RILEY ON A NEW GENUS IN MELOID^. 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 (PI. V., Fig. 13, c). 



Iff- 40- T\\e^ variation from the more complex to the 



Cjj^t\^\^^^^^TOT^ 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 

 i ^^" the upper and thicker portion is strongly ser- 

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

 upper portion becomes simple (3). In Calos- 

 r. ^ pasta, Tegrodera, Eupompha, Rhodaga, the lower 



division is shorter than the upper, and connate 

 ^ ^^ with it (c). In /?;r(f<7.$/>a^/a the lower part is still 



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

 ^ < ~^ Megeira^ and allied genera, the faint basal suture 



is obliterated, and the hook varies somewhat in 

 X size ((?). In Cordylospasta the hook is more 

 f acute and nearer the tip (y") ; while in Hornia 



the claw is entirely simple (^). 



o The following table of our N. A. Meloini 



Tarsal Claws of .11 -i'n j.- /• ^l 1. • i. 



Mkloid^. Will serve as an amplincation 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 ii-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. 



* Psfudomtloe (Kairm. &Germ.) is, as has been recorded by Dr. Horn ( Zool. Record, 

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



