Royal Physical Society, 105 



sions on the disk of the thorax, and the want of the produced 

 posterior angles of the thorax distinguish it from the smaller 

 specimens of nigricans, Spence. Its antenna? only slightly- 

 thickened, as well as its smaller size, distinguish it from chry- 

 someloides, Spence. From most of those which have a decided 

 yellow pubescence on the thorax it is distinguished by the want 

 of yellow pubescence along the base of the elytra. This separates 

 it from tristis, Panz., including abdominalis, Rosenh., montivagus, 

 Heer, longulus, Kelln., grandicollis, Erichs., and rotundicollis, 

 Kelln., and from neglectus, Kraatz, and nigrita, Erichs. Its 

 yellow pubescence also is finer, shorter and more delicate than 

 in any of these. The only remaining species with which it may 

 be confounded is morio, Erichs., but the more elongate shape 

 and slenderer form of morio and the difference in the posterior 

 angles of the thorax distinguish it. Morio has not got the 

 slight acumination which coracinus has at these angles, and in 

 it they are gently obtuse instead of being at first right-angled. 

 The thorax in morio is also natter. 



It is found in Scotland and England, and in various parts of 

 the Continent. 



12. C. morio, Fab. 



Catops morio, Fab. Syst. El. ii. 564. 4. 



Choleva dissimulator, Spence, Linn. Trans, xi. 150. 11. 



Catops sericeus, Gyll. Ins. Suec. iv. 313. 1-2. 



morio, Erichs. Kaf. d. M. Br. i. 240. 11 ; Sturm, Deutschl. Fn. xiv. 



29. 14. t. 276. fig. b. B; Heer, Faun. Helv. 382. 14; Redt. Faun. 



Aust. 144.13; Kraatz, Stett. Ent. Zeit. xiii.431. 13; Fairm.& Laboulb. 



Fn. Ent. Franc, i. 301. 8. 



Obion go-ovalis, niger; antennis obsolete clavatis, „. ,, 

 articulis duobus primis ultimoque et pedibus 

 ferrugineis; thorace basi apiceque latitudine 

 subsequali, angulis posticis obtusis; elytris ob- 

 soletissime striatis. 



Long. If lin. 



The antenna? are as long as the head and 

 thorax, imperceptibly but not greatly thickened 

 towards the point ; the first two joints are ferru- 

 ginous yellow, the rest, with the exception of the 

 last, blackish, the last joint yellow : rarely the whole antennae 

 are ferruginous, which Erichson observes is the case with the 

 examples in Fabricius's collection. The body is black ; the 

 head densely and distinctly punctate ; the parts of the mouth 

 red. The thorax is rather depressed and is thickly and finely 

 punctured, with a fine yellowish-grey dense pubescence ; it is 

 half as broad again as long; lightly rounded on the sides, 



L 



