NO. 1192. TRENTON FAUNA OF BAFFIN LAND— SCHUCREBT. 163 



It diifers from my type specimen, which is a cast of the exterior, in being some- 

 what less gibbous, particularly in the nmbones, the beaks also coming closer, i. e., 

 they are almost in contact, while they are rather widely separated and less incurved 

 in the type. 



In the absence of evidence concerning the hinge, the generic position of the shell 

 is necessarily doubtful. Therefore, although admitting provisionally that it is 

 closely allied to Cyrtodonta gibbera, T am not at all satisfied that it will not turn out 

 to be a Vanuxemia near V. abrupta. 



Collector.— S, N. Oarpender. Cat. No. 28161, U.S.N.M. 



VANUXEMIA ABRUPTA Ulrich. 



Vanuxemia abrupta Ulrich, Geol. Minn., Ill, Pt. 2, 1894, p. 560, pi. xxxviii, 

 figs. 39-44. 

 Of this species there are two examples, which Mr. Ulrich has com- 

 pared with the types. In Minaesota this form is found in the Middle 

 Galena of Fillmore and Goodhue counties. 



Collector.— J. ^. Carpender. Cat. Nos. 28157, 8, U.S.N.M. 



VANUXEMIA BAFFINENSIS, new species. 

 (Plate XIII, figs. 26-28.) 



This species finds its nearest relatives in V. hayniana Saflford and 

 V. niota (Whitfield'). It dffiers from these species in the greater 

 obliquity of the shell. The largest specimen figured (figs. 29 and 30) 

 is a worn example, and is provisionally referred to V. baffitiensis as 

 a variety. When additional material is secured, it may prove to be a 

 distinct species. (Another specimen just received from Mr. A.V. Shaw 

 shows that the variety is probably a distinct species.) 



Collector.— J. N. Oarpender. Oat. No. 28160, U.S.N.M. 



WHITELLA ARCTICUS, new species. 



(Plate XIII, figs. 23-25.) 



Ulrich writes that this species of Whitella is nearest his W. rugaiina,'^ 

 from which it differs in being much more erect. In fact, W. arcticus is 

 more erect than any other species of the genus. The escutcheon is very 

 narrow. 



Collector.— J. N. Carpender. Cat. No. 33059, U.S.N.M. 



Family GEAMMYSIID.F Hall. 



SAFFORDIA MODESTA Ulrich. 



Saffordia modesta Ulrich, Geol. Minn., Ill, Pt. 2, 1894, p. 627, pi. XLi, figs. 29-31. 

 Of this form there are two specimens in the American Museum of Nat- 

 ural History, collected by Mr. R. W. Porter. Externally they agree 

 with the Minnesota species. 



1 See Geol. Minn., Ill, Pt. 2, 1894, p. 560. 

 ' Ibidem, p. 569, pi. xli, fig. 1. 



