140 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXI. 



The following table gives measurements of the t3^pe and 14 speci- 

 mens: 



Measun'meids of Holosplra {Boslrichocentmm) tamanUpensis. 



" Type. 

 HOLOSPIRA (BOSTRICHOCENTRUM) CIONELLA Pilsbry. 



The collection of the U. S. National Museum contains one specimen 

 of this species, Cat. No. 173848, presented by Dr. H. A. Pilsbr}^ and 

 collected by J. H. Ferris, at Fort Bowie, Arizona, the type locality. 

 It has 13 whorls and measures: Length, 12.5 mm.; diameter of tenth 

 whorl, 3.7 mm.; diameter of penultimate whorl, 3.6 mm. 



HOLOSPIRA (BOSTRICHOCENTRUM) COCKERELLI Dall. 



The unique type of this species, Cat. No. 173845, U.S.N.M., was 

 found by O. B. Metcalfe in the debris of the Rio Grande, at Mesilla, 

 Sierra County, New Mexico, and donated to the Mu.'^eum ])y Prof. T. 

 D. A. Cockerell. It has 13| whorls and measures: Length, 12.8 mm.; 

 diameter of tenth whorl, 3.8 mm.; diameter of penultimate whorl, 

 3.6 mm. 



HOLOSPIRA (BOSTRICHOCENTRUM) REGIS Pilsbry and Cockerell. 



There are two specimens (topotypes) in the collection of the U. S. 

 National Museum, Cat. No. 185388, collected by O. B. Metcalfe, 

 near Kingston, Sierra County, New Mexico, and donated by Prof. 

 T.. D. A. Cockerell. One of these is not quite perfect; the perfect 

 individual has 13 whorls and measures: Length, 11.1 mm.; diameter 

 of tenth whorl, 3.4 mm.; diameter of penultimate whorl, 3.2 mm. 



HOLOSPIRA (BOSTRICHOCENTRUM) CHIRICAHUANA Pilsbry. 



There are two lots of this species in the U. S. National Museum 

 collection; one. Cat. No. 173847, U. S. N. M. , contains 6 specimens col- 



