500 CLASS VIII. 



a) Antennae with eleven joints. 



Lytta FABR., Caniharis GEOFFR., OLIV., LATR. Antennse 

 straight, filiform, longer than head and thorax. Body oblong. 



a) With penultimate joint of tarsi entire. 



*) With elytra at the apex attenuated, subulate, dehiscent. 



Sitaris LATR (Apalus FABR. J ) 



* *) With elytra covering the whole abdomen above, not attenuated. 



Sub-genera : Gnathium KIRBY, Nemognatha, ILLIG., LATR., (with 

 external process of maxillae filiform, exsert), Zonitis FABR., Tmesi- 

 dera WESTW., Cantharis LATR. 



Sp. Lytta vesicatoria, Meloe vesicatorius L., GEOFFE. Ins. I. PI. VI. fig. v., 

 DUMERIL Cons. g6n. s. I. Ins. PI. 10, fig. 6, BRANDT u. RATZEBURG 

 Mediz. Zool. II. Tab. xvin. figs, i 6, &c. Spanish Fly; green gold- 

 glancing, with black antennae, a broad head, channelled above, thorax 

 quadrangular, broader forwards, length 10'". The blistering power of this 

 insect renders it very important as a remedy in medicine. Other species 

 also of the Meloeida possess the same property, which however, as is 

 asserted, is not perceived in Apalus. The female lays her eggs in the 

 ground ; the larvae make their appearance after about three weeks, like 

 those of Meloe (and of Apalus, which are quite similar to them according 

 to GENE), hitherto known in the first period of their life alone, but not in 

 their further growth. 



Compare C. A. LEN.EUS, Meloe vesicatorius, Diss., in C. LINNJII 

 Amosnit. Acad. vi. pp. 132 147 ; LOSCHGE Beitriige zur Gesch. der Span- 

 iscJten Fliege, Naturforscher xxm. 1788, s. 37 48, Tab. i, figs, i 8; 

 AUDOUIN JRecherches pour servir a I'Histoire nat. des Cantharides, Ann. des 

 Sc. natur. IX. 1826, pp. 31 61, PI. 4-2, 43 (anatomical description) ; 

 BRANDT u. E.ATZEBURG 1. 1. pp. 116 121 and PI. xix. ; KATZEBURG 

 Forst-Ins. x. I. pp. 88 92 &c. 



/3) With penultimate joint of tarsi bilobed. 

 Tetraonyx LATR. 



Comp. LATREILLE in HUMBOLDT et BONPLAND Observ. de Zoolog. et 

 d'Anat. Comp. 1. pp. 160 162, PI. xvi. fig. 7. 



(Enas LATR. Antennse not longer than thorax or scarcely as 

 long, geniculate, with first joint elongate, obconical, the rest broad, 

 short, the last oval. 



Sp. (Enas afer, Lytta afra FABR., LATR. Gener. Crust, et Ins. Tab. X. fig. 10, 

 Cuv. R. Ani. ed. ill., Ins. PI. 54, fig. 9. 



1 J. GENE, Mmoire pour servir a VHist. nat. de I' Apalus bimaculatus et da 

 Cantharides en general. Ann. des Sc. nat. xxm. pp. 138 144. 1831. 



