480 



Records of the Indian Museum, [Vol. XXIV, 



Outer uropod one and a half times as long as the telson. 

 Length of adults of both sexes, 5 mm. There is a consider- 

 able development of chromatcphores on the antennular peduncle, 

 antennal scale and its peduncle, mouth parts and first two pairs of 

 thoracic limbs, brood lamellae, along the whole of the ventral sur- 

 face of the abdomen, telson and uropods, and, as, at the time of 

 death, these chromatophores were expanded, the preserved animals 

 present a dusky appearance. 



Remarks. — This species differs from all the other described 

 species in having the margins of the telson armed throughout their 

 entire length with spines and in the very large number of spines 

 on the inner uropod. Only D. hanseni, among the described 

 species, agrees with the present one in having a smooth body devoid 

 of spinules. 



Three specimens of a species of Doxomysis from Port Blair 

 are held over to await further material. 

 They differ from D. littoralis in having 

 the whole of the carapace and abdomen 

 covered with fine spinules which even 

 extend to the eyestalks, in the shorter 

 antennal scale which barely outreaches 

 the antennular peduncle, in the slightly 

 different arrangement of the spines on 

 the telson (text-fig. 18) and in the longer 

 uropods, the inner being one and a half 

 and the outer twice as long as the telson. 

 They agree with D. littoralis and differ 

 from all the other described species in 

 having the spines on the lateral margins 

 of the telson extending throughout their 

 whole length. The rostral plate is trian- 

 gular in shape, with the apex bluntly pointed and quite short, 

 while the eyes resemble the smaller eyes of D. littoralis rather 

 than the larger eyes of the pelagic species. The specimens are 

 rather damaged and though they appear to represent a new spe- 

 cies, it does not seem advisable to give them a name at present. 



Text-fig. 18. — Doxomy- 

 sis sp. 



Telson, X 65. 



Doxomysis anomala, sp. nov. 



Text-figs, iga-f. 



Localities. — Port Blair, Andaman Islands. 



St. 3. One hundred and twenty specimens, up to 5*5 



mm. (Types.) 

 St. 32. One female and two males. 



Description. — Body smooth without spinules ; carapace short, 

 leaving the last three thoracic somites exposed dorsally, produced 

 in front into a short triangular rostral plate with an obtuse apex, 

 not covering the eyestalks. 



