76 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



upper surface. The anterior margin of the propodi is covered with 

 sliort ))lack bristles. The dactyli have six rows of the same, in which 

 the spinules are almost hidden. 



DiiJienslo)is. — Length of male 13.5 mm.; width 17 mm.; fronto- 

 orl)ital width 11.7 mm.; width of front 6.2 mm. Length of largest 

 male 16 mm.; width 19.5 mm. 



Localities. — Hilo, Hawaii; H. W. Henshaw, collector (types, Cat. 

 No. 22857). Kahului, Maui; R. C. McGregor, collector. Oahu, GaJa- 

 thea expedition; received from Copenhagen Museum, labeled " C cine- 

 reiis Dana.'' 



This little crab is not rare in the Hawaiian Lslands. It has been 

 found by Mr. Henshaw under stones at high-water mark, associated 

 with C granaJatus Dana, which may be distin- 

 guished by its arcuate side margins and the dense 

 granulation of the anterior two-fifths of the cara- 

 pace. C. dnereus Dana, of which there are speci- 

 mens in the U. S. National Museum from San 

 Lorenzo Island, Peru, has a narrower carapace, and 

 the abdomen of the male wider and of a different 

 form (see Dana's figure). The new species ap- 

 FiG. 2.— cyclograpsus proaches nearest to- C^ parmdus de Man " from Atjeh, 

 HENSHAwi, ABDOMEN \y^i ^hc f rout Is wldcr in our species, the upper 

 margin of the orbit is not directed backward, the 

 merus of the maxilliped is longer, and the sixth segment of the abdo- 

 men of the male shorter. 



OZIUS HAWAIIENSIS, new species. 



Length of carapace four-sevenths of width. Carapace convex both 

 in a longitudinal and transverse direction. A narrow depressed area ; 

 extends around the front and antero-lateral region as far as the • 

 penultimate tooth. Surface irregularly punctate; the anterior third is • 

 roughened with depressed granules and irregular pits. The anterior 

 part of the mesogastric region is very narrow and marked b}^ deep > 

 grooves. There is a shallow gastro-cardiac suture; otherwise the 

 boundaries of the regions are not indicated. On either side are two 'i 

 shallow pits disposed obliquely in front of the middle. The fronto 

 orbital w^idth is three-sevenths of the entire width. The front is about: 

 as wide as the orbits, and so defiexed that its real margin is not visible 

 in a dorsal view; the margin is four-lobed, the inner lobes larger than i 

 the outer and separated from each other by a deeper and narrower 

 sinus than from the outer. The inner orbital tooth is well marked. 

 Antero-lateral margin cut into four teeth; the first is almost obliter- 

 ated in the adult, being merged with the orbital angle; its outer 

 margin is longer than that of the second. The second and third are 

 of equal length, the second most prominent. 



«Zool. Jahrb., Syst., IX, 1896, p. 350; 189S, pi. xxxii, fig. 42. 



