Royal Physical Society. 119 



This species is almost of the size of tristis, which it comes very- 

 near in form and colour. It is however a little more elongated 

 and generally deeper in colour, and the antennse are less clavate ; 

 but the principal difference is in the form of the thorax, which 

 is nearly as long as broad and rectilinear on the sides, in fact 

 nearly square; the posterior angles also are straighter. The 

 lateral margins are a little more rounded in the males than in 

 the females, reminding us of what we have already surmised in 

 speaking of tristis and grandicollis, but they are always less so 

 than in tristis. 



At first I was disposed to consider this a variety of tristis, but 

 on closer examination I became satisfied that it is a distinct 

 species ; at least, that we must hold it so until a closer study of 

 its affinities and alliances shall teach us otherwise. 



17. C. chrysomeloides, Panz. 



Helops chrysomeloides, Panz. Fn. Ger. 57. 1. 



Choleva chrysomeloides, Latr. Gen. Crust, et Ins. 29. 4; Spence, Linn. 



Trans, xi. 146. 7. 

 Catops chrysomeloides, Erichs. K'af. d. M. Br. i. 697- 7 « ; Sturm, Deutschl. 



Fn. xiv. 22. 10. t. 275. f. b. B ; Heer, Fn. Helv. 380. 9 ; Redt. Fn. 



Aust. 144. 10; Kraatz, Stett. Ent. Zeit. xiii. 432. 16; Fairm. & 



Laboulb. Fn. Ent. Fr. i. 302. 



Ovatus, nigro-piceus ; antennis abrupte clavatis, Fig- 22. 



clava nigra nitidula, articulo ultimo ohlongo ; 



thorace transverso, basi latiore, angulis posticis 



rectis; elytris obsoletissime striatis. 

 Lone:. 2 lin. 



Ovate, convex ; deep brown or black, with a 

 pretty dense pubescence. Antennse shorter than 

 head and thorax, strongly and abruptly clavate, 

 the base (first six joints or so) red, the club black or deep 

 brown, the fourth, fifth and sixth joints not longer than thick, 

 also not thicker than those preceding, those following consider-, 

 ably thicker, the seventh, ninth and tenth somewhat thicker than 

 long, brown ; the eleventh oblong oval ; the eighth narrower 

 than the other joints of the club, very short. Thorax one-half 

 broader than long, rounded on the sides, narrowed a little more 

 in front than behind ; at the posterior margin a little narrower 

 than the base of the elytra ; the posterior angles right-angled, 

 pointed; the posterior margin lightly sinuated on each side, 

 covered with a coarse yellowish grizzly pubescence. Elytra like 

 the thorax, very finely and densely punctate, very indistinctly 

 striated, with an ashy grey bloom • no yellow pubescence. Legs 

 ferruginous red, often brown on the thighs. 



