268 PROCEEDINGS OP THE NATIONAL MUSEUM. vol. 42. 



TURBONILLA (PYRGOLAMPROS) GLORIOSA, new species. 



Plate 35, fig. 9. 



Shell very slender, elongate-conic, wax-yellow, with a broad, brown 

 band which on the early and the later whorls extends over the ante- 

 rior half, between the sutures, while on the middle ones it covers 

 fully two-thirds of that space. Nuclear whorls decollated. Post- 

 nuclear whorls flattened in the middle, rounding moderately toward 

 the summit, and the periphery, marked by strong, regular, retractive, 

 axial ribs, of which 14 occur upon the second of the remaining turns, 

 16 upon the third, 18 upon the fourth to sixth, 20 upon the seventh 

 and eighth, while upon the remaining volutions they become 

 much enfeebled and less regular. These ribs upon the middle whorls 

 are strongest in the middle, slopmg gently toward the summit and 

 the periphery, the slope at the summit lending them a shouldered 

 effect. Intercostal spaces deeply impressed, about as wide as the 

 ribs. Sutures strongly impressed. Periphery of the last whorl some- 

 what inflated, well rounded. Base moderately long, well rounded, 

 marked by the feeble continuations of the axial ribs. Entire surface 

 of spire and base crossed by numerous very fine, spii'al striations. 

 Aperture subquadrate; posterior angle obtuse; outer lip thin, show- 

 ing the banding of the exterior within; inner lip ver}^ oblique, slightly 

 curved, and revolute, with an obscure fold at its insertion; parietal 

 wall glazed with a very thin callus. 



The unique type of this species (Cat. No. 211551, U.S.N.M.) was 

 dredged by Mr. Kelsey in 12 fathoms, outside San Diego, Cahfornia. 

 It has lost the nucleus and probably the first post-nuclear turn ; the 

 11 remaining measure : Length, 8.3 mm.; diameter, 2 mm. 



The present species reminds one strongly of Turbonilla {Pyrgolam- 

 pros) chocolata Carpenter. It has the same beautiful general colora- 

 tion, but differs in having much fewer ribs and in having these shoul- 

 dered, while m chocolata they are perfectly straight to the summit. 

 In the present species the ribs are much more strongly retractive; in 

 chocolata they are only slightly so. The present species is also 

 smaller and much more slender. 



This species foUows Turbonilla (Pyrgolampros) chocolata in the key. 



TURBONILLA (PYRGOLAMPROS) MACOUNI Dall and Bartsch. 



Plate 35, fig. 11. 



Turbonilla {Pyrgolampros) macouni Dall and Bartsch, Dep. Mines, Geol. Surv., 

 Canada, 1910, pp. 15-16, pi. 1, fig. 9. 



Shell, large, very broadly elongate-conic, pale wax-yellow, with 

 three chestnut bands. The first of these bands extends over the 

 posterior fourth of the whorls between the sutures, and is less strongly 

 colored than the other two which are very pronounced, about half as 



