Mr. A. Murray^s Monograph of the genus Catops. 155 



says that the lateral margins are a little more rounded in the 

 males than in the females, but always less so than in tristis. 



I have seen one female example of this species, in the collec- 

 tion of M. Chevrolat. At first I was disposed to consider it as 

 a variety of tristis j 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. Kaf. d. M. Br. i. 697- 7 « ; Sturm, Deutschl. 



Fn. xiv. 22. 10. t. 275. f. 6. 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 ahrupte clavatis, Fig. 22. 



clava nigi'a nitidula, articulo ultimo oblongo ; 



thorace transverso, basi latiore, angulis posticis 



rectis; elytris obsoletissime striatis. 

 Long. 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, wdth an ashy grey bloom ; no yellow pubescence. Legs 

 ferruginous red, often brown on the thighs. 



This very distinct species is distinguished at once by the large 

 black club of its antennae. When seen along with other species, 

 its gloomy black opake appearance, combined with a larger club 

 of the antennse than any other species, at once point it out. The 

 only other large black species in this group are picipes and 

 nigricans, and neither of these has heavy thick-clubbed antennse. 

 From the other thick-clubbed species (none of which however 



