BARTSCH: NEW ENGLAND PYRAMIDELLIDAE. 89 
moderately large, irregularly ovate; posterior angle acute; outer lip 
thin; columella straight, slightly revolute. 
The specimen described and figured, cat. no. 203,770 U. S. N. M., 
comes from Wood's Holl, Mass. It measures: length, 3.8 mm.; 
diameter, 1.4 mm. 
Turbonilla (Pyrgiscus) buteonis new species. 
PI. 12, figs. 17, 28, 34. 
Shell broadly elongate- conic, yellowish white. Nuclear whorls two, 
moderately large, depressed helicoid, having their axes almost at 
right angles to that of the succeeding turns in the first of which they 
are about one fifth immersed. Post-nuclear whorls weakly rounded, 
crossed by strong, rounded, axial ribs of which 16 occur upon the 1st 
and 2d; 18 on the 3d, 4th, and 5th; 20 on the 6th and 7th; 22 upon 
the 8th, 9th, and the penultimate turn. Intercostal spaces about one 
and one half times as wide as the ribs, ornamented with four deep 
pits and 17 fine incised lines between the sutures. The deep pits are 
one peripheral, two, a median; four about half way between the 
median and the summit of the whorls, while three is a little nearer to 
four, than to the median. The fine lines are disposed in the following 
manner: seven between the peripheral and median pits; one between 
the median and third pit; and nine between the fourth pit and the 
summit of the whorl. The fine lines are of orange color. Periphery 
and base of the last whorl well rounded, crossed by the feeble con- 
tinuations of the axial ribs, which disappear before reaching the um- 
bilical area. Base marked by 14 slender irregularly spaced incised 
spiral lines. Aperture moderately large, subquadrate, somewhat 
effuse at the junction of the outer and basal lip, both of which are 
thin and show the external sculpture within; columella slender, 
almost straight, oblicjuely placed, and slightly revolute. 
The type, cat. no. 203,771 U. S. N. M., comes from Wood's Holl, 
Mass. It has eleven post-nuclear whorls and measures: length, 
6.3 mm.; diameter, 1.9 mm. 
We have examined the following specimens: — 
No. of U.S.F.C. Depth Temp. Disposition of 
Cat. no. spec. sta. Locality. (fms.). material. 
94,827 1 Massachusetts Bay, Mass. U. S. nat. mus. 
203,771 2 Wood's Holl, " " " 
3 " " " Winkleycoll. 
