NO. 2288. NEW MOLLUSKS OF THE FAMILY TURRITIDAE—DALL. 29 

 MONIUOPSIS HALCYONIS Dall. 



Plate S, fig. 1. 



Turris (Siircula) halcyonis Dall, Proc. U. S. Nat. Mus., vol. 34, No. 1610, 

 p. 248, June 16, 1908. 



Range. — Monterey to San Diego, California. 



SUAVODRILLIA WILLETTI, new species. 



Shell small, white, with a pale operculum with apical nucleus; 

 nuclear whorls translucent white, glassy, inflated, about one and a 

 half in number, then gradually passing into the reticulate sculpture 

 of the five or six subsequent turns ; suture appressed with one or two 

 close-set prominent spiral threads in front of it; whorls sloping for- 

 ward flatly from these threads to an angle at the shoulder forming 

 the periphery, this part of the whorl minutely spirally threaded; 

 other spiral sculpture of (on tlie base about five) strong threads with 

 wider interspaces containing minor threads all merging toward and 

 on the canal into a series of subequal close-set threads; the anal 

 fasciole has its deepest part at the shoulder angle, but the arcuate 

 incremental lines on the whorl behind the angle indicate that it was 

 when complete wide and shallow; axial sculpture of (on the penulti- 

 mate whorl about 16) strongly protractive short ribs starting at the 

 shoulder, which they slightly nodulate, and reaching to the suture, 

 but obsolete on the last whorl and not reaching much beyond the 

 periphery; outer lip thin, sharp; inner lip erased; pillar short, 

 obliquely attenuated in front ; canal short, distinct, slightly recurved. 

 Height of shell, 10; of last whorl, 5; diameter, 4.5 mm. Cat, No. 

 216409. U.S.N.M. 



Being e. — Forrester Island, southeastern Alaska, G. Willett. 



This shell belongs to the group of which '"'' Drillia'''' kennicottii 

 Dall, is the most conspicuous example and which serves as the 

 typical species. 



BELLASPIRA MELEA, new species. 



Plate 19, fig. 8. 



Shell stout, rose pink, with a whitish band in front of the suture, 

 with a blunt smooth nucleus of about one whorl and about five sub- 

 sequent whorls; suture appressed, obscure, spiral sculpture appar- 

 ently absent; axial sculpture of (on the last whorl six) strong, stout, 

 wavelike ribs, continuous up the spire, with wide interspaces, and 

 practically vertical; the surface appears to be smooth but as the 

 specimen is slightly beach worn some minute sculpture ma}^ have 

 disappeared; the suture is undulated by the ribs, there is no anal 

 fasciole perceptible ; anal sulcus narrow, short, with a subsutural cal- 

 lus in front of it; outer lip thin, sharp, with a marked varicose swel- 

 ling behind it ; there are no internal lirae ; inner lip callous, smooth ; 



