58 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 56. 



rounded threads ; axial sculpture of (on the last whorl including the 

 terminal varix 10) rounded, rather strong ribs, extending from suture 

 to canal and usuall}' vertically continuous up the spire, the shoulder 

 hardly indicated, the spiral sculpture passing over the ribs without 

 nodulation ; the interspaces of the reticulation usually darker colored 

 than the threads; aperture narrow, elongated, with a large rounded 

 and conspicuous anal sulcus; outer lip varicose, thick, sharp edged, 

 internally smooth; inner lip smooth not callous; canal short, wide, 

 hardly differentiated from the aperture. Height of shell, 7; of last 

 whorl, 4; diameter, 2.5 mm. Cat. No. 106488, U.S.N.M. 



Range. — Scammon Lagoon, Lower California, on a sand beach be- 

 tween tides; Henry Hemphill. 



PHILBERTIA TELAMON, new species. 



Plate 18, fig. 5. 



Shell minute, snow white, polished, with a dark brown narrow 

 band in front of which the suture is laid; nucleus of one and a half 

 white smooth whorls and four and a half strongly sculptured subse- 

 quent whorls; suture distinct, not appressed; spiral sculpture of on 

 the first two whorls one, on the next two, two strong white rounded 

 cords on the periphery and a brown one at the suture, somewhat 

 swollen at their intersections with the ribs and separated by a nar- 

 rower interspace; on the last whorl there are in front of these three 

 or four similar but slightly smaller white cords and a few small 

 threads on the canal; axial sculpture of (on the last whorl about 

 ten) rounded ribs extending over the whorl but not continuous up 

 the spire and with narrower interspaces ; outer lip strongly varicose ; 

 anal sulcus distinct, small, shallow, the whorl somewhat constricted 

 at the beginning of the canal; pillar short smooth, canal verj^ short 

 but distinct. Height of shell, 4; of last whorl, 2; diameter, 2 mm. 

 Cat. No. 73927, U.S.N.M. 



Range. — Gulf of California, Stearns collection. 



This is a very distinct little species, recalling in color some species 

 of THforis. 



PHILBERTIA AEGIALEA, new species. 



Plate 18, fig. 8. 



Shell small, yellowish white, slender, acute, with a small smooth 

 nucleus of a whorl and a half and four and a half subsequent sculp- 

 tured whorls; suture distinct, not appressed, undulated by the ends 

 of the ribs; whorls with a prominent shoulder; spiral sculpture of 

 small sharp close-set threads covering the whole surface most promi- 

 nent in the interspaces between the ribs and given a frosty appearance 

 by the intersection of close fine sharp slightly elevated incremental 

 lines; other axial sculpture of (on the last whorl eight) strong rounded 

 ribs with wider interspaces extending to the canal from the preceding 



