DEVONIAN SECTION. OF ITHACA, N.Y. 95 
later investigations to represent the same portion of the section as 
that seen at the cliff at the Narrows above Chemung) are the fol- 
lowing, viz.: 
Calymene nupera (Fig. 116, p. 262, Ch.) =Phacops nupera. 
Avicula pectenformis (Fig. 117, 1, 2, p. 262, Ch., Cy.) =Pterinea chemungen- 
sis (Con.). 
Avicula spinigera (Fig. 117, 4, p. 262, Ch.) =Leptodesma spiningerum. 
Strophomena bifurcata (Fig. 120-2, Ch.) =Orthothetes chemungensis. 
Strophomena arctostriata (Fig. 120, 3, Ch.) =Orthothetes chemungensis. 
Strophemena interstrialis (Fig. 120, 5, Ch.) =Dovillina mucronata (Con.). 
Orthis carinata (Fig. 121, 1, Ch.) =Dalmanella carinata. 
Orthis interlineata (Fig. 121, 3, 4, Ch., Cy.) =Dalmanella tioga (Hall). 
Delthyris mesastrialis (Fig. 122, 1, 1a, Cy.) =Spirifer mesistrialis. 
Delthyris disjuncta ? H. (Fig. 122, 3, Ch.) =Spirifer disjunctus Sowerby. 
Delthyris cuspidata H. (Fig. 123, 1, Ch., Cy.) =Sp. disjunctus Sow. 
Delthyris acanthota H. (Fig. 123, 2, 2a, Ch., Cy.) =Sp. disjunctus Sow. 
Delthyris acuminata H. (Fig. 123, 5, 5a, Ch., Cy.) =Delthyris mesicostalis. 
Atrypa dumosa (Fig. 124, 1, 1a, Ch., Cy.) =Atrypa spinosa (Hall). 
Atrypa tribulis (Fig. 124, 3, Ch.) =Atrypa reticularis (Lin). 
Cyathophyllum p. (Fig. 273, Ch.) =? 
Conrad* in 1842 described several species, the locality of which 
is sufficiently well certified to refer them to this fauna. The species 
are (all from Chemung Narrows): 
Avicula spinigera (p. 237, Pl. 12, Fig. 3) =Leptodesma spinigerum (Con.). 
Avicula protexa (p. 238, Pl. 12, Fig. 6) =Leptodesma protextum (Con.). 
Avicula multilineata (p. 241, Pl. 13, Fig. 1) =Avicula multilineata (Con.). 
Avicula chemungensis (p. 243) =Pterinea Chemungensis (Con.). 
Cypricardites carinifera (p. 245, Pl. 13, Fig. 14) =Goniophora chemungensis. 
Inoceramus chemungensis (p. 246, Pl. 13, Fig. 9) =Mytilarca chemungensis 
(Con.). 2 
Nuculites chemungensis (p. 247, Pl. 13, Fig. 13) =Schizodus chemungensis 
(Con.). 
Strophomena lachrymosa (p. 256, Pl. 14, Fig. 9) =Productella lachrymosa 
(Con.). 
Strophomena lima (p. 256) P. lachrymosa var. lima (Con.). 
Strophomena mucronata (p. 257, Pl. 14, Fig. 1o)=Douvillina mucronata 
(Con.). 
Strophomena chemungensis (p. 257, Pl. 14, Fig. 12) =Orthothetes chemungen- 
sis. 
t “Observations on the Silurian and Devonian systems of the United States 
with Descriptions of New Organic Remains,” Jour. Acad. Nat. Sci., VIII (Jan. 18, 
1842), pp. 228, etc. 
