1905.] NATURAL SCIENCES OF PHILADELPHIA. 257 



Neither is much Hkc H. remondi conchologically; but further informa- 

 tion on both H. remondi and Leptarionta is needed. 



Sonorella hachitana (Dall). PI. XVII, figs. 1-8. 



Epiphragmophora hachitana Dall, Proc. U. S. Nat. Mus., XVIII, p. 2, 1895; 



XIX, p. 338. 

 Sonorella hachitana Dall, Pilsbry, Proc. Acad. Nat. Sci. Phila., 1900, p. 557 



(as type of Sonorella). 

 S. hachitana Dall, Bartsch, Smiths. Misc. Coll., XXXXVII, p. 190, PI. 31. 



fig. 2 (shell), and PI. 29 (apex), 1904. 

 Probably includes as subspecies <S. ashmuni Bartsch, I. c, p. 190, PI. 31 ^ 



fig. 5 ; iS. nelsoni Bartsch, I. c, p. 191, PI. 31, fig. 3, and S. goldmani 



Bartsch, /. c, p. 192, PI. 32, fig. 6. 



This is a widely distributed species in central and southeastern 

 Arizona and southwestern New Mexico. It varies in size, degree of 

 depression, width of umbilicus, size of aperture, and in color-tone; also 

 in some measure in the sculpture ; but so multifarious are the connect- 

 ing links that I do not now see my way to support the dismemberment 

 proposed by Mr. Bartsch. It will doubtless be found useful to recog- 

 nize by name a half-dozen or more local races. 



The internal anatomy of the types, from Hacheta Grande Mountains, 

 Grant county. New Mexico, is not known, nor have topotypes been dis- 

 sected. I have been able, however, to examine several specimens 

 from other localities, which conchologically differ very little from the 

 original lot of hachitana, some of which are before me. 



The name "hachitana" seems to be a perverted form of that of 

 the locality, "Big Hatchet." The Spanish name, locally in use, and 

 appearing on most maps, is "Hacheta Grande." 



1. Filmore Canyon, Organ Mountains, New Mexico (PL XVII, figs. 

 7, 8). A single specimen sent by Prof. Cockerell measures alt. 13.8, 

 diam. 23.5 mm., umbilicus 3.2 mm. The aperture is ample, 11.8 x 13.3 

 mm., as in the large shells from Florida Mountains. This specimen 

 has been referred by Mr. Bartsch to his S. nelsoni, which measured 

 25.5 X 13.4, umbilicus about 4 mm., aperture 11.1 x 12.8 mm., and is 

 said to differ from hachitana in being "more depressed and has a larger 

 aperture." 



The genitalia show that the specimen, while full grown, is not quite 

 mature, the male organs especially being thread-like. The sperma- 

 theca is globular, on a very slender duct. The specimen is No. 71,413, 

 A. N. S. P. It has been referred by Mr. Bartsch to S. nelsoni. 



The jaw (PI. XXIII, fig. 19) has eight narrow equal ribs. 



2. Florida Mountains, near Deming, Luna county. New Mexico. 

 Mr. Ferriss states that these specimens were collected in a very barren, 

 arid locality. Very large specimens were taken measuring 28.3 x 15.9 



17 



