138 BRITISH ENTOMOSTRACA. 



LEGION II LOPHYROPODA.* 



LOPHYROPA, Latreille, Cuv. Regne An., iv, 150. 



Say, Journ. Acad. Nat. Sc. Philad. i. 

 LOPHYROPA and OSTRAPODA, Desmarest, Cons. gen. Crust. 

 LOPHYROPODA, Leach, Diet. Sc. Nat., xiv, 521. 



/. K Gray, Synops. Brit. Mus., 1842. 



Burmeister, Beitr. zur Naturg. der Raiikenfusseu. 

 BRANCHIOPODES FRAXGLS (pars), Lamarck, Hist. An. s. Vert., v. 



Character. Mouth furnished with organs fitted for mas- 

 tication. Branchiae few, attached to the organs of mouth. 

 Body having an envelope, either in form of a buckler, 

 inclosing head and thorax, or in shape of a bivalve shell, 

 inclosing the whole animal. Feet few in number, not 

 exceeding five pairs. Articulations more or less cylindri- 

 cal, and serving the animal for the purpose of locomotion. 

 One eye. Two pairs of antennae ; one pair of which are 

 used by the animal as organs of motion. 



ORDER I OSTRACODA.f 



OSTRACODA, Latreille, Hist. Nat. Crust., 1801 ; Cuv. Regnc Anini.. 



iv, 151. 



Baird, Mag. Zool. and Bot., i; Trans. Berw. Nat. Club, ii. 

 OSTRACINS ou BiTESTACi's, Dvm&ril, Zoologie Analytiquc, 1S06. 

 OSTRAPODA, Straus, Mein. Mus. d'Hist. Nat., vii. 

 CYPROIDES ou OSTRACODES, M. Edwards, Hist. Nat. Crust., iii, 393. 

 CROPHYROPODA B., Burmeister, Organization of Trilobites (Ray Soc. 



edit.), 34. 

 CYPRIDAI i. \ vel OSTRACODA, Dana, Proc. Amer. Acad. Sc., 1849. 



Character. Hody inclosed entirely in a covering of 

 two valves, resembling a bivalve shell. Posterior jaws 

 branchiferous. No external ovary. Firt two and three 

 pairs, adapted for progressive motion. 



Tins order contains three families, Cypridae, Cytheridae, 

 ;ni(l Cypridinadae. 



I'Yom \o<j>vpot;, havniL 1 - -Mil' hairs, anil n-oi't. foot. 

 f I'rom nnrpaKoi', ;\ slirll. 



