4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



The early whorls are eroded and so do not reveal their sculpture. 

 Those remaining have a series of heavy knoblike tubercles separated 

 by spaces about as wide as the knobs, at the shoulder. Of these knobs 

 1 1 are present upon the last turn. The summit of the turns is marked 

 by 6 low rounded spiral threads which vary in width and are separated 

 by well-impressed lines. In addition, the spire is marked by well- 

 developed incremental lines. The posterior half of the body of the 

 last whorl is marked by rather wide and moderately deep grooves, 

 which here separate low rounded spaces of double their width. From 

 the middle anteriorly the relative width of the spiral grooves and 

 cords changes, i. e., the cords become narrow and more elevated, while 

 the spaces between them widen and appear less incised, but all these 

 spaces, whether the narrow incised grooves of the posterior part or 

 the wider anterior fields, are crossed by numerous, strongly raised, 

 hairlike threads, which extend feebly upon the spiral cords and which 

 are more distantly spaced on the posterior portion than on the middle, 

 and become decidedly crowded on the anterior third. Fourteen of the 

 raised spiral bands are present between the shoulder and the columella. 

 The columella bears 7 closely approximated, strong spiral cords. 

 Aperture narrow, decidedly channeled anteriorly, scarcely so at the 

 posterior angle ; outer lip thin. 



The type, U.S.N.M. no. 472854, measures: Length, 15.3 mm.; 

 greater diameter, 9.6 mm. ; lesser diameter, 8.5 mm. It was collected 

 on Clipperton Island on rocks along the shore, south of the landing 

 place. Two additional specimens bear U.S.N.M. no. 472549. 



This species is a member of the Conns miliaris complex. It is 

 darker than that species, the spiral grooves are more pronounced, 

 and the nodulation is heavier. 



CONUS MAGDALENENSIS, n. sp. 



Plate 1, figs. 5. 9 



Shell of medium size, with rather elevated spire with its lateral 

 margins slightly concave and the sides almost straight. The narrow 

 whorls on the spire are marked by alternating zones of dark brown 

 and the. flesh-colored ground color. The body of the whorls carries 

 these alternating axial areas to the tip of the columella, but with an 

 interruption produced by a spiral band of the ground color which 

 encircles the turns almost at the middle between the shoulder and base. 

 The dark chestnut-colored areas are in the form of broad fulgurations, 

 .some of whose points join those of adjacent zones. They are about 

 as wide as the lighter areas separating them. Judging from the rem- 



