20 CARABID^E. BRACHINUS. 



drico, aut subovato, apice truncato. Mandibulse firma, acuta. 

 Labrum brevissimum, angulis anticis rotundatis, apice sub- 

 sinuatum. Tarsi articulo quarto integro ; unguiculis simpli- 

 cibus. 



1. B. crepitans : rufo-ferrugineus ; elytris substriatis, nigro- 

 subcyaneis ; antennarum articulo tertio quartoque abdomine- 

 que infuscatis. 



Carabus crepitans, Linn. S. N. 2. 671. 



Brachinus crepitans, Fab. S. El. 1 . 219. Gyll. Ins. Suec. 2. 1 76. 



Dej. Spec. 1.318; Icon. 1. 161.pl. 17 Sturm, D. F. 7.79. 



Steph. Mand. 1. 34, et Manual, p. 9. Erichson, Kafer, 26. 



Heer, Faun. Helv. 14. 



B. immacuHcornis, Steph. Mand. 1. 177, et Manual, p. 9. 

 B. explodens, Steph. Mand. 1. 35, et Manual, p. 9. 

 B. glabratus, Steph. Mand. 1. 36, et Manual, p. 9. 



Ferruginous red, elytra black, blue-black, steel-blue or green- 

 ish, pubescent. Head oblong, punctured behind, having an 

 oblong rugose fovea on each side in front ; eyes large and 

 black; basal joint of antennje bright red, second, third and 

 fourth joints dusky, the rest dull pale red. Thorax oblong- 

 cordate, narrow, acutely margined, posterior angles slightly pro- 

 minent, disk rugosely punctate, with a fine central stria, and a 

 faint transverse line at the base ; scutellum pitchy red. Elytra 

 oblong-ovate, broad, shoulders rounded, sides dilated behind the 

 middle, apex truncate, very indistinctly striated, interstices finely 

 punctured ; head and thorax beneath red ; breast and abdomen 

 pitchy, finely punctured, and clothed with golden pile ; legs 

 rusty red and pubescent. Length 3-4 lines. 



This little Bombardier is very abundant in the south of 

 England; it occurs in profusion in the Undercliff, Isle of Wight ; 

 and both in size and colour varies considerably, in the latter 

 respect from dull black to steel-blue. The insects recorded by 

 Mr. Stephens under the names immaculicornis, explodens and 

 glabratus must be referred to this species. The insect is found 

 also in the counties of Wexford and Louth in Ireland. 



2. B. sclopeta : ruber ; elytris subl&vibus, cyaneis, suturd ab- 

 breviatd ferrugined. 



Carabus sclopeta, Fab. S. El. 1. 220. 



Brachinus sclopeta, Clairv. Ent. Helv. 2.41 .Dej. Spec. 1 . 322 ; 



Icon. 1. 167. pi. 18. Sturm, D. F. 7. 82. Steph. Mand. 1. 



36, et Manual, p. 9. Curtis, Ent. pi. 554. Heer, Faun. 



Helv. 15. 



Rusty red, elytra cyaneous and pubescent, with the suture 



