^"isof)^'] PH()CEEl)IN(iS OF THE NAl'IONAI. MUSEUM. 237 



for their entire length, the tips liooke*!. Tin- lingers arc brow ii and 

 mottled, the color extendiiii;' I'ai- hack on tlie palm, l>otIi inside, and onf. 

 Ambulatory lei;s flattened, crested, hairy; propodal joints broad, about 

 as long as the dactyls. 



Small specimens have the carai)a('e and ui»]>er ]Mtrlion (»!' llie hands 

 rougher and the ciiri)us very deejdy eriKled. 



One specimen in the AlbatroHs collection, Avithout label, is associated 

 with XanthDflrs iaylorl and rdchi/firap.sHs cras.sijx.s. A seiies of speci- 

 mens loaned by the J'cabody JMuscum of Yale University are from San 

 Biego, California. 



Cycloxanthus califoruieusis. 



Carapace slightly convex, tlattened bt^hind, ]»unctate and anteriorly 

 rugose, Avider than in rittalus; regions separated by shallow grooves 

 and subdivided as in vUtattis, but less distinctly. Anterolateral teeth 

 nine, besides the postorbital; the tirst depressed, lobate, the last two 

 small, tlie last one being absent in small specimens; margin thick, tt'.eth 

 short, subacute. Front produced, more advanced in the middle than at 

 the orbits, with a deep, closed median lissure; lobes each with a shal- 

 low sulcus, in some specimens almost straight. Abdomen broader than 

 in vitfatnsj the second and i)euultimate joints noticeably shorter. 

 Chelipeds with carpus and upper i)artothand rugose; cari)us with two 

 blunt teeth at the inner angle; hands rather long, with ui)per and 

 lower margins subparallel; lingers irregularly toothed, not ga]»ing, 

 grooved, light brown with white tips. Ambulatory legs hirsute on 

 margins. 



Length 24.5, width 37 millimeters. 



KECORl) OF SPECIMENS EXAMINED. - 



Catahna. Harbor, California; beach (17509); 30 to 40 fathoms, sandy mud (17508); 

 W. H. Dall. 



San Diego, California; J. G. Cooper (17536); C. K. Orcntt (174'J9); If. Hemphill 

 (17531). 



Guadalupe Island, Lower California; U. S. Fish (!omuussiou steamer AlbatroHa, 

 188'J (17395). 



This species is nmch like vittatKn, but ditfers from it in the shorter, 

 blunter anterolateral teeth, in the absence ot hair on the margins, in 

 the narrower hands, as well as in the characters mentioned above. 



Lockington has described a species, Xanilio novem-clcntafusj from 

 San Diego and Lower California (Proc. Cal. Acad. Sci., pp. 3L* and 9!), 

 1870), which he later (in annotations) decides to be identical with 

 Stimpson's vittttfns. Lockington says that the Lower California si»eci- 

 mens are narrower than those from San Diego, lie ])robably had two 

 species, but there is nothing in his description to indicate that histyi)e 

 is identical with the species described above, excepting the broad 

 carapace and the locality. 



