62 Cincinnati Society of Natural Histov]). 



Genus Geraurus, Green. Gr. keras, horn ; oura, tail. 



10 Ceraiirus Icarus, Billings. Mythological name. 



11 perforator, Billings. L. pet\ through ; foro, I bore. 



12 pleurexanthemus, Green. Gr. ^Zeura, side; ex, out; anthos, 



a flower or ornanieutation. 



Genus Dalmanites^ Emmerich. Named in honor of Dalmau. 



13 Dalmanites breviceps, Hall. L. brevis, little; caput {cepi), head. 



14 Carleyi, Meek. 



15 callicephalus, Hall. Gr. kallos, beauty; kephale, head. 



16 Achates, Billings. Mythological name. 



Genus Proetus, Steininger. Gr. pro, before; efos, a year. 



17 Proetus parviusculus, Hall. L. diminutive o^ parvus, small. 



18 Spurlocki, Meek. 



Genus Lichas, Dalman. Mythological name. 



19 Lichas Trentonensis, Conrad. 



Genus Triarthrus, Green. Gr. treis, three; arthron, a joint. 



20 Triarthrus Becki, Green. 



Genus Trinucleus, Lhwyd. Gr. treis, three; nucleus, kernel. 



21 Trinucleus cencentricus, Eaton. L. con, together; centrum, the 



centre. 



22 bellulus, Ulrich. L. hellulus, diminutive of bellus, pretty. 



Order Phyllopoda. Gr. phullon, a leaf; 2)ous, podos, a foot. 

 Genus Beyrichla, McCoy. Named in honor of M. Beyrich. 



23 Beyrich i a falcigera, Hall and Whittield. !,. falx, a scythe; f/ero, 



I carry. 



24 oculifera, Hall. L. oculus, an e3^e; fero, I carry. 



25 regularis, Emmons. L. regularis, formed into bars. 



26 ciliata, Emmons. L. cilium, the eye-lash, hence fringed. 



27 Chambersi, S. A. Miller. 



28 Duryi, S. A. Miller. 



29 Richardsoni, S. A. Miller. 



30 striato-marginata, S. A. Miller. L. stria, a ridge; maryo, 



the margin. 



31 Ciucinnatiensis, S. A. Miller. 



Order Ostkacoda. Gr. Ostrakon, a shell. 

 Genus Leperditia, Renault. Gr. lepis, a scale; dis, dittos, double. 



32 Leperditia cylindrica. Hall. L. cylindrus, a cylinder. 



33 Byrnesi, S. A. Miller. 



34 minutissima, Hall. L. minutissimus, smallest. 



