter- 

 nal antennse, distinguish it at a glance from every other 

 species. 



It was found inhabiting Turritella terebra at Portaferry 

 by Mr. Thompson, and in Belfast T>ay by Mr. Drummond. 



The fioure is enlarged to two diameters and a half. 



