SUBORDER I. 

 GNATHOSTOMATA. 



The Entomostraca with a mouth of the normal form belong to two 

 series, and each includes three tribes, as presented in the earlier part 

 of this volume. The following are these subdivisions, with their 

 characteristics : — 



Leoio I. LOPHYROPODA* 



Pedes numero normales et non multiplicati. 



Tribus I. CYCLOPOIDEA.-J— Corpus elongatum, rectum, abdomine non 

 inflexo Cephalothorax et abdomen pauci-annulati. Membra buc- 

 calia pedesque thoracis numero 16-18. Pedes thoracis 6-10 postal 

 biremes, foliacei, ultimis interdum prehensilibus. 



Tribus II. Daphnioidea.J — Corpus breve, postice inflexum, testa 



* Lophyropa, Latreille, Cut. Eigne An., 181T; Lo P hyropoda(m put), «-*"* 

 Sci. Nat, xiv 524; ibid., Gray, Cat. Brit. Crust. Brit. M«, 1850, 100; dad, Ba.rd, 



Brit. Entomost., 138. ...4-11 n^mnda 



t Carcinoida (in part), Latreille; Copepodes, Edwards, Crust., m. 411; <***. 



Baird, Brit. Entomost., 182; Orophyrapoda, Burmeister, Orgamz. of Tr.loo.te., 



Copepodita, Gray, Cat. Brit. Crust. Brit. Mus., 1850, 110. 



XDaphnides, Strauss; Cladocera, Latreille, Cuv. Begne An.; Daphnovks, or tla 



doceres, Edwards, iii. 372; Cladocera, Baird, Brit. Entomost., 62. 



