160 C. D. WALCOTT — DISCOVERY OF SILURIAN VERTEBRATES. 



BRACHIOPODA— Continued. 



Streptorhynchus sulcatum, Verneuil. *Rhynchonella capax^vax. ijicrebescens, 



sp. undet. Hall. 



Orthis biforata, Schlotheim. Rhynchonella dentata, Hall. 



flabellum, Sv. ? Camarella, sp. undet. 

 * " subquadrata, Hall. 



LAMELLIBRANCHIATA. 



Ambonychia bellastriata, Hall. Modiolopsis, 2 sp. undet. 



2 sp. undet. Cypricardites, 2 sp. undet. 



Modiolopsis iiltiiHt. Hall. Tellinomya, sp. undet. 



GASTEROPODA. 



Metoptoma, sp. undet. Cyclonema bilex, Conrad. 

 Helicotoma (casts of the interior). " percarinata, Hall ? 



Murchisonia tricarinata, Hall. sp. undet. 



2 sp. undet. Bellerophon bilobatus, Sow. 



CEPHALOPODA. 



* 



^Endoceras proteiforme, Hall. Gomphoceras powersi, James? 

 Ormoceras tenuifilam, Hall. " sp. undet. 



crebriseptum, Hall? Cytoceras, 2 sp. undet. 



Orthoceras vertebrale, Hall. IAtuites, sp. undet. 



midticameratum, Hall. 



TRILOBITA. 



'■'-. [saphus, like .I. platycephalus (frag- Lllsenus crassicauda, Wahlen. 

 ment of pygidium). * " mitteri, Billings. 



Summary. 



. , o • Species 



' '"■ '>'•"*• ;,/,„//,/,,/. 



Protozoa 2 •*! 1 



Actinozoa 8 8 2 



Echinozoa 2 2 



Brachiopoda 5 12 9 



Lamellibranchiata 4 !• 2 



Gasteropoda 5 it 4 



Cephalopoda 6 9 ti 



Trilobita 2 :; 2 



Total 34 55 26 



Recurrent above 19 9 !> 



Cun lined to 15 4ii 17 



