— àS\ — 



fiirliiorinore on ail appendagcs, eye-slalks included, and linally at ioast 

 /|-G oi'gans in a lioiizonlal line on llio innei' sniTace of iho carapace ahove 

 llie upper end ot llie bianclii*. I)nl visible on llic oulei- sni-rarc. In .S. Chril- 

 lengrri aijoul iGo organs are found (kemp, i<)i3; Ilanseh in if)o3 and 

 1919): in .S. fiilo-cns and S. splcndens sliglilîy moi-e, bnt in S. glorinms a 

 naicli liiglicr nnniber; an excellent charactcr is lliat the anlemud sqiiania 

 lias on ils lower side 1 1 organs in S. gloriosus, but in tlic thrcc otbcr 

 species only h organs, ail very casily seen. S. gloriosus, S. fnigens and 

 S. splemlens ave nearly eqiial in size, measuring about 5o mm. from apex 

 of roslrnni to lip of tclson , while S. Clinllengevi is very considerably smaller. 



Rostrnm is conspicuonsly longer tlian deep, direcled forwards and 

 somewbat upwards, distally very taj.ering in the main bccauseils lower 

 margin lurns mnch upwards, but lin. end is prodnced into a minute tri- 

 angle. The supra-ocularspine iswrnling: llie liepalic spine welldeveloped: 

 the gastro-hepalic groove distinct on tliesides, indistinct above; the cer- 

 vical groove is generally very conspicuous; 5-6 luminous organs in the 

 horizontal line on the side. Third and fourth abdominal segments, fre- 

 nuentlv also first and second segaients, lonoitudinally somewbat excavated 

 in the médian line. The eyes are large, considerably depressed, seen Irom 

 above longer than broad, and nearly longer than the inner margin of 

 their stalks; no tubercle or process above on the stalk close behind the 

 inner dislal end. 



The pedundes of iJie anlennula^ soniewhat long; lirsL joint broad wilh 

 ils outer margiîi only a lillle shorler than ihe outer margin of the tno 

 other joints together: second joint rather ihick: third joinl about as long 

 as ihc second and distinctly less thick, seen from the side conspicuonsly 

 deeper in the maie than in female: in the maie tlie whole lower margin 

 of tins joint is nearly horizontal as in the female . because the dislal third of 

 the joint is nol expanded dcwnwards in a large triangle as in S. Challen- 

 gcri or in a large plate with two long processes as in S. fitlgens, but the 

 terminal lower angle of the joint is prodnced forwards into a small or rudi- 

 menlary tooth, wanling in the female. In the maie the lower flagellum 

 of the antennula; dilTers mnch from that in any of the three other species, 

 at its clasping organ is rndimenlary; ihe proximal joints are mnch less 

 thickened than in the other forms and the upper process, which in the two 

 Indian species is very sinuate and longer than the joint belovv it, is in 

 .S. splendcHS balf or only one-third as long as that joint, simple and feebly 

 curved. 



The antennal squama has the outer dislal loolb well developed and 

 generally reaching a little beyond theflally convex terminal margin. Fourth 

 thoracic legs reach about to ihe front margin of the eyes: liflh legs some- 

 wbat more than balf as long as fourlh pair, inodei'alely bioad, wilh the 

 terminal joint onlv a little shorler than the preceding one. Kxopod of uroT 



