192 DUBLIN UNIVERSITY 



inner edge; 3rd, triangular and short; 4th, superior border deeply 

 emarginate, lobed ; 5th, at its origin narrow, then suddenly enlarging 

 its sides, becoming parallel. Tige two-jointed, equal in length to the 

 fifth joint of the peduncle, which nearly conceals the basal articulation 

 of tige, which is very short ; terminal articulation conical, terminating 

 in a bristle, and densely hairy. 



Coxae of cephalothoracic rings well developed, and, except that of 

 head, quadrate, the posterior angles directed downwards. Coxa) of ab- 

 dominal rings well developed. Telson triangular, excavate at the side, 

 a shallow pit on its upper surface, the posterior border margined with 

 hairs and tubercles. Posterior pleopods scabrous. Peduncle subrotund, 

 somewhat quadrilateral, sides parallel, the inferior articulation crenu- 

 lated on its margin. Accessory lobe well marked, though small, arising 

 from inferior border of peduncle. Accessory appendage slightly curved, 

 rounded, scarcely attaining to apex of peduncle. Ischium flattened. 

 Trigonal scabrous, equal to peduncle in length. 



», under view. j, leg. 



PI. Hoffmannseggij. 



Colour : dead white, the intestinal band showing through. 



Habitat : nests of ants. 



Localities : Lulworth Cove, Sussex ; Rev. A. E. Hogan. Fountain- 

 bleau ; Paris, M. H. Lucas. 



This interesting animal has much the aspect of a Porcellio ; the cha- 

 racter of the antennae, however, easily distinguishes it generically, as 

 well as the mode of attachment of the false feet of the last pair. 



From Mr. Hogan's description (vide p. 170, ante), its habits appear 

 to resemble those of Porcellio. 



The only detailed description that I can find at all approaching the 



