CARCINOLOGICAL STUDIES. 259 



area. The external frontal lobes are limited next the or- 

 bits also only by slight depressions. The inferior edge of 

 the smooth , though minutely punctate front , is interrupted 

 in the middle by a broad but shallow emargination. 



The lateral margins of the cephalothorax are armed 

 with a prominent epibranchial tooth behind the 

 external orbital angle, and this tooth projects laterally a 

 little more outward than the external angle of the 

 orbit, so that the cephalothorax presents its greatest width 

 at the epibranchial teeth. Behind the second antero-lateral 

 i. e. the epibranchial tooth , which is a little longer than 

 the first tooth formed by the outer angle of the orbits, 

 still a very slight trace of a second epibranchial tooth is 

 seen, and behind it the lateral margins appear somewhat 

 concave. The posterior margin, finally, is just half as broad 

 as the width of the cephalothorax. 



The lobe at the infero-internal angle of the orbits is 

 very small. The second joint of the external maxillipedes 

 is longitudinally grooved and the third joint oval , scar- 

 cely longer than broad. Abdomen and sternum are smooth, 

 sparsely punctate. The former (fig. 6^) is rather narrow; 

 the terminal segment is exactly as long as its posterior 

 margin is broad; the somewhat shorter, penultimate seg- 

 ment , the lateral margins of which are slightly convex , is 

 just half as long as its posterior margin and the antepen- 

 ultimate segment is scarcely shorter than the penultimate. 



As regards the chelipedes of the male, I will remark 

 that the outer surface of the arms is transversely rugose , 

 that the upper margin is unarmed at its distal end and 

 that the little prominent anterior margin , though some- 

 what granular, is also unarmed. The upper surface of the 

 wrist is transversely rugose and unarmed at its internal 

 angle. The fingers are scarcely longer than the palm. The 

 convex outer surface of the palm is coarsely and irre- 

 gularly punctate, but for the rest quite smooth, 

 without a trace of granulation; its inner surface 

 is somewhat granular near the articulation of the fingers , 



Notes t'roui the Leytlen Museum, "Vol. XI"V. 



