10 PENNSYLVANIA AND NEW YORK DEVONIAN. [bull.120. 
road, are found ledges of sandstone, containing numerous specimens of 
winged Lainellibranchs (1 Actinopteria cf. boydi), Avhich weather to 
a light gray color, but are bluish on a fresh fracture. This may be the 
" coarse yellowish-gray sandstone" mentioned by Prof. White as occur- 
ring<200 feet below the top of the Chemung, near Spragueville. 1 
Fauna of No. 1475 C7. 
Tropidoleptus carinatus (Con.) Hall (rr) 
Spirifera mesacostalis Hall (rr) 
Homalonotus dekayi (Green) Emm (rr) 
Paracyclas lirata (Con. ) Hall (rr) 
( ?) Actinopteria cf. boydi Hall (c) 
Palaeoneilo eniarginata (Con.) Hall var (rr) 
Rhynchonella sp (r) 
Nucuhtes sp (rr) 
No. 1475 C8. — Exposures of sandstone and shales near the summit of 
the second hill below Spragueville, on eastern side of the road. On 
the southern side of the ridge toward the summit is a ledge of rather 
massive sandstone. A little higher are shaly layers, some of which 
cleave very smoothly, and in these shales are some fossils. Lamelli- 
branchs are most abundant, but Spirifera mesastrialis Hall is also 
present. The fossils only occur in a thin layer in shales that are gen- 
erally nonfossiliferous. 
Fauna of No, 1475 C8. 
Nuculites ob longatus Con (a) 
Paracyclas lirata (Con.) Hall (c) 
Palaeoneilo plana Hall (aa) 
Prothyris lanceolata Hall (r) 
Microdon (Cypricardelia) gregarius Hall (?) (r) 
Palceoneilo emarginata (Con. ) Hall var (c) 
There are small specimens, which are apparently the same as the small 
shell figured bj' Prof. Hall on pi. 50, fig. 11, from Ithaca as this species. 
But there are larger specimens of this form, and these differ from P. 
emarginata in having the posterior margin only slightly sinuate, instead 
of deeply, and the umbonal slope is faint, forming a shallow depression 
which nearly disappears toward the umbo. This character is very 
marked when compared with the typical P. emarginata with its con- 
spicuous emargination. However, the shell is decidedly of the P. emar- 
ginata type, and although some authors might regard the variation as of 
specific rank, I prefer to call it only varietal. 
Nuculites cf. cuneiformis Con (c) 
The specimens are higher than most of Nuculites (except fig. 16, pi. 47) 
and in proportions suggest Goniophora; but they possess a clavicular 
ridge and teeth, and so are clearly Nuculites. There are smaller speci- 
mens associated with the larger, which are probably the young, as sug- 
gested by Dr. Charles E. Beecher. 
Leda diversa Hall (rr) 
Cf. Prothyris planulata Hall and Orthonota carinata Hall (rr) 
Difficult to decide to which of these species the two specimens belong. 
Orthonota (f)parvula Hall (?) (rr) 
Poorly preserved specimen. 
1 G 6 , p. 272. 
