PAGURUS THOMPSONI. 



a strong tubercle fitting between two smaller ones on the 

 other finger when closed ; wrist about as long as the hand, 

 and equally hairy and spinous, with a row of longer spines 

 along the inner edge. Smaller anterior leg nearly linear, 

 the proportions, clothing, and armature somewhat similar 

 to the larger, but the opposing edges of the fingers with- 

 out tubercles. Third and fourth pairs of feet very long, 

 covered with stiff hairs and small spines ; the last joint 

 armed with a series of strong spines along the inferior 

 edge, and terminated by a sharp nail. 



The general aspect of this species reminds one of P. 

 Prideauxii, the proportions of the parts being somewhat 

 similar ; but it differs not only in some proportional cha- 

 racters, but strikingly in the spinous and hispid clothing 

 of the whole of the legs. It bears in these latter circum- 

 stances some relation to P. Cuanensis, but from this it may 

 be distinguished by the proportions between the wrist and 

 hand, the form of the wrist, the relative proportions of the 

 eye stalks and antennal peduncle, and other characters. 



I have a melancholy gratification in dedicating this 

 species by name to a gentleman who for many years was 

 justly considered as the representative of the Zoology of 

 Ireland, and whose acute discrimination and persevering 

 enthusiasm in his favourite pursuit, were only equalled by 

 the liberal and unselfish feeling with which he placed his 

 treasures in the hands of his fellow labourers, whenever he 

 believed the interests of science would be thereby furthered. 

 The specimen from which the above description is taken, 

 was placed in my hands by my lamented friend only a very 

 few days before his untimely death deprived the science of 

 Ireland of one of its most distinguished ornaments, and 

 society of as kind and true hearted a man as ever lived. 

 Mr. Thompson's note given me with the specimen is as 



