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T. KUKUDA : 



the posterior margin. The median carina is very faintly marked. The 

 anterolateral corners are angular and have a minute denticle directed 

 antero-lateral, the postero-lateral being evenly rounded and produced. 

 No projection is present on the median line of the posterior margin. 



The submedian carinae upon the exposed thoracic segments are 

 divergent posteriori}-. The fifth segment bears two processes on the 

 lateral margins ; the anterior one being acute and straight directed 

 antero-laterally downward, while the posterior is much shorter and 

 blunt. The lateral margins of the next two segments are bilobed, the 

 posterior lobes being much larger and triangular in shape. 



The first five abdominal segments bear four pairs of carinae but 

 no median tubercles. The submedian carinae are divergent posteriorly 

 on all these segments and end in spines on the fifth. All the other 

 pairs of carinae, except the first two of the intermediate and the first 

 of the lateral, terminate in spines. There are three pairs of carinae 

 upon the sixth segment all ending in spines and the submedian being 

 parallel. 



The telson is nearly square in shape and its length occupies about 

 ^ the total length. The dorsal surface is marked on each side with 

 rows of shallow pits running outward and backward. Three pairs of 

 spines are present on the margin besides the anterior lateral carinae 

 which terminate in a short spiniform process. The submedian and 

 the lateral spines are divergent, while the intermediate convergent 

 posteriorly. All the carinae upon the marginal spines as well as the 

 median crest are narrow and without traces of dilation. The secondary 

 denticles are 3-4, 9, 1 in number. A shallow fissure is present on the 

 posterior median line, the denticle adjoining which bears a row of 

 minute spinules or denticles of the third order on the margin. 



The basal prolongations of uropoda have a large tooth on the 

 outer margin of the inner spine. The ophthalmic segment is exposed 

 dorsally. The eyes are extraordinary large with the corneal axis 

 almost half as long as the carapace. There is a process on the inner 



