52 



NEW YORK STATE MUSEUM 



Atrypa reticularis Linne c 



Camarotoechia congregata Conrad 

 C. prolifica Hall 



Pentanierella pavilionensis Hall, .cc 

 Cryptonella planirostris Hall 



C. rectirostris Hall 

 Tropidoleptns earinatus Conrad . .cc 



Crinoids 

 Platycrinus sp. 

 Megistocrinus depressus Hall 

 M. Ontario Hall 

 Tbylacoorinus clarkei W. & S. 

 Ancyrocrinus bulbosus Hall 

 Dolatocrinus liratus Hall 



D. intermedins Hall 

 D. glyptus Hall 



D. troosti Hall 



Aorocrinus cauliculus Hall 

 A. pocillmn Hall 

 A. praecursor Hall 

 Eleutberocrinus wbitfieldi Hall 

 Gennaeocrinus eucbaris Hall 

 G. nyssa Hall 



Gilbertsocrinus spinigerus Hall 

 Melocrinus gracilis W. & S. 

 Poteriocrinns diffnsus Hall 

 P. nereus Hall 

 P. nycteus Hall 

 Poteriocrinus sp. 

 Rbodocrinus gracilis Hall 

 R. spinosus Hall 

 R. nodnlosus Hall 

 Nucleocrinus lncina Hall 

 Pentremites leda Hall 



Menteth limestone 



In this thin layer the species of the fauna are crowded together 

 in great numbers. Several years ago the late Prof. Charles E. 

 Beecher of Yale University collected at the localities of this inter- 

 esting formation, and the etchings from the material thus gathered 

 have been studied and identified by Percy E. Raymond of the 

 Carnegie Museum, Pittsburg. Mr Raymond is about to publish 

 some account of the fauna and he has permitted me to give here 

 his list of species determined to which I have added a few not 

 recognized by him. 



Worms 

 Spirorbis angulatus Hall 

 S. spinuliferns Nidi. 

 Cornulites tribulis H all 

 Cornulites sp. no v. 

 Autodetus lindstroemi Clarke 

 Autodetus sp. nov. 

 Proetus rowi Green 

 P. macrocepbalus Hall 

 Cypbaspis ornata Hall 

 Ilomalonotus dekayi Green 

 Pbacops rana Green 

 Crypbaeus bootbi Green 



Crustaeeans 

 Prlmitiopsifi pimctllifera Hall 

 Klrkbya parallels Vlrich 

 Btrepola siginoidalis Jones 



Isocbilina lineata Jones 

 I. (?) fabacea Jones ' 

 Primitia seminnlns Jones 

 Octonaria stigmata Tlrieh 

 Ctenobolina papulosa Ulrieh 

 Beyricbia kolmodini Jones 

 Halliella retifera TlricJi 

 M"oorea bicornnta 11 rich 

 Ostracoda — several unidentified spe- 

 cies 



Cephalopods 

 Orthoceras sp. ind. 

 Pteropoda 



Styliola sp. und. 

 Tontaonlitos bellnlns Hall 

 Hyollthefl aclifl Hall 



