61 361 



2 c? 2 Ç 5 jiiv. Coasl of Koh Kong; I. 23; 4 Ç juv. Fishing-weir at Koh Kong; 



I. 21; le?. The shore outside the Mangrove at the Station on Koh Chang; III. 11; 

 2 juv. Outside mangroves on Koh Chang, very shallow water; III. 18; 1 juv. 



Portunus (Achelous) gladiator (Fabricius). 



Neplunus (Amphitrite) gladiator Alcock, LXVIll, 35, 1899 (Not Amphitrite media Stimpson). 



Between Koh Mesan and Cap Liant, 9 fath. ; II. 4; 2 juv. Koh Kam, 5 fath., 

 gravel; II. 6; 1 c?. Between Koh Rial and Koh Mesan, 3 — 5 fath., sand, algæ; 



II. 7; 1 juv. Gulf of Rayong, 7 — 10 fath., sand, mud, shells; II. 8; 1 juv. 



Portunus (Achelous) hastatoides (Fabricius). 



Neptiinus {Hellenus) hastatoides Alcock, LXVIII, 38, 1899. 



Singapore, 2—3 fath.; XII. 4; 3 c? 4 ? (1 with Rhizocephalid). Between Koh 

 Kut and Koh Kahdat, 10 fath., shell bottom; I. 10; 2?. S. of Koh Bidang, 9 fath., 

 mud, shells; I. 18; 1 ?. N. of Koh Kong, 8 fath., mud bottom; I. 23; 1 <? 2 ?. 

 N. of Koh Kut, 10 fath.; I. 23; 1 c? juv. 1 ? juv. West of Koh Kong, 10-15 fath.; 



I. 24; Ic?. East of Koh Chang, 6 fath., seine; I. 25; 2c? 4? (1 with Rhizocephalid). 

 Koh Kahdat, 8—10 fath., mud; I. 27 ; 5 c? 8 ? (4 ovigerous). Off North point of 

 Koh Kut, 10 fath. (large seine); I. 27; 3c? 1?. West of North end of Koh Kut, 

 11 fath.; I. 27; 2? (1 ovigerous). South of Koh Kut, 17—20 fath., mud (large 

 seine); I. 28; 2 ? (1 ovig.). 15 miles west of Koh Kut, 30 fath., (s. m.); I. 28; 1?, 

 1 juv. 10—12 miles west of Koh Chang, 20 fath., mud; I. 29; 1 c? 3 Ç. Sound at 

 Koh Chang, 3—5 fath.., soft clay bottom; 11 c? j, 17 ? j. 20 miles south of Koh 

 Samit, 20 fath., mud; I 31; 2c? 4 Ç. 4—6 miles south of Koh Samit, 14-18 fath.; 



II. 1; 1Ç with Rhizocephalid, 1 juv. Koh Kam, 10 fath., gravel; II. 6; 1?. Between 

 Koh Mesan and Cap Liant, 5 — 8 fath., sand, stones; II. 7; 1 c?. Gulf of Rayong, 7 — 10 

 fath., sand, mud, shells; II. 8; 1 (?. Koh Kahdat, 5 8 fath., sandy mud; II. 16 and 



III. 4; 1Ç. Tung Kaben, 6 fath., sand, mud, phanerogams; II. 22; 1 Ç. 



Portunus (Achelous) spinipes (Miers). 



>leplunus {HcUeniis) spinipes Alcock, LXVIII, 39, 1899. 



S. of Koh Kut, 17—20 fath., mud (large seine); I. 28; 2 c? 1?. 10-12 miles 

 west of Koh Chang, 20 fath., mud; I. 29; 5c?. 20 miles south of Koh Samit, 20 

 fath., mud; I. 31; 2c?. 



Portunus (Achelous) tenuipes (de Haan). 



Neplunus (Hellentis) tenuipes Alcock, LXVIII, 42, 1899. 



4 miles S. of Koh Sakait, 9 fath , shell bottom; II. 3; 1? ovig. Gulf of 

 Rayong, 7 — 10 fath., sand, mud, shells; II. 8; 1 c?. Koh Kam, 5 fath., gravel; II. 6; 

 1 c? juv. Between Koh Rial and Koh Mesan, 3 — 5 fath., sand, algæ; II. 7; 1 juv. 

 6 miles east of Cap Liant, 9 fath., shell bottom; II. 7 ; 2 Ç. Koh Kahdat, 4 — 5 fath., 



