BUFFALO SOCIETY OF NATURAL SCIENCES 135 



In beds of the same series in this section the following marine 

 organisms have been obtained, according to Peach and Home: 



Amphispongia sp. 



Nidulites favus Salt. 



Dictyonema venustum Lapw. 



Dictyonema (Chondrites) verisimile Salt. 



Cyrtograptus murchisoni ? Carr. 



Monograptus priodon Bronn. 



Monograptus vomerinus Nich. 



Favosites sp. 



Tentaculites tenuis Sow. 



Palasterina sp. 



Crinoid fragments. 



Lingula lewisi Sow. 



Lingula symondsi Salt. 



Strophomena walmstedti Lindst. 



Euomphalus rugosus Sow. 



Conularia monile Lindst. 



Conularia sowerbyi Def. 



Conularia sp. 



Orthoceras angulatum Wahl. 



Gomphoceras ellipticum ? M'Coy 



The form described as Bembicosoma pomphicus is somewhat prob- 

 lematical and may be more nearly related to Hemiaspis than to the 

 eurypterids. Of special interest is the finding of a scorpion in these 

 beds. There is only one specimen of Palaeophonus loudenensis and 

 this is in a bad state of preservation so that it is impossible to tell 

 whether this early scorpion was aquatic and gill-bearing, or terrestrial. 

 Drepanopterus is a new genus founded by Laurie for the three species: 

 pentlandicus, bembicoides , and lobatus, but they are all described from 

 imperfect material; the first from a fairly good specimen, the other 

 two from a few slightly better. 7 Laurie's genus Bembicosoma 8 with 

 the one species pomphicus was established for a few rather good 

 fragments, which, however, were only doubtfully identified. SU- 

 monia dubia, also described by Laurie, is but poorly represented, as 

 are likewise the three species of Stylonurus: elegans, ornatus and 



7 Clarke and Ruedemann have placed Drepanopterus as a subgenus of Stylonurus. 



8 Laurie originally spelt the name Bembycosoma and the species of Drepanopterus, bembycoides, 

 but in the corrigenda to his 1900 paper, p. 590, (147) he called attention to the proper form Bembi- 

 cosoma and bembicoides, a change which has not been noted by later authors. 



