293 



f The rick>e on either side of the micldle line of the 2 nd 

 abdominal somite is broken in two by a vertical furrow. 

 Rostrum triangular, bidentate at apex . . propensalata (Bate), var. hilarula de Man 

 e a Apices of the abdominal pleura not truncated, at least 



those of the 2 nd somite subacute. 

 ƒ, Last thoracic sternum of the adult female not carinated. 

 From the anterior extremity of the median crest of the 

 3 1 ' 1 abdominal somite a ridge runs backward and 

 slightly outward, which is separated by an interruption 

 from the transverse ridge near the posterior margin. 

 Huge spine at the anterior extremity of the lateral 

 crest of the carapace only slightly turned outward . Sibogae de Man 

 ƒ ' s Last thoracic sternum of the adult female sharply carinated. 

 On the 3 rd abdominal tergum the ridge on either side 

 of the median crest passes without an interruption 

 into the transverse ridge near the posterior margin. 

 Huge spine at the anterior extremity of the lateral 



crest of the carapace strongly turned outward. Sibogae de^lan^vawititermediade'Slan 

 d„ Median carina of the carapace with 4 or 5 teeth or serrations. 

 c\ Carpus of 2 nd peraeopods longer than the chela. 

 / 1 A tooth on either side of base of rostrum. 

 Antennal scale almost twice as long as wide . 

 (P. GoURRET, Révision des Crustacés podophthalmes du Golfe de Mar- 

 seille, 1888, p. 143, PI. XII, figs. 19—23 et PI. XIII, figs. 1 — 10.) 



/„ No tooth on either side of base of rostrum .... 

 (L. A. BOR.RADA1LE, in: Trans. Linnean Soc. London, Vol. XVII, 1917, 

 p. 411, PI. 59, fig. 12.) 



e. 2 Carpus of 2 nd peraeopods shorter than the chela . 



(F. Doflein, üstasiatische Dekapoden, München, 1902, p. 620, Taf. I, 

 figs. 4, 5.) 



a 2 Second lateral carina of the carapace not interrupted, hepatic 



groove absent; lateral parts of the i st and 2 nd abdominal 



somites with sharp longitudinal keels that are continuous 



with those on the carapace. 



/', First lateral carina of carapace with 7 teeth, second with 7 — 9. 



Antennal scale little longer than broad. 



c x Fourth abdominal somite with only one lateral carina on 



each side orientalis Hend. 



(J. R. Henderson, A contribution to Indian Carcinology, 1893, p. 446, 

 PI. XL, figs. 16, 17.) 



Lacazei (Gourret) 

 rugulosa Borr. x ) 

 Habcreri (Doflein) 



1) This species is placed under i/ 2 , because in the figure the median carina of the carapace appears 5-dentate. Borradaii.k's 

 description, however, is insufficiënt. 



