72 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 53 



Subgenus LINGULEPIS Hall [1863, p. 129] 

 LINGULELLA (LINGULEPIS) ACUMINATA SEQUENS, new variety 



Plate 8, Figure 4 



Glossina acuminata Hx\ll and Clarke [not Conrad], 1892, Eleventh 

 Ann. Rept. State Geologist New York for 1891, pi. i, figs. 10, 11. (No 

 text reference.) 



Lingiila (Glossina) acuminata Hall and Clarke [not (Conrad)], 1892, 

 Nat. Hist. New York, Paleontology, VHI, Pt. i, pi. i, figs, i, 2. (No 

 text reference. Figures i and 2 are copied from pi. i, figs. 10 and 11, 

 of the preceding reference.) 



This variety differs from Liiigitlclla (Liiigulepis) acuminata (Con- 

 rad) [1839, p. 64] in being somewhat less attenuate in its ventral valve 

 and in having the cardinal slope of the ventral valve straight instead 

 of gently incurved. It occurs at a slightly higher geologic horizon 

 than L. (L.) acniniuata and appears to be a form derived from that 

 species. 



Judging from Messrs. Hall and Clal-ke's illustrations [1892a, pi. i, 

 figs. 10 and ii], they had representatives of this variety of L,. (L.) 

 acuminata and mistook them for the form illustrated by Hall [1847, 

 p. 9] as Lingula acuminata. That figure represents a typical form of 

 L. (L.) acuminata and is not the variety illustrated by Hall and 

 Clarke in 1892. 



The specimens illustrated by ]Messrs. Hall and Clarke are given 

 as from the Calciferous sandstone in Saratoga County, New York. 

 The specimen which I have taken as the type of this variety is from 

 Division A of the Beekmantown formation. 



Formation and Locality. — Ordovician : Beekmantown forma- 

 tion, Division A ; quarry near the northwest suburb of Ticonderoga, 

 Essex County, New York. 



NEOBOLUS Waagen [1885, p. 756] 



Neoboliis Waagen, 1885, Mem. Geol. Survey India, Paleontologia Indica, 



13th sen, Salt Range Fossils, I, Pt. 4, fas. 5, pp. 756-758. (Described 



and discussed as a new genus.) 

 Davidsonella Waagen, 1885, idem, pp. 762-764. (Described and discussed 



as a new genus.) 

 Not Davidsonella Munier-Chalmar, 1880. 

 Lakhmina OehlErt, 1887, Manuel de Conchyliologie, by Fischer, p. 1265. 



(Described in French.) 

 Lakhmina Ochlert, WaagEn, 1891, Mem. Geol. Survey India, Paleontologia 



Indica, 13th ser., Salt Range Fossils, IV, Pt. 2; description of plate 



II, figs. 3-4. (No text reference.) 



