286 On Indian Deep-sea DredrjiiKj. 



AmSTJiOMORPHA, gen. nov. 



Rostrum many- toothed ; an hepatic spine is present ; man- 

 dibular palp robust, with terminal joint subbif urcate ; antennal 

 scale small ; postero-lateral angles of abdominal pleura 

 second to fifth simple and unarmed ; dorsal carina of the last 

 four abdominal terga ending in a spine; legs -without exopo- 

 dites ; dactylopodites of the last two pairs setaceous ; bran- 

 chial formula as in Arista^opsis, according to Spence Bate. 



Type Arlsteus rostridentatus, Sp. Bate. 



[19. AristcBomorpha rostridentata (Sp. Bate). 

 Arisfeu-8 rostridentatus, Sp. Bate, ' Challenger' Macrura, 1888, p. 317, 



pLlL, ?. 

 A fine female was taken in a previous season off Port Blair 

 in the Andaman Sea, 271 fathoms.] 



HEMIPENiEUS, Sp. Bate (p.). 



20. UemipeneBUS Carpenteri^ W.-M. 

 Hemipenam Carpenteri, W.-M., Ann. & Mag. Xat. Hist. (6) vii. Is91, 



p. ItO, ?. 



A female from Station 106, 1091 fathoms. 



Colour in life transparent orange. 



It has four spines to the rostrum, the additional spine being 

 developed in front of the normal three. 



A young specimen from Station 111, 1644 fathoms, colour 

 in lite orange, has the normal number of spines to the rostrum. 



A female i'rom the Bay of Bengal, 1300 fathoms, has only 

 two teeth to the rostrum, the apical one being apparently 

 absent. 



Having only four females, and those differing, we are not 

 in a position to attempt the determination of the relation of 

 this species to other iornis, and so leave it for the present in 

 Sjience Bate's genus. 



Subfamily? Besthesictmina. 

 Gennadas, Sp. Bate. 

 21. Ginnados parvusy Sp. Bate. 

 Gennadas parvus, Sp, Bate, Ann. & Mag. Nat. Hist. (5) viii. 1881, 



p. 191 ; id. * Clialleuger" Macrura, 1888, p. 340, pi. lix. 

 Gennadas parvus, "NVood-Mason, Ann. & Mag. Nat. Hist. (6) vii. p. 180, 



? Amalojtencsus eh-yans, ^^ .-M., los. ctt. 



One male from Station 108, 1043 fathoms ; another from 

 Station 109, 738 fathoms; and a third from Station HI, 

 16-4-1 fathoms; all of a uniform deep iakc-cohnir. 

 [To bo continiu'd.] 



