152 THE entomologist's RECORD. 



8. Strise of elytra strongly punctured. 



Thorax much broader than long, with sides dilated behind the deep 

 apical constiiciion and distinctly narrowed towards base, central 

 furrow absent or obsolete ; form short and broad. 



B. limosux, Gyll. 

 — Strias of elytra feebly or not at all punctured (except in rare forms of 

 frit). 



Thorax not as in llmosu.i. 9. 



9. Thorax with three more or less evident depressions in the well marked 



and deep apical constriction, the central depression connected by a 

 broad shallow furrow with another deeper depression at the base of 

 thorax, forming thus a broad central furrow ; form rather broad. 



B. brech, Gyll. 

 — Thorax without evident depressions or fovese, and with at most a fine 

 central furrow ; apical constriction feeble. 10. 



10. Scape inserted near middle of rostrum. 



Form elongate ; thorax with fine central furrow ; elytra with 

 spots, a common transverse spot near apical third being the 

 most conspicuous. 



B. tempestUnis, Herbst. 

 — Scape inserted nearer to apex. 



Form less elongate ; thoracic furrow obsolete or absent. 11. 



11. Three first joints of posterior tarsi elongate and subequal. 



Elytra with finely punctured strise and (in a fresh state) a whitish 

 punctiform spot in the 3rd interstice behind middle ; hind 

 tibiffi long, strongly and regularly curved at apex, with very 

 long apical spur. 



B. frit, Herbst. 

 — Second joint of posterior tarsi distinctly shorter than first. 



Elytra with simple stride and variable markings, which usually 

 take the form of transverse spots, but are sometimes altogether 

 wanting ; hiiid tibiae shorter and thicker, less regularly curved 

 with only moderate apical spur. 



/>'. claudicans, Boh. 



12. Surface of elytra varied with grey spots. 



Elytra slightly flattened, with alternate interstices raised. 



B. Itttulosus, Gyll. 

 ^Surface of elytra of nearly uniform colour. 



Elytra convex with alternate interstices hardly differing from 

 the others. 



B. (liylyptiis. Boh. 



13. Scape of antennffi inserted near the middle of rostrum; 3rd joint of 



tarsi broader than second, but scarcely bilobed. 



B. teinpentivux, Herbst var. Heasleri. 

 — Scape of antennae inserted near apex of rostrum ; 3rd joint of tarsi 



distinctly bilobed. 14- 



14. Upper surface of tarsi glabrous ; prosternum excavated in front. 



A. Tarsi black. B. glahrirostris, Herbst var. nijritarsis, Th. 

 A A. Tarsi red. 



a. Size snuxller ; 3rd joint of posterior tarsi as broad as long ; 

 interstices of elytra narrower and alternate ones more 

 raised. 



glahrirostrin, type form, 

 aa. Size larger; 3rd joint of posterior tarsi elongate ; inter- 

 stices of elytra bi'oader, alternate ones scarcely raised. 



glabrirostris, var. 

 — Upper surface of taisi distinctly pubescent; prosteruum flat ; elytral 

 callosities obsolete. 



B. [Hydronovms) alisinatix, Marsh. 



B. PETRo, Herbst, vi., 8G6.— Bedel, vi., 104 and 276. Aiibei, 

 Cussac, Ann. See. Ent. Fr., 1851, 206.— Bris., Mon., 508.— Fowler, v., 

 288. — Readily distinguished from all our other species by the 

 apparently solid club of the antennfe. This peculiarity has led 

 Acloque ("Faune de France") to place it in the Cossonidae, a group 

 with Avhich it has no affinity whate\er. The insect has only been 



