CRUSTACEA. 25 



abdominal segments is a round, dark spot. The entire surface of the animal is smooth, 

 hairless, hard, polished, and porcellanous. Eyes black. 



Hab. Borneo. 



Zebrida Aclamsii, White. Pro. Zool. Soc, 1847. 



A very distinct variety, from about twelve fathoms, in the Sooloo Seas, had the carapace 

 of a light green, with deep, red-brown stripes, and the legs and chelae of a pearly semi- 

 opaque white, very distinctly banded with deep red-brown. 



The specimen from which the foregoing description is taken, was dredged from a sandy 

 bottom, at about six fathoms water, near the mouth of the Pantai river, on the coast of 

 Borneo. The description, it ought to have been remarked, was from a living specimen ; but 

 even the dried individual in the Museum collection is very distinctly marked. 



III. PARTHENOPID^E. 



In the family of Parthenopidce, the results of the Expedition furnish us with forms highly 

 interesting to the Crustaceologist, including two new genera and ten new species. The 

 genus Cryptopodia has been strengthened and confirmed by the discovery of a new and well- 

 marked species, and several peculiar forms of Parthenope and Lambrus are here for the first 

 time indicated. In their habits, the members of this group are feeble and inactive, feigning 

 death when captured, and living generally in deep water, seeming to prefer a stony or gravelly 

 bottom ; some specimens of Parthenope were obtained by the dredge on the coast of Borneo, 

 in thirty fathoms water, from a clear sandy floor ; and the sandy mud of the China Sea, in 

 many parts, abounds in Lambri. 



1. LAMBRUS, Leach. 



1. LAMBRUS HAEPAX, Adams Sf White. Tab. VI. Fig. 3. 



TAorace subtrigonali, lavi, in fronte rotundato, in medio carinato, carinata tribus rotundatis tuberculis 

 armata, antice furcata, intervallum depressum triangulare exhibente, marginibus lateralibus valde crenatis, cre- 

 nationibus depressis et rotundatis ; angulis latero-posterioribus in depresso, triangulari, subobtuso, spinoso, 

 processu desinentibus ; posteriore thoracis parte valida spina retrorsum et extrorsum directa, paululurn 

 tuberculifera, et valida carina in posteriore parte regionis branchialis continuata ; altera minore spina, propius 

 mediam lineam posita, valde carinata, spatio depresso inter se spinamque priorem ; tribus parvis tuberculis 

 in linea intermedia, una centrali, et una ad utrumque latus. 



Fronte paululurn producta, antice rotundata, margine paululurn denticulata. 



Chelis vix duplici longitudine thoracis ; brachio et carpo, marginibus tuberculis rotundatis armatis ; 

 manu lsevi, superiore angulari margine tuberculifera. 



Hab. Oram Bninensem, (Mare Sinense.) 



Carapace subtrigonal, smooth, rounded in front, carinated in the middle, the keel armed 



H 



