upon the British Elateridce. 15 



My three specimens of this rare species were bred at Windsor, 

 by Mr. C. Griesbach. This is the true E. nigi-imtx, which is in- 

 cluded in the group comprising E. sanguineus, and the other 

 scarlet and black species. They form the genus Ampedus of De- 

 jean, but in Eschscholtz's works they represent the genus Elatcr. 



Sp. 5. Jplotarsus marltimus, Curtis in " Annals of Natural His- 

 tory " for 1840, vol. V. p. 277. (PI. II. fig. 5.) 



Shining bluish black, sparingly and indistinctly pubescent. An- 

 tennae much longer than the thorax (fig. i), basal joint stout, glo- 

 bose, second minute, the following compressed, elongated, obovate 

 and truncate; third and fourth nearly of equal length. Head 

 flattened, thickly but not regularly punctured, a circular impres- 

 sion above the clypeus, with a central channel ; eyes not touching 

 the thorax; clypeus semicircular, margined, not concealing the 

 mouth ; palpi clavate-truncate (fig. k). Thorax suborbicular, 

 convex, thickly but faintly punctured, hinder angles prominent 

 and very acute, pectoral spine elongate-conic, cup-shaped at the 

 base, scutellum cordate. Elytra elliptical, depressed, broader 

 than the thorax and more than twice as long, thickly and minutely 

 punctured, and strongly striated. Coxa3 and trochanters ferru- 

 ginous and ochreous; legs slender, especially the tarsi, which are 

 simple and pitchy, the fourth joint not very short. 



2 lines long, | broad. 



I first discovered this very distinct little Elater under rejecta- 

 menta at Broughton, on the Lancashire coast ; this was on the 

 30th June, 1827: the Rev. Mr. Little subsequently took it at 

 Raehills, and I have heard it has also been found on Skiddaw, 

 the end of April. 



Mr. Stephens gives this as a doubtful variety of Scricosomiis 

 bnmneus; it is therefore necessary to say that A. maritinms will 

 not associate with that genus. It appears to be an Ajilotarsus, 

 and it approximates to Elater rufipes and E. testaceus, Fab.; both 

 of which are included in the genus Cardiophonis by Dejean and 

 Redtenbacher, but they have a very different habit to the typical 

 species. 



Sp. G. Cardiophonis formosus, Curtis, in Ann. Nat. Hist. vol. v. 

 p. 278. (PI. II. fig. 6.) 

 Black, shining; head small, with variolated punctures; clypeus 

 rounded, margined. Thorax entirely red, somewhat bell-shaped, 

 thickly punctured like the head; the angles trigonate, but obtuse. 

 Elytra scarcely twice as long, with firmly punctured strice, very 

 deep at the base ; before the middle is a double crescent-shaped, 



