BY WILLIAM A. IIASWELL, M.A., B.SC. 325 



(EcTicerus arenicola, sp. nov? (PI. XXIV., fig. 3 ) 



Ceplialon slightly produced. Third and fourth segments of tho 

 pleon with an obscure longitudinal ridge in the middle dorsal line. 

 Eyes rather small, round. Superior antennae as long as the 

 ceplialon and the first four segments of the pereion ; peduncle 

 stout; flagellum subequal with the peduncle, of 15 articuli. 

 Inferior antennte about equalling the superior in length ; flagellum 

 and peduncle subequal, the former composed of 14 articuli. 

 Gnathopoda subequal, hairy, larger in the male than in the 

 female, the carpus in both pairs subtriangular, produced at its 

 inferior and distal angle, rather larger in the posterior j)air ; 

 propodos ovate, dactylos rather more than half as long as the 

 propodos ; palm not defined. Two first pairs of pereiopoda 

 f oliaceous, dactylos absent ; third and fourth pairs subequal, 

 similar to the first and second, but with the basos broader, and 

 with a very small, conical dactylos ; fifth pair very long, the distal 

 segments slender, armed with a few short setpe. Posterior 

 pleopoda having the rami narrow, ovate, bordered internally 

 toward the apex with slender hairs. Length 3/10ths in. 



Hob. Shark Island, Port Jackson ; found burrowing in sand 

 above high-water mark. 



Seems to resemble closely the (Edicerus fossor of Stimpson ; and 

 may prove to be identical with that species. 



Grenus Ueothoe, Dana. 

 Urothoe pinguis, sp. nov. (PL XIX., fig. 2.) 

 Body very thick. Eyes small, reniform. Superior antennaa as 

 long as the cephalon and first segment of the pereion ; peduncle 

 very stout, first segment the largest, third very small ; flagellum 

 as long as the peduncle, of fifteen articuli ; appendage two-thirds 

 of the length of the flagellum, composed of ten articuli. Inferior 

 antennso longer than the superior pair ; peduncle very thick, 

 fourth joint the largest, fifth about two-thirds of the length of 

 the fourth and more slender, both fringed below with long hairs ; 



