BIBIJOGRAPHY Oi-^ PAL-EOZOTC CRUSTACEA 1] 



BEECHER (Charles E.)— Contin ued 



Bumastus Murch., Dysplanus Burmeister, Ectillaeiuis Salter, Holocephlina Salter, 

 Hydralenus Salter, Illaenopsis Salter, Illaenurus Hall, Nileiis Dalm., Octillaenus Salter, 

 Panderia Volbotli, Psilocepiiahis Salter, Symp'h\ sums Cioklfuss, and Thaleops Conrad. 



Family 7, Proetidae Barraiule. 



Cienera Proetus Steininger, Arethusina Barr., Brachymetopiis McCoy, Celmus Ang., 

 Cordania Clarke, Crotakirus Volb., Cyphaspis Burm., Dcclienella Kayser, Griffithides 

 Portl., Pliaetonella Novak, Phillipsia Port., Prioiiopeltis Corda, Pseudophillipsia Gem- 

 mellaro, Schmidtella Tschernyschew, Tropidocoryphe Novak, and Xipliogorriium Corda. 



Fainil\' 8, Bronteidae Barrande. 



Familv 9, Lichadidae Barrande. 



Genus Bronteus (joldfuss (Goldius DeKoninck). 



Genera Lichas Dalm., Arctinurus Castelnau, Arges Golf., Ceratolichas Hall and 

 Clarke, Conolichas Dames, Dicranogmus Corda, Homolichas Schmidt, Hoplolichas 

 Dames, Leiolichas Schmidt, Metopias Eichwald, (Jncholichas Schmidt, Platymetopus 

 Ang., Terataspis Hall, Trochurus Beyrich and Uralichas Delgado. 



Family 10, Acidaspidae Barrande. 



C^enera Acidaspis Murcli., Ancvropyge Clarke, Ceratocephala Warder, Dicranurus 

 Conrad, Udontopleura Emmrich and Selenopeltis Corda. 



tJrder C, Proparia. 



Free cheeks not bearing tiie genal angles; facial sutures extending from the lateral 

 margins of the cephalon in front of the genal angles, inward and forward, cutting the 

 anterior margin separately or uniting in front of the glabella. 



Compound paired eyes, scarcely developed or sometimes absent in the most primitive 

 family; well-developed and schizochroal in last familv. 



Family 11, Encrinuridae Linnarsson. 



Genera Encrinurus Emmrich, Areia Barr., Cybele Loven, Dindvmene Corda, Placi.- 

 paria Corda and Prosopiscus Salter. 



Family 12, Calymmenidae Brongniart. 



Group 1, Calymmene Brong., and Calymenella Bergeron and Calymenopsis Munier- 

 Chalmas and Bergeron. 



Second Group, Homalonotus Koenig, Brongniartia Salter, Burmiesteria Salter, Trim- 

 erus Green, Ptychometopus Schmidt; Pharostoma. 



Calymenopsis and Calymenella are closely related to Calvmmene. 



Family 13, Cheiruridae Salter. 



Genera Cheirurus Beyrich, Actinopeltis Corda, Amphion Pander, Anacheirurus Reed, 

 Ceraurus Green, Crotalocephalus Salter, Cyrtometopus Ang., Deiphon Barr., Diaphano- 

 metopus Schmidt, Eccoptocheile Corda, Hemisph^rocoryphe Reed, Nieszkowskia 

 Sclimidt, Onycopyge Woodward, Pseudosphaere.xocluis Schmidt, Sphaerexochus Beyrich, 

 Sphaerocoryphe Ang., Staurocephalus Barr., and ^'oungia I.indstriim. 



Family 14, Phacopidae Salter. 



Genera Phacops Emmrich, Acaste Goldf., Chasmops McCov, Coronura Hall, 

 Corycephalus Hall and Clarke, Cryphaeus Green (preoccupied for a genus of Coleop- 

 tera, 1833), Dalmanites Emm., Homalops Remele and Dames, Monorachos Schmidt, 

 Odontocephalus Conrad, Ptervgometopus Schniidt. Svmphoria Clarke, and Trimero- 

 cephalus McCoy. 



Note — Other subdivisions and classification of the Lichidae have been made by 

 Giirich, and also by Reed. 



The other families have been reclassified by Reed, \\"alcott and Raymond. Walcott 

 remarks, in regard to Damesella, that the facial suture cuts the postero-lateral margin 

 outside of the genal angle, so as to leave the genal angle on the fixed cheeks; the spine 

 corresponding to the genal spine in other genera of the order Proparia is on the free 

 cheeks. 



