1917.] NATUEAL SCIENCES OF PHILADELPHIA. 63 



Microphysa ingersolli, with three outHne figures which do not ade- 

 quately represent the material he collected or any specimens we have 

 seen from Colorado or elsewhere, and the lateral view is misleading. 

 Binney," in 1878, 1885, 1886 and 1890, again published misleading 

 figures, perhaps based upon the original figures. These all represent 

 a shell with apex so depressed that it does not show at all above the 

 last whorl in lateral view. In 1887 Ancey,^- relying upon the supposed 

 accuracy of those misleading figures, as he plainly indicates, and 

 finding that his specimens of Thysanophora collected by Hemphill 

 in Logan Canyon, Utah, exhibited a spire elevated clearly above the 

 last whorl, described it under the name Microphysa ingersolli convexior. 

 Meanwhile Binney, in his second supplement, in presenting what he 

 said was a better figure of ingersolli, recorded under that name 

 material collected by Hemphill (doubtless part of the same lot of 

 material from which Ancey's types came) at Logan Canyon and 

 Mt. Nebo, Utah, and also Weston, Oregon. We have examined 

 Thysanophoras from two stations in Logan Canyon, a number of 

 other localities in Utah and Idaho and many localities in Colorado, 

 some of them near the type locality of ingersolli, and can see no 

 difference, none of them being accurately represented by the figures 

 of ingersolli. Specimens from Logan Canyon were sent to Pilsbry, 

 who compared them with Ingersoll's specimens of ingersolli.- He 

 agrees with us that the names are exact synonyms, ingersolli, of 

 course, having priority. In 1890 Professor T. D. A. Cockerell was 

 permitted to examine and copy portions of Ancey's manuscript 

 notes, including notes on his M. i. convexior, with pen and ink figures. 

 We have examined his copies of Ancey's figures, and the one labelled 

 ingersolli represents Binney's misleading figure of the species, while 

 the one labelled convexior is an excellent illustration of the shell 

 found in Montana, Idaho, Utah, Colorado, New Mexico and doubt- 

 less Wyoming, and which must take the name ingersolli. It is 

 interesting to note that though Binney recorded ingersolli from 

 Weston, Oregon, collected by Hemphill, Pilsbry'^ recorded and 

 figured specimens from the same place under the name convexior, 

 because they had the spire considerably higher than material from 

 Colorado and elsewhere. This confirms our conclusion that Binney 

 was really dealing with a form having a slightly raised spire, while 



11 Bin; -y, Terr. Moll. U. S., vol. V, p. 173; 2d Suppl., p. 35, PI. Ill, fig. 5; 

 3d Suppl., p. 215; Man. Amer. Land Shells, p. 170. 



12 The Conchologist's Exchange, vol. II, p. 64, 1887. 

 "Proc. Acad. Nat. Sci. Phila., LXIl, 117, 1910. 



