360 60 



Family Potamonidæ. 



Subfamily Potamoninæ. 

 Potamon (Potamon) brousmichei Ralhbun. 



Polamon (Potamon) brousmichei Rathbun, Nouv. Arch. Mus. Hist. Nat. (4), VI, 272, lig. 12 in text, pi. X, 

 Hg. 6, 1904. 



River on Koh Chang; I. 5; 4c? 2Ç 4 juv. Koh Kut, in little mountain river; 

 1 juv. Bay at Klong Salakpet (River on Koh Chang); III. 14; 1 c?. Klong Salakpet 

 (River on Koh Chang); III. 15; 2 juv. 



Family Portunidæ. 



Subfamily Carupinæ. 



Carupa læviuscula Heller. 



Carupa laeviuscula Alcock, LXVIII, 20, 1899. 



Koh Chang, among corals, 1 fath.; Ill; 1 Ç. 



Subfamily Portuninæ. 

 Scylla serrata (Forskâl). 



Scylla serrata Alcock, LXVIII, 27, 1899. 



Coast at Lem Ngob, 6 specimens. 



"Caught in great numbers in the mangrove. It is eaten by the natives; its 

 flavor I found quite excellent". 



Portunus sanguinolentus (Linnæus). 



Nepluniis sanguinolenliis Ai.cock, LXVIII, 32, 1899. 



At South point of Koh Chang in Sargassum; 1. 8; 2 juv. (1 minule). Koh 

 Kahdal, 1 fath., sandy bottom, sponges, dead corals; I. 11 ; 1 juv. (minute). 18 

 miles West of Koh Chang, surface; I. 31; 12 juv. (mostly minute). North of Koh 

 Samil, surface; II. 3; 1 juv. (minule). Between Koh Mesan and Koh Chuen, on 

 and under plants, surface; II. 5; 2 juv. North of Koh Chang, under leaves, seaweed, 

 etc.; II. 10; 17 juv. N. side of Koh Chang, under leaves, surface; III. 8; 3 juv. 

 (minute). South of Koh Chang, under floating Sargassum, "rain, not sun"; III. 13; 

 4 juv. (minute). South of Koh Chang, under floating Sargassum; III. 16; 2 juv. 

 (minute). 



Portunus pelagicus (Linnæus). 

 Neptuniis pelagicus Alcock, LXVIII, 34, 1899. 



Coast at Lem Ngob; XII. 30. 99; 3 specimens. Coast at Lem Ngob (seine); 

 XII. 26; 5 (^ 1Ç (all young). Coast at Lem Ngob, 0—1 fath., stones, mud; XII; 



