Crustacea Decapoda and Stomato])oda. 
•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 betweeri 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 margin is very strongly curved. 
. The chelipedes 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 lines 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 
