NATURAL SCIENCES OF PHILADELPHIA. 323 



There may have been another fold on the columella, but, from the condition 

 of the specimens, I could not decide certainly. From the imperfect condition 

 of the specimens of this magnificent species, I could not determine positively 

 in which of the two above genera to place it. Its general form seems to 

 relate it most nearly to the Athleta group of the Volutes. 



Length, (broken) 2-75 in. Width of body whorl, 2-2 in. Length of mouth, 

 (broken) 2 "25 in. 



V. K a n e i . Shell small, fusiform. Spire elevated ; whorls 3 3, round- 

 ed. Body whorl broadly rounded above, tapering below. Mouth elongate, 

 acute above, slightly widened in the middle and narrowed below. Columella 

 with two small oblique folds, the posterior one almost linear. Surface of 

 casts perfectly smooth ; but on casts of the surface, I have found impressions 

 of a few rather prominent longitudinal ribs, crossed by numerous distinct re- 

 volving lines. I have not ascertained how far these extend over the surface, 

 having traced them only on the upper third of the whorls. 



Length, somewhat broken 1-1, probably 125 or 1-3. Width of body whorl, 

 55. Length of mouth, -7, perhaps when perfect, 75 or *8 in. 



From N. J. My Coll., named after Mr. Chas. Kane of N. J., an enthusiastic 

 and able collector, and one to whom I am indebted for some valuable addi^ 

 tions to my collection. 



This species resembles most nearly V. bella, nobis, but is a shorter and 

 more robust shell, with the upper volutions diminishing more rapidly in size. 



V. mucronata . Shell turrited. Spire high ; whorls four or five, rounded 

 and increasing very gradually in size. Aperture elongate, narrow, acuminate 

 above. Columella with three small folds, the anterior, largest; other two 

 linear. Surface marked by broad longitudinal ribs and small distinct re- 

 volving lines. 



Length of most perfect specimen (three last whorls), 1-3 in. Width of 

 body whorls "55 in. Length of mouth about -75 in. (imperfect). Two casts 

 in my collection; locality Crosswicks, N. J., from Dr. Slack. Of the same 

 type as V. Texana and V. nasuta, this species differs from both in the much 

 more gradual increase in size of the whorls, there more rounded form and 

 the shorter mouth. This character will serve to separate it without doubt from 

 the latter, and the additional character of the very few and delicate columella 

 folds renders the distinction from the former certain, independently of the great 

 difference in shape. 



Teredo Linn. 



5, G. Uperotis Guett. ? 



T. contorta. Tube short, knotted, increasing rapidly and irregularly in 

 size, and bent at two right angles in the only specimen 1 have seen. Shell 

 gibbous, beaks incurved ; umbones prominent, in cast, and marked by a deep 

 angular groove, extending to the margin and inclined a little anteriorly. An- 

 terior basal margin excavated by a deep angular notch, occupying about half 

 the longitudinal diameter of the shell, and joining the basal margin by a short 

 curve at or near the point where the umbonal groove reaches the edge. The 

 extreme anterior end is buried in the matrix, but, from the direction of the 

 surface lines, is probably acuminate. Posterior end produced rounded and 

 slightly gaping. Surface marked by fine lines at the anterior end, which ex- 

 tend posteriorly, and end abruptly in a line with the posterior edge of the 

 emargination. From this line extends a series of much finer lines running 

 transversely with the direction of the first, being parallel with the edge of the 

 emargination, and abruptly curving posteriorly, immediately in advance of the 

 umbonal groove, across which are larger and less numerous lines, these again 

 became smaller, being about as large, but less distinct than the most anterior 

 set, and run parallel with the basal and posterior margins. 



1861.J 



