90 The American Geologist. August. i89i 
Ooniatites intume8ce7i8 Beyrich, {=Ooniatitcs patersoni Hall; I have 
collected and studied scores of specimens of this species from the Intu- 
mescens-kaik of Westphalia and the Ilartz and can find no single detail 
or general feature on which to base a separation of this from the typi- 
cal German form. Also in the Naples beds). 
Ooniatites uniaiujiilarls Conrad, (abundant; also in the Naples beds). 
Ooniatites nodifcr Clarke, (in the Naples beds?). 
Ooniatites sp. nov. (a), (a deeply umbilicated primordial species with 
intumescens sutures and very strong concentric growth-varices on the 
younger whorls. Also in the Naples beds). 
Ooniatites sp. nov. (b), (a small primordial species with flattened dor- 
sum: compare G. forcipifer Beyrich. (Also in the Naples beds). 
QoiiUitites sp. nov. (c), (allied to G. intumescens but closely umbili- 
cated and with more inflated whorls. Not common). 
Ooniatites sp. (d), (similar to O. uniangularis but sharply carinate on 
the dorsum). 
Orthoceras pacator Hall. (To this species is referred the commonly 
occurring Orthoceras of the rocks, a smooth, terete form with constric- 
tion on the chamber of habitation. Also in the Naples beds). 
Orthoceras aciculoides Clarke, (also in the Naples beds). 
Orthoceras? filosnm Clarke. (The surface markings of this species 
are similar to those of the genus Pharetrella (P. tenebrosa Hall); it may 
prove to belong here. Also in the Naples beds). 
Orthoceras sp. nov. (a). 
Orthoceras sp. (b). 
Onhoceras sp. (c) 
Oomphoceras sp. nov. (a). 
Oomphoceras sp. nov.? (b). 
Bactrites sp. nov. (also in the Naples beds). 
Coleolus acicuUnn Hall; (also in the Naples beds), 
Tentacnlitcs gracilistriatus Hall, (also in the Naples beds). 
Styliolina fissurella Hall, (exceedingly abundant in the Naples beds). 
Bellerophon striatiis (Fer. and d'Orb.) Bronn. 
Bellerophon incis2is Clarke, (also in the Naples beds). 
Bellerophon sp. nov. (a). 
BclleropJion sp. (b). 
Loxonema noe Clarke, (also in the Naples beds). 
Pleurotomaria cnf. itys Hall. 
Pleurotomarin itys, var. tenuispira Hall, (also in the Naples beds). 
Platystoma minutissimnm Clarke. (This little shell is so exceedingly 
abundant both in the Styliola layer and in the concretionary layers of 
the Naples beds that there may be good reasons for regarding it of 
pteropodal nature, like Lirnacina and Spirialls, but dextrally coiled). 
Platystoma sp. nov. 
Mncrochellus »p. nov., (also in the Naples beds). 
A new gastropodous genus, suggestive of Antodetus Linnarsson, but 
a true phorid. 
L\iniilican1inm fragile Plall, (also in the Naples beds). 
Lnnulicardltira ornatum Hall, (also in the Naples beds). 
