3o6 



Records of the Indian Museum. 



[Vol. XXII, 



and irregular tu'i)trclc> an 1 ridges between the submedians and 

 1 aterals. 



The carinae on the telson (text-fig 4), both on its upper and 



under surfaces, are inter- 

 rupted and few if any 

 extend continuously 

 throughout its length : 

 the differences as regards 

 the upper surface will be 

 apparent on conipariiig 

 text-fig. 4 with the figure 

 of 5. muHicarinata pub- 

 lished in 1 9 13. The in- 

 ner edge of the bifurcate 

 process of the uropods 

 bears only a series of 

 small denticles in place 

 of the sharp spines found 

 in the allied species. 



As regards colour- 

 ation 5. liraia is distin- 

 guished by the presence 

 of a large round black 

 spot at the base of the 

 telson on the upper side. 

 The dusky patch visible 

 on the second abdominal 

 somite in S. inultica/imita is :dso present in 5. lirata, birt of that 

 on the fifth somite no trace can be found. Small dark chroraato- 

 phores are more thickly scattered over the dorsal surface, parti- 

 cularly on the two ultiinate Segments of the antennular peduncle. 

 The terminal segment of the outer uropod, which is jet black in .S'. 

 multicarinata /\s merely suffused with pigment on its inner side. 

 The larger of the two specimens is 69 mm. in length. 

 To summarize the characters which distinguish 5, liraia from 

 .S". multicarinata : — 



(i) The carinae are less numerous on both carapace and 

 abdomen and tend, especially at the sides, to be broken up into 

 tubercles and short ridges. 



(ii) On the exposed thoracic somites only the submedian 

 carinae end in spines ; on the abdominal somites, between and 

 including the intermediates, there are never more than six carinae 

 which end in spines. 



(iii) The mandibular palp is entirely absent, 

 (iv) The raptorial dactylus bears six teeth, 

 (v) There is a large black spot at the base of the upper surface 

 of the telson. 



In the number of teeth on the raptorial claw and in the 

 absence of the mandibular palp 5. lirata resembles S. costata. 

 It is, however, readily distinguished from that species (i) by the 



Tc'Xt-ris. I-. — Sqiiilld liyata, sp. iiu\. 

 Last two .•ibdominal somites and telson. 



