Ni>. 1309. 



NEW HA WAIIAN CRABS— R A THE UN. 



77 



The subhepatic and subbranchial regions are roughened near the 

 anterior and hiteral niarg-ins of the carapac-e. A ridg-e runs from 

 near the posterior end of the lirst antero-lateral tooth to the lower 

 maro-in of the or1)it. 



Fig. 4.— Ozius hawaiiensis, margin of front, 



X6t. 



Fig. 3.— Ozius hawaiiensis, female, >; li. 



Chelipeds unequal (in the female). The merus has a subterminal 

 notch on the upper margin. The outer surface of the carpus and 

 upper surface of the manus are roughened with irregular and mostly 

 transverse pits, the intervening ridges deeply punctate. The carpus 

 has two blunt inner teeth, one below the other. The lingers are black', 

 marked with a few slightly im- 

 pressed lines of pits; the pollex is 

 wider than the dact3dus, which is 

 considerabl}' longer than the upper 

 margin of the palm. The fingers 

 of the larger hand gape a little; each has a larger tooth near the base. 

 The ambulatory legs are sparsely hairy. 



Dimensions. — Length of female with ova 16 mm.; width 28 mm.; 

 fronto-orbital width 12.5 mm.; width of front 6 mm. 



Tyjje locality. — Hilo, Hawaii, under stones at high- water mark; 

 H. W. Henshaw, collector (Cat. No. 22852). Only females and 3'oung 

 have been secured. 



Oziits hmvaiiensls differs from allied species, such as (). ven'eauxii 

 Saussure and O. tr'vneatvs Milne Edwards, in lacking a sharp ridge 

 on tl;e carapace, extending obliquely inward anct forward from the last 

 or penultimate antero-lateral tooth. 



