474 CLASS vn r. 



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 antennae under the 

 thorax, and remains so immoveable that it might be supposed to be dead. 

 Cassida equestris FABB., PANZER, Deutschl Ins. Heft 96, Tab. 5 ; 4'" long; 

 differs from the preceding species by the yellow feet, and a yellow margin 

 at the abdomen. Cassida ndbilis, 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. HOPE 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. HOPE, Obser- 

 vations on ike Tortoise or Shield- Beetles, Annals of Natural Hist. in. 1839, 

 pp. 92 100, PI. iv., where also some new genera are proposed as divisions 

 of this numerous group. 



Imatidium FABR. Head received in the thorax, emarginate an- 

 teriorly. 



Family XL VIII. Eupoda s. Parameca (Crioceridce LEACH). 

 Tarsi as in the preceding family. Body oblong. Antennae 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 DEJ., LATE. Antennae almost of the length of body, 

 with joints slender, elongate. Mandibles truncated, thick. 



Sp. American: Lema vittata FABR., Ccv. R. Ani., ed. ill, Ins. PI. 71, fig. 2; 

 Lema cuprea FABR. ; Lema nitidula FABR. ; Megascelis flavipes DEJ. ; 

 Megascelis cenea STURM, Catalog, meiner Insectensamml. 1826, p. 80, Tab. 

 iv. fig. 36, &c. 



Crioceris GEOFFR., Lema FABR. in part. Antennas scarcely 

 longer than head and thorax. Eyes emarginate. 



Crioceris LATR. Posterior femora scarcely incrassated or similar 

 to the rest. 



Sp. Crioceris merdigera FABR., Ent. Syst., Lema merdigera FABR. Syst. 

 Eleulh., Chrysomela merdigera L., BJBAUM. Ins. in. PL 17, figs, i 13, 

 VOET Coleopt. ii. Tab. 29, fig. i, PANZER, Deutschl. Ins. Heft 45, Tab. 2, 



