112 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



EUCALODIUM (OLIGOSTYLUS ) SPECIOSUM STREBELI von Martens. 



There is one specimen in the collection of this form, Cat. No. 

 10828, U.S.N.M., which has 9 whorls and measures: Length, 44.6 mm; 

 diameter of antipenultimate whorl, 11 mm. The locality given is 

 Veracruz?, Mexico. 



EUCALODIUM (OLIGOSTYLUS) CEREUM Strebel. 



The collection contains one specimen of this species, Cat. No. 

 25033a, U.S.N.M., labeled Mexico. It has 9 whorls remaining which 

 measure: Length, 37.3 mm.; diameter of antipenultimate whorl, 10.8 

 mm. The tine spiral striations between the sinuous, oblique, closely 

 placed thread-like rililets are well marked. 



ANISOSPIRA DALLI von Martens. 



There are twelve adult shells and three apices of this species in the 

 collection, all but one collected by E. W. Nelson :it the type locality, 

 Huilotepec, Oaxaca, Mexico. One specimen domted by Bland, Cat. 

 No. 58055a, U.8.N.M., is said to have come fiom near Mazatlan. 

 The ten perfect specimens from the type locality neasure: 



Measurements of Anisospira dalli. 



a Type. 



Two of the decollated apices measure: 



Apex measurements of Anisospira dalli. 



