152 



Transactions of the Society, 



I. ENTOMOSTRACA 



Order 1. Phyllopoda. 



Apus .... 



2. Phyllocarida. 



Hymenocarif, 



Ceratiocaris (Ntbulia *) 

 Estheria 

 Cheirocepltalm 



Artemia 



3. Cladocera. 



Daphnia and its allies 



IX. ARTHROPODA. 

 A. Crustacea. 



1. Branchiopoda. 



Cambrian lo recent. 



Ditto. 



Devonian to recent. 

 Tertiary to recent 

 (Freeh-water). 

 Ditto (saliue). 



Probably all recent. 



(The Ephippia winterers of Daphnia have been lound fossil- i-n. 

 the Forest Bed scries of Norfolk.) 



4. 08TRACODA. 



Cypris, Candona, Cythere, &c. . P.dteozoic to recent. 



5. COPEPODA. 



Cyclops, &c. ..... Not found fos>il. 



JMi.ny other families are not represented in a foBsil state. 



1. PODOPHTHALMA. 



Brachyura . 

 Macrura 



Schizopoda . 



Stomapoda . 



2. Edriophthalma. 



Cumacea 

 Isopoda 

 1'rxarcturuK 

 Amphipoda . 



II. MALACOSTRACA. 



Jurassic to recent. 

 Carboniferous to lecent. 

 Ditto (Palxocaris). 

 Devonian or Silurian lo 

 recent. 



Carboniferous to recent. 

 Magn. L. to lecent. 



De\oniau ? 

 Carboniferous ? 



III. GIGANTOSTRACA Ilacckel. 



t kilobit a ..... 



Merostomata. 



Eurypterida ..... 



Xiphosura ..... 



IV. CIRRIPIiDIA. 



(Sessile) 

 Balanidaj (Brachylepas) 



(Pedunculated) 

 Lepadidac (jrurrilepas) . 



Scorpions. B - Arachnida. 



(Scorpions) ..... 



Ealieophonui .... 



Eophrynus . 



C. Myriopoda. 



Eupholeria and allies 



D. Insecta. 

 Talseodidyoptera. 



Blatta ...... 



Eugereon, etc. .... 

 Orthoptera . . . . . 



Neuroptera . 



Cambrian to Carbon iferousv. 



Ditto. 



Silurian to rccci t. 



Cretaceous to recent. 

 Silurian to recent. 



Silurian to recent; 



world-wide distribution.. 

 U. Sil., Scotland, Gotland, 



and Illinois, U.S. 

 Carboniferous only. 



Coal-measures to recent. 



(Silurian ?) to recent. 

 Permian to recent. 

 Coal-measures to lecent. 

 Coal-measure b to recent.. 



* Recent analogue. Probable progenitor of Decaj oda. 



