Mr. A. Murray's Monograph of the genus Catops. 15 



up, so that there is the commencement of a deepened line on each 

 side. The upper side is covered with a moderately dense golden- 

 yellow pubescence, and tolerably abundantly and finely punctured, 

 pitchy black, the outer edges and the posterior angles reddish brown, 

 with a more or less distinctly marked dorsal line, slightly im- 

 pressed on both sides near the base. The elytra are only very 

 feebly expanded, sometimes not wider than the base, pressed flat 

 at the suture, slightly striated, finely and densely punctate, with 

 a fine silken pubescence, ferruginous. The darker individuals 

 are somewhat darker towards the apex near the suture. The 

 legs are ferruginous red. 



" Note I. — A not unimportant sexual distinction in this and 

 the kindred species is afforded by the formation of the posterior 

 trochanters. I have already (Stett. Ent. Zeit. xii. p. 284 fi".) ex- 

 pressed my opinion upon them, but by persevering investigations 

 I am now able to add something to what has been already said, 

 by way of completion. Male examples both of C. angustatus, 

 Fab., and C cisteloides, Frohl. {castaneus, Sturm), occur with 

 slightly developed simple acuminate posterior trochanters, with 

 the difference however, that the trochanters in C angustatus are 

 narrower and longer than in C. cisteloides, and their point is far 

 more acuminate. But there are moreover in both species males 

 with very different, strongly developed trochanters. Nevertheless 

 the principle of development is wholly different in the two spe- 

 cies. The highest step of the development of the trochanters 

 in the C. cisteloides, is that they are armed at the inner side with 

 a projecting tooth more or less curved, and in the angustatus, 

 that they are widened and lengthened into a gouge-chisel form ; 

 thus it is clear that a male of the angustatus can never come 

 before us with a tooth at the inner side of the trochanter, it 

 being impossible to form a transition-step to the gouge-chisel 

 form. 



" Note II. — I think I have found a second interesting sexual 

 distinction of the females of the C angustatus, F., in the single 

 sharp acuminate posterior angles of the elytra. The specimens 

 of Erichson (to be found in the Royal collection of this place 

 (Berlin)) are represented as females of C. angustatus ; in the 

 same way a collection of females here agree perfectly with the 

 males, but the latter have rounded elytra. One female taken at 

 Cassels (alas, somewhat injured), which has been kindly sur- 

 rendered to me by Herr Richl, has likewise acuminate elytra. A 

 larger series of this generally rare species would be required to 

 allow us to decide without doubt whether perhaps one of the 

 species very similar to C. angustatus exists, of which the male 

 likewise may have acuminate elytra. However, I consider this 

 highly improbable. «iiii*5t>iti c^jM^hi'^ 



