31 



II. Only the last pair of less reduced iu size and subdorsal. Lateral 

 borders of carapace well defined. The appendages of the 6th 

 abdominal somite are represented as in the Bromidm. Epipodites 

 are present on the chelipeds and next two pairs of legs. According 

 to A. Milne Edwards and Bouvier the gill-plumes are 20 on either 

 side ... ... ... ... ... ... Dyxomenidj. 



Of the nineteen or twenty known species of Indian Dromiidea only ten or 

 eleven are likely to fall in the way of ordinary collectors, the other eight being 

 known only from considerable depths. 



Family Homolodromid.i:, Alcock. 



Alcock, Jouru. Asiatic. Soc. Bengal, Vol. LXVIII, pt. 2, 1899, p. 127. 



Carapace longer than broad, convex in both directions, the lateral borders 

 hardly defined. 



Front cut into two prominent teeth, between which, but on a much lower 

 23laue, a third small tooth is sometimes present. 



Antennal flagclla longer than the carapace. 



External maxillipeds opercular but with a pediform cast. 



Chelipeds equal, slender, though stouter tlian the legs. 



First two pair of legs much longer than the chelipeds : last two pair much 

 shorter than the first two pair, subdorsal, prehensile or chelate. 



The abdomen in both sexes consists of 7 separate segments : there are no 

 lateral platelets intercalated between the Gth and 7th segments. 



The gills are trichobi'anchiie, or are intermediate between trichobranchia? 

 and phyllobranchiaj : the gill-plumes are very numerous — there may be as many 

 as 20 on either side. 



Foliaceous epipodites are present on the chelipeds and next two pairs of legs. 



The sternal grooves of the female are short, ending at the level of the 

 genital openings. 



This family contains one Indian genus, ArarJniodrumia, which differs from 

 the other two known genera of the family as follows : from Homoludromia A. M. 

 Edw. in having the eyes and antennules retractile into orbito-antennular cavities, 

 and from Dicraaodromia A. M. Edw. in having a small arthrobranch above the 

 2nd maxillipeds. 



All the members of the family belong to the Deep-sea fauna. 



