67 367 



Dromidia unidentata (Rüppell). 



Dromidia unidentata Alcock, LXVII, 139, 1899. 



Koh Chuen, 30 falh.; II; 1? with Rhizocephalid attached to, and concealed 

 by, the abdomen. Koh Kram, 30 falh.; III. 2 and 21; 1 d". Koh Kahdal, 5-8 fath., 

 sandy mud; II. 16, III. 4; 1 juv. 



Cryptodromia canaliculata Stimpson. 



Cnjplodromia canaliculata Ai.cock, LXVII, 142, 1899; Stimpson, Smithson. Misc. Coll., XLIX, 176, 1907. 



Between Koh Mesan and Koh Chuen, 30 fath., stones; II. 5; 1 J* juv. 



A small specimen, only 4-1 mm. long. The nodules of the wrist and hand 

 are very strong; on the wrist are four large, and two or three small nodules; and 

 on the upper surface of the palm five large nodules. 



Conchoecetes artificiosus (Fabricius). 



Conchœcetes artificiosus Alcock, LXVIII, 151, 1899. 



20 miles E. S. E. of Koh Samit, 13—14 lath., sandy mud, shells; II. 2; Id" 1 ?• 

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



The J' from Koh Chuen is half grown and seems intermediate between 

 C. andamanicus Alcock (op. cit., p. 152) and typical arli/iciosus; the front is cut into 

 two triangular teeth, with the inferior denticle slightly visible in dorsal view; there 

 is a rudimentary tooth on the upper border of the orbit; no traces of lateral teeth, 

 the sides being arcuate; subhepatic region not bounded by distinct rows of tubercles 

 or granules. 



47* 



