Eemarhs on the Genus Coii-cJiicoUtes of NicJiGlson. 13 



somewhat like the cells of a coral. The ConchlcoUtes conica seems to ad- 

 here to each other when piled one on top of the other, as is often the 

 case, and to adhere to whatever object they attach to throughout the 

 whole length. I have a cluster of six having their points together, 

 and attached throughout their whole length, which make a conical 

 shaped mass, but do not show how or to what they were attached. 

 The cluster was found detached, as it is now. 



The two species, therefore, are not generically separated, and as 

 Conchicolitcs is the oldest genus, the Ortonia conica will fall into that 

 genus, and be called ConchicoUtes conica, unless it is really the Tentacv- 

 lites flexuosa of Hall, which I am inclined to believe, in which case it 

 will be known as ConchicoUtes flexuosa. Ortonia minor, for the same 

 reason, will be ConchicoUtes minor. 



I do not pretend to be able to throw any light upon the question of 

 their atfiaities with Serpake, or their classification as Tabicolar Anne- 

 Udes, and do not deny that it is possible that there are generic distinc- 

 tions between them, but simply present the above facts, with the 

 expression of an opinion that the differences pointed out and o])served 

 do not more than distinguish sj)ecies. 



Megamhonia Jamcsl. — (Meek. ) 



By an inadvertence of some kind Megambonia Jamesi is twice 

 callei- 31. Cincinnatiemis, on page 138 of the "Ohio Paleontology." 

 This book is a valuable contribution to science, but a little care 

 would have made it more valuable, by preventing some of the 

 typographical and other mistakes that occur in it. 



Strophomenafraeta. — (Meek.) — The Strophomena fracta (Meek), page 

 91 of the " Ohio Paleontology," would seem to be a good species, and 

 not a mere variety of S. alternata, because it differs, both externally 

 and internally, from the latter, and there are no shells marking the 

 gradations from one to the other that distinguish mere varieties, so 

 far as known. 



Heterocrhms simplex var. fjranclis. — (Meek.)— The crinoid l^ase, on plate 

 2, fig. 6 (cl, e,f), of the "Ohio Paleontology," is much more likely to be 

 the base of a Heterocrhms simplex var. grandis than the base of an Ano- 

 malocrinus incurvus, as suggested. 



