REPORT OP THE STATE PALEONTOLOGIST 1902 1057 



27 Platyceras platystoma Hall. A specimen 

 with the general aspect of this species. 



28 P. subnodosum Hall. 1 specimen. 



29 P. cf . retrorsum Hall. 2 specimens agreeing in 

 general with this species. 



30 P. unguif orme ? Hall. 2 specimens having the 

 form of this species, but lacking the full number of plications. 



31 Dalmanites micrurus ( Green ) . Rare. 



32 D. cf. pleuroptyx (Green) . 



33 Phacops logani Hall. A head in the fine compact 

 limestone, probably the transition beds of the Coeymans. With 

 it occurs Gypidula galeata and Monotrypa. 



The following species were obtained mainly from the upper 

 layers of the Coeymans at Mount Bob. 



1 Favosites helderbergiae. Basal beds. 



2 Rhipidomella cf. oblata Hall. 



3 Stropheodonta varistriata (Conrad) . Associ- 

 ated with Uncinulus pyramidatus in the crystalline 

 limestone. 



4 S. varistriata var. a r a t a Hall. 



5 Spirifer cf. saffordi Hall. 2 specimens with the 

 characters of this species. 



6 S. perlamellosus Hall. 1 specimen. 



7 S. cf. octoplicata Hall. With no. 13. 



8 Uncinulus pyramidatus (Hall). With 3, 12, 13 

 and 15. 



9 U. cf. mutabilis (Hall). Young; 2 specimens. 



10 Rhynchospira formosa Hall. 2 specimens. 



11 Rhynchonella altiplicata Hall. With 14. 



12 Meristella princeps Hall. 



13 M. 1 a e v i s Hall. 1 specimen. 



14 Gypidula galeata. Common. 



15 Aviculopecten spinulifer (?) Meek & Wor- 

 then. A specimen of a right valve more convex than that fig- 

 ured by Hall, but showing form and surface characters of that 

 species. 



16 Dalmanites cf. micrurus Conrad. 



