474 CLASS VIII. 
green, with a black body, ‘The larva lives on thistles, is pale-green, pro- 
vided with lateral spines, and is covered on the back by its own excrement. 
The perfect insect, when touched, draws its feet and antennz under the 
thorax, and remains so immoveable that it might be supposed to be dead. 
Cassida cquestris FABR., PANZER, Deutsch! Ins. Heft 96, Tab. 5; 4’” long; 
differs from the preceding species by the yellow feet, and a yellow margin 
at the abdomen.—Cassida nobilis, L., &c. 
Comp. for the species of this genus SCHOENHERR, Synon. I. 2, pp. 209— 
230, which however have been since increased by many new discoveries. 
F. W. Hore possesses five hundred of them in his private collection ; and 
knows, at the least, two hundred more. The greatest number (four-fifths) 
of the known species are found in the new world. See F. W. Horr, Obser- 
vations on the Tortoise or Shield-Beetles, Annals of Natural Hist. 111. 1839, 
pp- 92—100, Pl. 1v., where also some new genera are proposed as divisions 
of this numerous group. 
Imatidium Fasr. Head received in the thorax, emarginate an- 
teriorly. 
Family XLVIII. Hupoda s. Parameca (Crioceride LEACH). 
Tarsi as in the preceding family. Body oblong. Antenne filiform 
or somewhat thicker towards the extremity, inserted before the 
eyes, scarcely longer than head and thorax together. Thorax 
narrow, cylindrical or quadrate, receiving the head as far as the 
eyes. Posterior feet in most large, with thickened thighs. Lobes 
of maxilla membranous, with outer lobe dilated towards the apex, 
not palpiform. 
Phalanx I. Criocerina. Mandibles broad, with two or three 
teeth at the apex. Ligula entire or scarcely emarginate 
Megascelis Dus., Later. Antenne almost of the length of body, 
with joints slender, elongate. Mandibles truncated, thick. 
Sp. American: Lema vittata Fasr., Cuv. R. Ani., éd. il., Ins. Pl. 71, fig. 2; 
Lema cuprea Fasr.; Lema nitidula Fasr.; Megascelis flavipes Dis. ; 
—Megascelis enea STURM, Catalog. meiner Insectensamml. 1826, p. 80, Tab. 
LVato sO, ercs 
Criocerts GEOFFR., Lema FAsr. in part. Antenne scarcely 
longer than head and thorax. Hyes emarginate. 
Crioceris Larr. Posterior femora scarcely incrassated or similar 
to the rest. 
Sp. Crioceris merdigera Fasr., Ent. Syst., Lema merdigera Fase. Syst. 
Eleuth., Chrysomela merdigera L., Reaum. Jns. 1. Pl. 17, figs. 1—13, 
Voxt Coleopt. 1. Tab. 29, fig. 1, PANZER, Deutschl. Ins. Heft 45, Tab. 2, 
