310 10 



the color is different:— Specimens tliat have been in alcohol 6V2 years have the 

 carapace and chelipeds above smoky, with the carapace light yellowish behind and 

 with a longitudinal row of faint light spots either side of the middle; legs banded 

 with deep yellowish. 



Leucosides haswelli (Miers). 



Plate I, ng. 10. 

 Leticosia haswelli Alcock, LXV, 222, 1896. 



Koh Chuen, 30 fath., shell bottom; 11. 1900; 1 ^. 



In this specimen there are 19 or 20 lateral tubercles, beginning at the anterior 

 end of the hepatic region and extending to the level of the base of the first ambula- 

 tory leg; tubercles mostly large; on the antero-lateral margin there are one or two 

 small tubercles or granules just behind the front, followed by 7 or 8 large, spaced 

 tubercles; on the postero-lateral margin the tubercles are smaller than those im- 

 mediately preceding, diminish regularly backward, and are crowded close together. 

 These tubercles, as well as those on the upper surface of the arm and inner margin 

 of wrist and hand are bright red. The hand has, below the inner edge, a row of 

 faint granules extending its whole length; outer margin of hand rather sharp. 



Leucosides whitei (Bell). 



Leucosia whitei Alcock, LXV, 225, 189G. 



Koh Chuen, 30 fath., shell bottom; II. 1900; 1 ?. 



Leucosides hæmatosticta (Adams and White). 

 Leucosia hæmatosticta Alcock, LXV, 229, 1896. 



4 miles S. of Koh Sakait, 9 fath., shell bottom; II. 3; 1 ? juv. Koh Kam, 5 

 fath., gravel; II. 6; 1 c? juv. Between Koh Chuen and Koh Chang, 15 fath., mud; 

 III. 3; 1 c?. 



Leucosides margaritata (A. Milne Edwards). 



Leucosia margaritata Alcock, LXV, 231), 1896. 



Between Koh Kahdat and Koh Kut, 6 fath., sandy clay; I. 9; 1 Ç. North of 

 Koh Kut, 10 fath.; I. 23; 1 J*. 15 miles west of Koh Kut, 30 fath. (s. m.); I. 28; 

 1 c?. Between Koh Chuen and Koh Chang, 15 fath., mud; III. 3; 1 ?. 



Leucosides craniolaris (Linnæus). 



Leucosia craniolaris Alcock, LXV, 231, 1896. 



Singapore, 2—3 fath.; XII. 4; 2 ? (1 ovig.). 10—12 miles west of Koh Chang, 

 20 fath., mud; I. 29; 1 c? 1? ovig. 20 miles south of Koh Samit, 20 fath., mud; 

 I. 31; 1?. Koh Kahdat, 5—8 fath., sandy mud; II. 16 and III. 4; 2d' 2? (1 ovig.). 

 Tung Kaben, 6 fath., sand, mud, phanerogams; II. 22; 3 c?. Between Koh Chuen 

 and Koh Chang, 15 fath., mud; III. 3; 1 c?. North of Koh Kut, 15 fath., mud; 

 III. 4; 1 $ ovig. 



