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 specimens 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 antennae, distinguish it at a glance from every other 

 species. 



It was found inhabiting Turritella terebra at Portaferry 

 by Mr. Thompson, and in Belfast Bay by Mr. Drummond. 



The figure is enlarged to two diameters and a half. 



