192 SMITHSONIAN MISCELLANEOUS COLLECTIONS 



This species, when Hving. is of a deep blood-red color, which is 

 seen under the lens to consist of crowded dots or punctse, less numer- 

 ous on the dorsal surface, where it is consequently lighter. Length 

 of the carapax in the male, 0.23; breadth, 0.215; length of greater 

 hand, 0.39; breadth, 0.16 inch. 



This species is common in from six to twelve fathoms on sandy 

 bottoms in Simons Bay, Cape of Good Hope. 



It differs from P. dchaani Krauss, also from the Cape, in its naked 

 carapax, broader front, with a less prominent median tooth, and 

 non-denticulated superantennary margin. 



300. PORCELLANA PULCHRA Stimpson 



Plate XXIT, Fig. i 



Porccllana piilchra Stimpson, Proc. Acad. Nat. Sci. Phila., x, p. 243 

 [81]. 1858. 



Carapax rather convex, with an even surface, apparently smooth, 

 but seen on close examination to be for the most part minutely and 

 closely lineolated in a transverse direction. Lateral margin regularly 

 though slightly convex, expanded with a refiexed laminiform crest. 

 Front very much projecting and laminiform. tridentate ; median 

 tooth mudi the largest, triangular, and acutely pointed ; lateral teeth 

 small, acute. External angle of the orbit acute, minutely serrated. 

 Flagellum of external antennae almost naked, joints oblong. Latero- 

 inferior regions somewhat concave. Chelipeds rather small and 

 slender ; angle at summit of meros very prominent ; upper surface 

 of carpus and hand with a median longitudinal ridge ; a single tooth 

 on the front margin of the carpus ; hand triangular, slender at the 

 base, its outer margin nearly straight, acute, ciliated, inner margin 

 forming a ridge continuous with that of the dactylus. Ambulatory 

 feet sparsely provided with plumose setae ; meros minutely serru- 

 lated above; dactylus half the length of the penult joint. The 

 meros-joint of the posterior or abnormal feet is short. The colors 

 in life are as follows: Carapax bluish-brown, often with a white 

 median dorsal line ; feet brownish clouded, darkest at the middle of 

 each joint ; basal joints white. Length of carapax in the female, 

 0.24 ; breadth. 0.23. Only two specimens were found, both females. 



Dredged from a muddy bottom in six fathoms, in Hongkong 

 Harbor. 



Genus PORCELLANELLA White 



In the genus for which we have retained the above name, because 

 White's typical species P. triloba belongs to it, the body is generally 



