114 CRUSTACEANS OF THE 



being iu proportion to the length as 4:3. The gastric 

 region is somewhat convex from before backwards (Fig. 

 13*) and also from side to side; the anterior branchial 

 lobe is slightly swollen and scarcely distinct from the pos- 

 terior. The cardiac and intestinal regions finally are flat- 

 tened. The cervical groove is interrupted; the two anterior 

 shallow depressions between each protogastric region and 

 the anterior branchial grooves that reach till near the 

 lateral margin of the cephalothorax, would, when prolonged 

 backwards, make an angle with one another slightly 

 larger than a right one, their direction being very 

 oblique ; the median portion of the cervical groove is also 

 shallow. An anterior and a posterior pair of puncta, ad- 

 joining the cervical groove on the gastric region, are quite 

 distinct. The mesogastric furrow is moderately deep, slightly 

 continued on to the front but not backwards, so that the 

 gastric region is not subdivided. The epigastric lobes that 

 are little prominent and confluent backwards with 

 the protogastric regions, are two small areolets covered 

 with oblique wrinkles and directed somewhat obliquely, 

 but sometimes they are scarcely defined ; they are together 

 a little less broad than the front. On each side of the 

 epigastric lobes the anterior boundary of the protogastric 

 regions appears more or less distinctly wrinkled. The flat- 

 tened cardiac region, somewhat broader than long, is boun- 

 ded posteriorly by a shallow transverse depression from 

 the intestinal area that is likewise much broader than long 

 and covered with very fine transverse wrinkles, but the 

 cardiac area is confluent, on each side, with the posterior 

 branchial one. The urogastric lobules are small, rugose and 

 not contiguous to one another. 



The front is strongly deflexed downward and raised 

 into two very slightly convex eminences, that are defined 

 laterally from the upper margin of the orbits by a well- 

 marked furrow, which curves laterally towards and issues 

 into the quite shallow post-orbital groove or depression 

 between the orbits and the protogastric regions. The upper 



Notes from the Leyden Museum, "Vol. XX.I. 



