400 Dr. J. G. de Man 



on 



innermost, forming a frin^^c on tlic inner maro;in of the 

 latter ; a fringe of stunt hairs occupying the middle third of 

 the onter marijin of the orjjan. 

 Dimensions. — 



mm. 



I.enpth of capitiilutn 12 



Breadth „ 10 



Length of aperture 4 



„ peduncle 7 



LocaUty.—O^ the S.W. coast of India, 185 fath. On 

 shell of living Xenophora ; four specimens. 



A. xenophora resembles A. quadrata, Aur., in some 

 respects, but maybe distinguished externally by its feebly pro- 

 tuberant, non-tubular aperture and subtriangnlar capitulum. 

 The appendages and mouth-parts differ considerably from 

 those of the Californian species, the structure of the fifth and 

 sixth cirri in particular being characteristic. 



LIV. — Diagnoses of Five new Species of Decapod Crustacea 

 and of the hitherto unknown Male of Spirontocaris recti- 

 rostris {Stimps.) from the Inland Sea of Japan, as also of 

 a new Species of Palasmon from Darjeeling, Bengal. By 

 Dr. J. G. DE Man, of lerseke, Holland. 



OxcoDOLAMBRUs, subgen. nov.* 



A new subgenus of Lamhrua, Leach. Carapace broadly 

 triangular, once and a half as broad as long. Rostrum acute, 

 pr( jf'cting and strongly deflexed. No postocular constriction. 

 Branchial regions extraordinarihj swollen., globular, rounded, 

 much higher and broader than the narrow cardiac region, and 

 devoid of titlercles and spines. Pterygnstoniian regions 

 traversed by a ridge that runs parallel with the antero-lateral 

 border. Clieli pedes of moderate length, their margins den- 

 tate, their surfaces smooth. Ambulatory legs also short. 



Related to Platyhnnbrus, but distinguished by the much 

 inflated and swollen branchial regions, that are not tuber- 

 culate. 



Lanihrus {Oncodolambrus) prcedator, sp. n. 



Carapace of the single male specimen that was collected 

 7 mm. long, front included, but without the abdomen; tlie 



* 6yK<t}8r]Sf swollen, inflated. 



