List of Lower Silurian Fossils, Cincinnati Group. • 79 



Genus Cliinacograptus, Hall. Gr. kliniax, a ladder; grapJio. 



389 Climacograptus typicalis, Hall. Gr. tupikos, typical. 



390 bicornis, Hall. L. bicornis, having two horns. 



Genus Jfegalogrtiptus, S, A. Miller. Gr. viegas, greaf; fjrapho. 



391 JMegalograptus Welchi, S. A. INIiller. 



Genus Dictyograptus, Ulrich. Gr. dictiion, a net; grapho. 



392 Dictyograptus reticulatus, Ulrich. L. reticulatus. reticulated. 



Order Zoantharia. Gr. zoon, an animal; anthos, a flower. 

 Famih^ Cyathophyllida;. Gr. kuathos, a cup; phullon, a leaf. 

 Genus PaUeophyllum, Billings. Gv. palaios, ancient; phullon. 



393 Pala^ophyllum divaricans, Nicholson. L. divarico, I spread. 



Genus Strep)telasma, Hall. Gr. strejjho, I twist; elasma, a plate. 



394 Streptelasma corniculum, Hall. L. corniculus, a little horn. 



Family Favositidm. Jj.favus, a honey-comb. 



Genus Alveolites^ Laraark. L. alveolus, a hollow A'essel. 



395 Alveolites granulosus, James. L. granulosus, full of granules. 



Genus, Choitetes, Fischer. Gr. chaite.^ a bristle. 



396 Chsetetes approximatus, Nicholson. L. ad; proximo, I come near. 



397 Briareus, Nicholson. Mythological (a giant with a hundred 



arms). 



398 calyculus, James. L. calyculus, a little bud. 



399 Cincinnatiensis, James. 



400 clavacoideus, James. L. clava, a club; Gr. eidos, form. 



401 clathratulus, James. L. clathra, a grate. 



402 corticaus, Nicholson. L. cortex, bark. 



403 crustulatus, James. L. crustula, dim. of crusta, a crust. 



404 Dalei, Edwards and Haime. 



405 delicatulus, Nicholson. L. delicatus, slender. 



406 discoideus, James. Gr. diskos, a disk; eidos, form. 



407 Fletcheri, Edwards and Haime. 



408 filiasa, D'Orbigny. Probabh' not found iu this group. 



409 frondosus, D'Orbign}^ L. /rowcZosM^, full of leaves. 



410 gracilis, James. L. gracilis, slender. 



411 Jamesi, Nicholson. 



412 l^xoperdon, SaA'. Gr. lukos, a wolf; perdo, to break wind. 

 Note. — This species, lycoperdon, formerly, included many 



corals which are now described under other specific 

 names. 



