n 4 



the rest bears above eight minute spinules, widely set, the 



last two being somewhat larger than the rest gracilis Borr. y ) 



(L. A. BORRADAILE, in: The Transact. of the Linnean Soc. of London, 

 2nd Ser. Zoology, Vol. XVII, Part 3, 1917, p. 398, PI. 58, fig. ia, 

 PI. 59, Fig. ib.) 



c s The dorsal border of the rostrum is spinose in all its extent. 



d } Dactyli of the three posterior legs long and slender, the dactylus 



of the 4 th pair measuring at least one-fifth of the propodus. 



c\ Carpus of the three posterior legs conspicuously longer than 



the propodus, the carpus of the 3 rd pair 2 — 2 1 / g -times as 



long as the propodus, dactylus of the 4 th pair one-fifth of 



the propodus. 



f x Rostrum almost twice as long as the carapace, upper border 



armed with 50 — 55, lower with about 70 teeth . . . longipes (A. M.-Edw.) 

 (A. MlLNE-EDWARDS, Recueil Figures Crust. nouv. 1883, PI. 20). 



f„ Rostrum one and a half as long as the carapace or a 

 little shorter, upper border armed with 27 — 1^, lower 



with 22 — 27 teeth longipes (A) M.-Edw.) var. indica de Man 



e s Carpus of the three posterior legs little longer than the pro- 

 podus, the carpus of the 3 rd pair 1 Y 2 -times as long as the 

 propodus, dactylus of the 4 th pair one-third of the propodus Ortmanni Dofl. 

 d 2 Dactyli of the three posterior legs short, the dactylus of the 

 4 th pair measuring less than one-tenth of the propodus. 

 g x Lower margin of the rostrum with numerous, 20 or more 

 spines ; dactylus of the 4 th pair of legs measuring 

 (according to the figure in Borradaile's paper) 1 / M the 



length of the propodus longirostris (Borr.) 



(L. A. BORRADAILE, in: A. WlLLEY's Zoological Results, Part IV, Sept. 

 1899, p. 413, Fig. iOrt — \oli). 



g„ Lower margin of the rostrum with 6 teeth; dactylus of 

 the 4 ,h pair of legs measuring about l / u the length of 



the propodus Sindoi (Rathb.) 



ö 2 Rostrum shorter than antennal scale. 



/i l Three teeth of the upper border of the rostrum behind 



the orbital margin, lower margin smooth .... Jiypanodon Dofl. 

 (F. DOFLEIN, Ostasiatische Dekapoden, München 1902, p. 615, Taf. III, Fig. 1). 

 //., Five teeth of the upper border of the rostrum behind the 



orbital margin ; lower margin with one tooth near the tip brevis (Rathb.) 

 (M. J. RATHBUN, in: U.S. Fish Commission Bulletin for 1903, Part. III, 

 Wash. 1906, p. 916, Fig. 65). 



1) This species is placed here with some doubt, because the descviption does not mention vvhether the legs of the 2 ntl pair ave 

 equal or not: according to Mr. BORRADAILE, hovvever, it appears to be related to Pits. martia (A. M.-Edw.) and Pies. ensis (A. M.-Edw.). 



