1 ( .)() PROCEEDINGS OF THE NATIONAL MUSEl I/. vol.38. 



of localities in Virginia and Maryland, mostly as detached specimens, 

 generally with the base and apex missing, so that the record of its 

 range is somewhat unreliable, nor can it be otherwise from the 

 nature of the material. These doubtful occurrences are indicated by 

 a query in the table of distribution. 



Professor Fontaine has recorded this species from Cape Lisburne, 

 Alaska; from several Californian localities referred to the Shasta 

 group; from the Kootaine formation at Geyser, Montana, and from 

 the Lakota formation in the Western Black Hills, at Barrett, Wyo- 

 ming. Referring to these very briefly, it may be said that the 

 Alaska locality is much older than any of the others, and the fossils 

 referred to this species, previously identified by Lesquerenx as . 

 Irites alaslcana Lesqucreux and Bmciv pa/mata I leer, are entirely 

 uncharacteristic, and, in the writer's judgment, are in nowise related 

 to Nageiopsis. The Shasta records are based entirely on small 

 fragments, which show only the middle portion of leaves and often 

 lack the venation. The following quotation from Fontaine's report 

 (1905, p. 259) sufficiently indicates their reliability: "The presence 

 of X. longifolia in the flora of the Shasta formation can not be posi- 

 tively determined from the specimens found." 



The Kootaine record is likewise extremely doubtful, and is based 

 on five or six fragments from Geyser which are unattached and show- 

 neither bases nor lips. The specimens reported from the Lakota 

 formation are also all fragmentary and uncharacteristic, and while 

 we would expect to find this species in the west, the nature of the 

 remains thus far collected scarcely justifies the identifications which 

 have been based upon them, and as furnishing facts for stratigraphic 

 correlation they are absolutely valueless. 



Occurrence. — Patuxent formation. Dutch Gap, Kankeys, Cock- 

 pit Point, Telegraph station (Lorton), Virginia. Arundel forma- 

 tion. Langdon, District of Columbia. Pat APSCO FORMATION. Near 

 Brooke, Mount Vernon, Deep Bottom (?), Chinkapin Hollow (0, 

 Virginia; Fort Foote, Federal Hill, Vinegar Hill ( ?), Maryland. 

 ' Lakota formation. Barrett, cliff on north side of valley of South 

 Pork of Hay Creek, Wyoming. ( ?) Kootaine formation. Geyser, 

 Montana. ( ?) Shasta FORMATION. Knoxville and Horsetown beds, 

 Tehama County, ( 'alit'ornia. 



NAGEIOPSIS ANGUSTIFOLIA Fontaine. 



Nageiopsis angustifolia Fontaine, Monogr. U. S. Geol. Surv., No. L5, L890, p. 202, 

 pi, 86, figs, 8, 9; pi. 87, figs. 2 6; pi. 88, figs. 1, 3, I, 6 8; pi. s!i, fig. 2.- Fon- 

 taine, in Ward. L9tb Ann. Rept. V . S. Geol. Snrv., pt. 2, ISO!), p. 684, pi. 

 168, fig. 7.— Fontaine, in Ward. Monogr. V. S. Geol. Surv., No. 18, 1905, 

 pp. 219, 491, 516, 528, 560, pi. 117, figs. I. 5. 



Description. Much branched stems, of comparatively large caliber. 



Leaves variable in size, becoming smaller on ultimate twigs, but con- 





