Crustacea Decapoda and Stomatopoda. 



251 



the postero-lateral border is divided into thirds by two clusters of enlarged and 

 prominent tubercles (text-fig. 7). The 

 grooves and depressed portions of the 

 carapace are smooth and the elevated 

 parts tubercular. The sculpture of the 

 dorsum is much as in E. diadumena, Al- 

 cock, but the grooves are not so deep. 

 The elevations on the gastro-cardiac, in- 

 testinal and branchial regions are coarsely 

 granulate and in the middle of the two 

 former are several very large upstanding 

 tubercles of a pearly appearance and of 

 a size much greater than those on any 

 other part of the carapace. The gastro- 

 cardiac and intestinal elevations are im- 

 perfectly separated from one another 

 by a transverse furrow ; the granules on 



Fig. 7. — Ebalia heterochalaza, sp. nov. 



them are very dissimilar in size. The front is deeply hollowed in the middle line ; its 

 antero-lateral portions bear numerous fine denticles. The anterior margin is practically 

 straight, the edge of the epistome being visible in dorsal view. The hepatic facet 

 is well defined ; its lower border is excavate posteriorly and is edged with excep- 

 tionally large tubercles. Its upper margin is defined by smaller tubercles which 

 form a cluster near the middle of its length. The posterior limit of the facet is marked 

 on either side by a large tubercle and the margins between these tubercles and 

 those that define the widest portion of the carapace are straight and posteri- 

 orly divergent. The posterior margin is narrow, slightly sinuous, a little promi- 

 nent at the middle point and with protruding lateral angles. The lower sur- 

 face of the carapace, on either side of the outer maxillipedes, is conspicuously 

 granular. 



The cornea of the eye is scarcely visible in dorsal view ; the orbits are in open 

 communication with the antennular fossae. The margin of the epistome bears two 

 sharp processes separated by a median emargination. 



The endopod of the outer maxillipedes is very narrow ; the merus is almost ex- 

 actly the same length as the inner border of the ischium. The exopod is only a trifle 

 shorter than the endopod and has a strong outward bulge ; it is conspicuously granu- 

 lar and its outer rnargin is very strongly curved. 



The cheHpedes in the male are scarcely longer than the carapace. The merus is 

 trigonal with granular edges ; it is covered with minute granules on its lower side and 

 with a few near the base of its upper surface. There are minute granules on the car- 

 pus. The upper edge of the palm is roughened and on its lower surface are two finely 

 beaded fines that extend from its base to the tip of the fixed finger. The uppermost 

 of these lines is better defined than the lower and the space between them is smooth. 

 The fingers are heavy and meet only in the distal half of their lengths, where they 



