Ig PEOCEEDINGS OF THE NATIONAL MUSEUM vol.66 



TURRIS, aff. T. ALBIDA Perry 



There are from stations 8302, 9212, 9219, 9220, and 107146 (U. S. 

 Nat. Mus. Cat. No.), Ditriipa bed (Guppy), several either young or 

 poorly preserved specimens apparently belonging to the group of 

 Turris alhida Perry. The condition of preservation hardly justifies a 

 specific comparison. 



Genus DRILLIA Gray 



DRILLIA CONSORS BULLBROOKI, new subspicies 



Plate 3, fig. 10 



Drillia consors Maury, Bull. Amer. Paleont., vol. 10, no. 42, p. 190, pi. 32. fig. 10, 

 1925. 



Shell rather small, moderately stout, fusiform, with five remaining 

 whorls, nucleus decollate ; whorls slightly inflated, anterior ones more 

 so than posterior; weakly constricted at the suture; spiral sculpture 

 stronger than axial. Suture shallowly grooved and wavy. Anal 

 fasciole wide, shallow, and sculptured with three rounded spiral 

 threads. Axial sculpture (20 on the penultimate whorl) on the 

 spire whorls consists of slightly protractive, nodulous at the inter- 

 sections of the spirals, ribs separated by interspaces one-half their 

 width and extending from the anal fasciole forward to the suture. 

 Spirally sculptured with a strong keel just in front of the suture and 

 two or three microscopic threads on the lower border of the suture, 

 and in front of the anal fasciole with four nari"OW prominent bands 

 separated by interspaces of about equal width in which there are two 

 fine microscopic threads. Base similarly cancellate-sculptured ex- 

 cept that there are one or two more microscopic threads in the inter- 

 spaces between the spiral bands. Outer lip broken away at the 

 margin. Inner lip covered with callus, a heavier patch being just 

 underneath the suture. Pillar nearly straight; .slightly concave 

 medially. 



Dimensions: Type (U. S. Nat. Mus. Cat. No. 352628) measures 

 Height IS mm. ; greatest diameter 6 mm. 



The type locality of Drillia condors Sowerby is Santo Domingo. 

 This differs from the subspecies here described in possessing more 

 spiral threads, and the absence of secondary microscopic spirals and 

 nodules at the intersection of the axials and spirals. One specimen 

 at each station, 8558 and 8668, collected from the Baitoa formation 

 in the Dominican Republic and designated " Drillia consors Sowerby 

 n. sub. sp. a," ^ apparently belongs to the same new subspecies as here 

 described. 



Pleurotojna alesidota^ var. magna Bose, from Paso Real cerca de 

 Tuxtepec, Oaxaca, resembles the new subspecies but the sculpture of 



* Woodriiis, W. r., and MansfieJd, W. C, A geological i-econnaissance of the Dominican 

 Republic, Geol. Survey Mem., vol. 1, p. 113, 1921. 



