380 CRUSTACEA. 



thick and inflated forms; yet, as in Xanthasia, they may have the de- 

 pressed back of a Hymenosoma. The fossaa of the inner antennas are 

 generally coalescent, and the front very narrow ; but in the genus 

 Pinnotherelia, the front is wide, and the union of it medially with the 

 epistome below, forms a rather wide separation between the anten- 

 nary fossettes. 



GENUS PINNOTHERA. 

 PlNNOTHERA OBESA. 



Carapax plus minusve transversus, interdum suborbicularis, obesus, nudus, 

 nitidus. Maxittipedes externi nudi, articulo tertio transversim insito, 

 marginibus oppositis extus converyentibus. Oculi parvuli. Pedes 

 nudi ; antici mediocres, manu tumidd supra rotundatd, infra non 

 pubescente, digitis crassis, intus pubescentibus, superiore crassiore; 

 pedes postici gracillimi, tarso tenui, infra breviter pubescente, articulo 

 quinto versus apicem vix pubescente. 



Carapax transverse elliptical, obese, naked, shining. Outer maxil- 

 lipecls naked, third joint placed transversely, the opposite margins 

 converging outward. Eyes quite small, and in female, not seen 

 from above. Feet naked, the anterior of moderate size, hand a 

 little compressed, rounded above, not pubescent below, fingers stout, 

 pubescent on the meeting surfaces; posterior legs very slender, 

 tarsus slender, short pubescence below; a few hairs towards apex of 

 fifth joint. 



Plate 24, fig. 3 a, small male, enlarged three diameters; b, c, out- 

 lines of different females, natural size; d, under view of front of fig. a; 

 e, outer maxillipeds of fig. b, enlarged; /, same, more enlarged; g, 

 seta of same ; h, male abdomen ; i, hand, enlarged three diameters. 



Feejee Islands. 



Length of carapax of a female, four and three-fourths lines; breadth, 

 six and one-third lines. Of a male slightly broader than long, the 

 third joint of the fourth pair of legs is two and three-fourths lines 



