hairs or grooves, and even the transverse row near the suture, on the ischium, is entirely 

 wanting. The exognath is very little exposed. 



The very broad abdomen of the Q consists of 7 separate segments; it entirely covers 

 the sternum and the numerous eggs concealed under it measure about 0.2 mm. 



The chelipeds of the 9 (fig- - ^) are as long as the distance between the external orbital 

 angles, but exceedingly weak, rod-like; the meropodite projects beyond the carapace, is about 

 as long as the chela and twice as long as the carpopodite ; both arm and wrist are covered 

 with small granules, but otherwise quite unarmed; the palm is very low, its height being only 

 one-third of its length, and somewhat longer than the straio'ht, slender finders, the inner maro-ins 

 of which are entire ; fingers and palm are fringed at both margins with long hairs. 



Of the walking legs the penultimate pair is the longest, nearly twice the distance between 

 the anterior angles of the carapace; the last pair is the shortest. Half the length of the legs 

 is due to the great elongation of the slender meropodite, which at its maximum breadth (in 

 its anterior third) is only one-fourth as broad as long, quite unarmed, not depressed and of a 

 frosted appearance owing to the presence of minute, squamiform granules. Carpo- and propodite 

 are smooth, fringed with long hairs. The dactyli are straight, much compressed, shorter than 

 the propodites and likewise fringed; those of the last pair are slightly curved backward. 



The animal is of a uniform ivory-white colour. 



Dimensions in mm. : 



Distance between external orbital angles 5. — 



Length of carapace 3.25 



Distance between lateral teeth of carapace .... 6.25 



Posterior margin of carapace 4.5 



Length 1 I 4-5 



J of meropodite of penultimate pair of legs I 

 Breadth ] ( i- — 



Breadth of front between eye-stali<s i. — 



Length of eye-stalk 1.75 



Length of cheliped 5. — 



Camptandrium Stimpson. 



185S. CaDiptandriuni Stimpson. Proc. Ac. Nat. Sc. Philadelphia, 1858, p. 107. 



I. Camptandriutn sexdentatttm Stimpson. PI. 5, Fig. 3. 



1858. Camptandrium sexdentatum Stimpson. Proc. Ac. Nat. Sc. Philadelphia, 1858, p. 107. 

 1907. Camptandrium sexdentatum Stimpson. Smithson. Inst., Miscell. Coll., v. 49, p. 13S, 

 pi. 17. f- 4- 



Among the undetermined material of Crustacea in the Leiden Museum I found to my 

 great surprise a c? of this remarkable and apparently extremely rare species, that has never 

 been found again, since its having been dredged by Stimpson from a depth of a few fathoms 

 in bays near Hongkong. My specimen had been brought home by Dr. Buitendijk from the 

 Bay of Batavia, in 1909. Stimpson's figure is very good and enables one at once to recognize 

 the animal, but not all the details are shown, neither are these exhaustively spoken of in 

 the description. 



65 



SIBOGA-EXPEDrriE XXXl.X c. 9 



