Boone, Crustacea, Cruise of "Alva," 1931 101 



of legs also has a median node, but is less ridged or carinate in the 

 median line. 



References : Penev^ indicus variety merguiensis, de Man, J. G., 

 Journ. Linn. Soc. Zool. London, vol. XXII, 1888, p. 287, pi. 

 18, fig. 8, pi. 19, fig. 1. — Alcock, a., Catal. Indian Decap. 

 Crust., pt. 2, Macrura, fasc. I, 1906, p. 13, pi. 2, fig. 4. — 

 Rathbun, M. J., Bull. Mus. Comp. Zool., vol. LII, 1908-10, 

 p. 315. — Kemp, S., Mem. Asiatic Soc. Bengal, vol. VI, 1918, 

 p. 293. 



Peneus merguienesis, de Man, J. G., Rept. Siboga-Expeditie, De- 

 cap., Monogr. 39a-2, 1916, pi. 9, fig. 33a, p. 104. 



Family: SERGESTIDAE 



Subfamily: Sergestinae 



iGenus : ACETES H. M. Edwards 



Acetes indicus H. M. Edwards 



Plate 25 



Type : The original record of this species was from the mouth 

 of the Ganges. The type is deposited in the Museum of the Jardin 

 des Plantes, Paris. 



Distribution: Ganges Delta (H. M. Edwards) ; Bombay, Bay 

 of Bengal, Gulf of Siam (Kemp) ; southern end of Durian Strait, 

 Dutch East Indies (Boone). I concur in Mr. Kemp's decision 

 that the records of Dana, Walker, Henderson and Pearson are 

 open to doubt, owing to the insufficient analysis of the species by 

 Dr. Milne Edwards. 



The "Alva" record substantially extends the southern record 

 of this species. The present specimens were obtained in salt water. 

 This species has been reliably reported from both brackish and 

 salt waters. 



Material examined: Fifty-four specimens, taken in 14 

 fathoms, on muddy bottom, near Equator to the southward of 

 South Brother's Island, south entrance of Durian Straits, Lat. 29' 

 N. by E., Long. 104° 47' E. The series includes adult females and 

 immature males. 



Technical description: The adult females conform in all 

 details with Mr. Kemp's description, which was based on what 



