prosser.] SECTIONS NEAR DINGMANS. 29 
it is exposed for observation within the district;" 1 and the statement 
is repeated by Prof. Lesley in the final report. 2 
It will be seen from the lists of identified fossils reported in this 
paper, that trilobites are not of uncommon occurrence, but on the con- 
trary appear to be about as abundant as in the Hamilton rocks of cen- 
tral and western New York. 
Fauna of No. 1476 B4. 
Phacops rana (Green) Hall (aa) 
Pabeoneilo constricta (Con.) Hall (r) 
Tellinopsis subemarginata (Con.) Hall (rr) 
Pleurotoinaria capillaria Con (rr) 
Orthoceras sp (r) 
No. 1476 B5. — Bluish arenaceous shales near the summit of Prickly 
Pear Hill, west of Bushkill. Only a few specimens of Nticula corbuli- 
formis Hall were found. 
No. 1476 B6.— At the foot of the hill, which is 350 feet lower than B5, 
a small exposure of bluish-black shale was found in which Lunulicar- 
dium fragile Hall occurs, but the exposure is not so good as that along 
the highway at the foot of the hill farther west. 
SECTIONS NEAR DINGMANS, PIKE COUNTY, PA. 
No. 1476 El. — Exposures in Hornbecks Creek, at the foot of Indian 
Ladder Falls, 2£ miles south of Dingmans. The rocks are the blue 
arenaceous moderately coarse shales of the Hamilton. Fossils are not 
common. In the bed of the creek are loose blocks of a coarse-grained, 
somewhat calcareous rock in which fossils are abundant. They are 
washed down from above and are probably from the calcareous 
horizon called Tully by Prof. White. Higher up the cliff the fossils 
are rather more abundant. 
Fauna of No. 1476 El. 
Spirifera grannlifera Hall (r) 
Tropidoleptus carinatus (Con.) Hall (rr) 
Platyceras sp (rr) 
Athyris spiriferoides (Eaton) Hall (rr) 
Spirifera medialis Hall (?) . . (r) 
Modiomorpha concentrica (Con. ) Hall (rr) 
Goniopliora hamiltonensis (Hall) Mill (rr) 
Paheoneilo constricta (Con.) Hall (r) 
Nuculites oblongatus Con. (?) (rr) 
Homalonotus de kayi (Green) Emm (rr) 
Paracyclas lirata (Con. ) Hall (rr) 
Coleolus tenniciDctum Hall (rr) 
( ?) Murchisonia sp (rr) 
<G<\ p. 112. 
» A Summary Dese. of the Geol. of Peini., Vol. II, 1892, p. 1249. 
