80 THE NAUTILUS. 



LEPTINARIA LIVINGSTONENSIS, n. sp. 



The shell is imperforate, oblong-conic, the length twice the 

 diameter, pale yellow, composed of 6 moderately convex whorls. 

 Apex rather obtuse, surface glossy, coarsely but weakly striate. 

 The sharp outer lip is strongly arched forward at its upper 

 third. Columellar plait strong, dividing the columellar margin 

 into two arcs, the lower one slightly shorter and deeper. Par- 

 ietal lamella present in the embryos of 1| whorls. It is quite 

 strongly developed in some shells of 6 mm. long, wanting in 

 others. In older shells it becomes very low, and not quite one- 

 fourth of a whorl long; or in others it disappears entirely. 



Length 9.5, diam. 4.7, aperture 4.5 mm. (lamella low). 



Length 11, diam. 5, aperture 5 mm. (lamella minute). 



Found in rubbish about the city of Livingston, Guatemala, 

 with Subulina octona, taken February 19, 1913. This shell is 

 about the same size as L. tamaulipensis, but differs from that 

 species by having a parietal lamella and an imperforate umbil- 

 ical region. The last whorl is less enlarged than in L. lamettata, 

 L. elisse or L. convoluta, which resemble this species in being 

 imperforate with a lamellate parietal wall. 



The small lot taken in 1913 seemed divisible into two ppecies, 

 according to whether a parietal lamella was present or not, but 

 in the abundant series collected on the second trip, it appears 

 that the lamella is variable, being present in many but not all 

 immature shells, but always very low or wanting in the large 

 ones. 



SOME EOTES OH PHILOMYCUS. 



BY V. STERKI. 



In Ohio we had known only P. (Tebennophorus) caroliniensis 

 Bosc. Then a few dorsalis Binney were found here and there. 

 Some years ago, near Chippewa Lake, Medina Co., I found two 

 specimens of an entirely distinct species, as listed in the Ohio 

 catalogue; the genitals, etc., remain to be examined. The slug 

 may be the same as P. pennsylvanicus Pils. , but closer compari- 

 son is necessary. 



