138 
BRITISH ENTOMOSTRACA. 
Legion II— LOPHYROPODA.* 
Lophyropa, Latreille, Cuv. Regne An., iv, 150. 
— Say, Journ. Acad. Nat. Sc. Philad. i. 
Lophyropa and Ostrapoda, Besmarest, Cons. gen. Crust. 
Lophyropoda, Leach , Diet. Sc. Nat., xiv, 524r. 
— /. E. Gray , Synops. Brit. Mus., 1842. 
— Burmeister, Beitr. zur Naturg. der Rankenfussen. 
Branchiopodes erarges {pars), LamarcJc, Hist. An. s. Yert., 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. Beet 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. Regne Anim., 
iv, 151. 
— Baird , Mag. Zool. and Bot., i; Trans. Berw. Nat. Club, ii. 
Ostracins ou Bitestaces, Bumeril, Zoologie Analytique, 1806. 
Ostrapoda, Straus, Mem. Mus. d’Hist. Nat., vii. 
Cyproides ou Ostracodes, M. Edwards , Hist. Nat. Crust., iii, 393. 
Crophyropoda b., Burmeister, Organization of Trilobites (Rav Soc. 
edit.), 34. 
Cypridacea vel Ostracoda, Dana, Proc. Amer. Acad. Sc., 1849. 
Character . — Body inclosed entirely in a covering of 
two valves, resembling a bivalve shell. Posterior jaws 
branchiferous. No external ovary. Feet two and three 
pairs, adapted for progressive motion. 
This order contains three families, Cypridae, Cytheridae, 
and Cypridinadae. 
* Prom \o(pvpog, having stiff hairs ; and novc, foot. 
■)■ Prom oarpaKov, a shell. 
