CRUSTACEA. 



Subclass: 



ENTOMOSTEACA. 



Genus: 



Plumulites. 



Order: 



Trilobita. 



It 



Strobilepis. 



Familij: 



Calymenidse. 



Family: 



Balanidse. 



Genus: 



Calymene. 



Genus: 



Protobalanus. 



a 



Homalonotus. 



Order: 



Phyllopoda. 



Family: 



Bronteid.89. 



Family: 



Limniadiadse. 



Genus : 



Bronteus. 



Genus: 



Estheria. 



Family: 



Phacopidse. 



11 



Schizodiscus. 



Genus: 



Phacops. 



Subclass: 



MEEOSTOMATA. 



'• 



Dalmanites. 



Order: 



XiPHOSURA. 



Subgenus 



Hausmannia. 



Family: 



Limulidse. 



a 



Coronura. 



Genus: 



Protolimulus. 



(< 



Cryphseus. 



Order: 



EUKYPTERIDA. 



a 



Corycephalus. 



Family: 



Eurypteridse. 



a 



Odontocephalus. 



Genus: 



Eurypterus. 



a 



Chasmops. 



" 



Stylonurus. 



Family: 



Acidaspidae. 



Subclass: 



MALACOSTEACA. 



Genus: 



Acidaspis. 



Order: 



Phyllocarida. 



Family: 



Lichadee. 



Family: 



Ceratiocaridse. 



Genus: 



Lichas. 



Genus: 



Ceratiocaris. 



Subgenus. 



Terataspis. 



a 



Echinocaris. 



" 



Ceratolichas. 



" 



Dithyrocaris. 



i( 



Conolichas. 



a 



Elymocaris. 



" 



Hoplolichas. 



i( 



Tropidocaris. 



a 



Arges. 



Family: 



RMiiocaridae. 



a 



Dicranogmus. 



Genus: 



Ehinocaris. 



Family: 



Proetidae. 



Family: 



Discinocaridse. 



Genus: 



Proetus. 



Genus: 



. Spathiocaris. 



" 



Phaethonides. 



a 



Dipterocaris. 



" 



Cyphaspis. 



Order: 



Decapoda. 



Order: 



ClERIPEDIA. 



Family: 



Carididse. 



Family: 



Lepadidae. 



Genus: 



Palaeopalsemon 



PLATES OF CEUSTACEA. 



October 1, 1887. 



I. Calymene Engraved. 



II. Homalonotus Engraved. 



III. Homalonotus Engraved. 



IV. Homalonotus Engraved. 



V. Homalonotus Engraved. 



Va. Homalonotus Engraved. 



Yb. Homalonotus. 



