NO. 6 DECAPOD AND OTHER CRUSTACEA SCHMITT II 



observed are no more than of subspecific rank. More material from 

 both coasts of America is much to be desired. It is probable that 

 Lockington's record of three specimens of C. typa from La Paz in 

 the Gulf of California is based upon specimens identical with those 

 from the Tres Marias Islands and Socorro. 



Petrolisthes near cinctipcs Stimpson ij 1 



Calcinus obscurus Stimpson 3 



Coenobita compressus Guerin 1 



Grapsus grapsus (Linnaeus) 1 c? 



Leptodius cooksoni Miers 1$ 



Ozius perlatus Stimpson 1^ 3$ 



Socorro Island, Mexico, July 20 (sta. 7-38) on land, back of 

 beach under rock. 



Gccarcimts plana! us Stimpson 1 



Socorro Island, Mexico, July 20 (sta. 8-38), boat dredge, two 

 hauls, 7-8 fathoms, sandy bottom, from off landing beach toward 

 rocky point forming east side of cove where landing is located. 



Callianassid 1 fragment 



Clibanarius panamensis Stimpson 1 



Clipperton Island (French possession), July 21 (sta. 9-38), shore 

 collecting at Clipperton on rocks to south of landing place (on north- 

 eastern shore of atoll). 



CRANGON HAWAIIENSIS CLIPPERTONI, n. subsp. 



Holotype. — Largest of eight specimens, a female approximately 

 13 mm. long, upper margin of palm of large hand 4.4 mm., chela, 

 over all, 5.6 mm. (U.S.N.M. no. 77789). 



Description. — This apparently new form differs but slightly from 

 the description and figures given by Edmondson for his C. hawaiiensis 

 (Bull. Bishop Mus., No. 27, p. 14, fig. 2, 1925) ; so slightly, indeed, 

 that I asked Dr. Edmondson to reexamine his unique type in the light 

 of the differences that I did discover. 



In our Clipperton Island type and the specimens accompanying it 

 the inner side or surface of the larger chela is smooth, as in the 

 species proper; the outer side also appears smooth on casual inspec- 

 tion, but when excess moisture is removed, the presence of two not 

 very conspicuous longitudinal grooves is revealed on the outer face 



