RILEY ON A NEW GENUS IN MELOID^E. 565 



Coarctate larva with the trophi tuberculous as in Epicauta, but with 

 the lateral ridge but slightly developed, and the skin less firm and show- 

 ing all the wrinkles of the larva (PL V., Fig. 13, c). 



Fig. 40. rpj ie var j at j on f rom the more complex to the 



(^^^\twtw5^ more simple —the degradational tendency in 



^- ; =^ the tarsal claws of the Meloidae is shown by 



outlines in Fig. 40. 



In the Nemognathini the claw is double and 

 "S\ the upper and thicker portion is strongly ser- 

 rate beneath (Fig. 40, a). In the Lyttini, the 

 upper portion becomes simple (b). In Calos- 

 pasta, Tegrodera, Enpompha, Rhodaga, the lower 

 division is shorter than the upper, and connate 

 ^ with it (c). In Poreospasta the lower part is still 

 shorter, connate, and scarcely visible {d). In 

 Megetra, and allied genera, the faint basal suture 

 is obliterated, and the hook varies somewhat in 

 size (<?)• In Cordylospasta the hook is more 

 / acute and nearer the tip {/) ; while in Hortiia 



the claw is entirely simple (g). 



The following table of our N. A. Meloini 

 TAR ME L o, L D A r ° F will serve as an amplification of that given by 

 Dr. Horn in 1863 {Trans. Am. Ent. Soc, vol. ii. p. 139), and show 

 the position of the genus, which I have added. 



A.— Antennae n-jointed. Hind wings obsolete, or near- 

 ly so. 



b. Elytra imbricated ; claws equally cleft Meloe. 



c. Elytra divergent from scutellum ; claws toothed . .Megetra.* 

 cc. Claws simple • • • • Hornia. 



d. Elytral inner margins contiguous at anterior 



third ; claws equally cleft Nomaspis. 



dd. claws with lower part very short and connate. Poreospasta. 



e. Elytral inner margins contiguous their whole 



length and entirely (or nearly) covering the 

 abdomen ; claws equally cleft ; elytra sub- 

 connate Henous. 



ee. Claws toothed; elytra connate and inflated . .Cysteodemus. 

 B. — Antennae 8-jointed, last joint equal to the three 

 preceding. Hind wings feeble. 

 Elytral inner margins contiguous throughout near- 

 ly the entire length ; claws feebly toothed at 

 middle Cordylospasta. 



* Pseudomeloe (Kairm. &Germ.) is, as has been recorded by Dr. Horn (Zoo!. Record, 

 London, 1875. p. 346), but a synonym of Megetra. 



