CRUSTACEA WHITELEGGE. 149 



Tribe ISOPODA. 



ClROLANA LATYSTYLIS, Dana. 



Cirolana latystylis, Dana, Crust. U.S. Explor. Exped., ii., p. 772, 

 pi. li., fig. 6. 



Twelve examples of this rare species were obtained on spongrs 

 in sandy pools. 



Tribe EPICARIDEA. 



ATHELGUE ANICULI, sp. nov. 



(Plate vii., fig. 5, a, b, c.) 



Body oval, twice as long as broad, slightly transversely convex 

 above and depressed below. 



Upper antennae short, with two exposed joints and a short 

 flagellum, surmounted by a pencil of setae, the last joint equal in 

 length to the third joint of the outer antennae ; the latter with 

 four joints, the first short, broad and boss-like, the second stout, 

 elongate and equal to the last, which is rather slender, third 

 joint a little longer than broad, the flagellum is slightly longer 

 than the breadth of the last joint and ends in a tuft of hairs. 



Immediately posterior to the upper antennae is situated a 

 transverse lip-like process (the frontal edge of the cephalon) 

 which extends to between the bases of the second antenna? and 

 of the first pair of legs. Eyes not discernible. 



The cephalic shield is separated from the frontal margin by a 

 slight groove, its anterior edge is almost straight, the antero- 

 lateral angles are oblique and in contact with the bases of the 

 first pair of legs, the posterior margin is evenly rounded. 



The segments of the peraeon are rather indistinct ventrally, 

 but well marked dorsally, the first segment scarcely visible behind 

 and almost in contact with the cephalic shield, the second much 

 longer than the first, the third and fourth equal ; fifth and sixth 

 a little longer and broader than the preceding pair, seventh equal 

 in length but considerably narrower than the sixth. 



On the posterior margins of each segment there are a pair of 

 flat triangular teeth, directed towards the pleon, they form two 

 longitudinal rows, and are situated nearer the bases of the legs 

 than the median line of the body, the first and last pairs are 

 small, the intermediate pairs subequal. 



The legs are curved over towards the dorsal surface, and 

 excepting the first pair are equal in length, the first five are 

 equidistant, a rather wide space exists between the fifth and 

 sixth. The short basal joints are tumid, and have a short lobe 

 which is acute in the last three pairs, second joints of the fifth, 



