78' LtrCANTD^. 



dadognathus Burm., Handb. Ent. v, 1847, p. 364 {new name for 



Macrognathus Hope & Westw.)- 

 Prismoynathus Motsch., Schreneks Reise, 1860, p. 138. (Type, 



dauricns Motsch.) 

 FsalidogtMtlms, id.. Etudes Ent. x, 1861, p. 15. (Type, inclinattis 



Motsch.) 

 Serrognathus, id., loc. cit. (Type, titanus Boisd.) 

 Macrodorcas, id., loc. cit. (Type, rectus Motsch.) 

 Psalidorenius, id., op. cit. xi, 1862, p. 55 (new name for Psuli- 



dognathus). 

 Cijciorasis Thorns., Ann. Soc. Ent. France (4), ii, 1862, p. 397 (new 



name for Cyclophthalvius Hope & Westw.). 

 Eurytrachelus, id., op. cit. p. 421. (Tjrpe, titgin^ Hope.) 

 He.misodorcus, id., loc. cit. (Type, nepalensis Hope.) 

 RhiBlus Parry, Trans. Ent. Soc. Lend. (3) ii, 1864, p. 10. (Type, 



iveslwoodi Parry.) 

 Ditomoderus, id., op. cit. p. 45. (Type, mirabilis Parry.) 

 Rhxtulus We.stw., Trans. Ent. Soc. Lend. 1871, p. 353. (Type, 



crenatus Westw.) 

 Metallactus Albers, Deutsche Ent. Zeitschr. 1884, p. 301. (Type, 



parvulus Hope & Westw.) 

 MetaUactulus Kits., Notes Leyden Mus. vii, 1885, p. 54 (new name 



for Metallactiis Albers). 

 Falcicomis Planet, Le Natural, xvi, 1894, p. 44. (Type, groulti 



Plan.) 

 Digonophorus Wat., Ann. Mag. Nat. Hist. (6) xvi, 1895, p. 157. 



(Type, elegans Parry.) 

 Metopodontus subg. Hoplitocranum Jakowl., Horaj Soc. Ent. Koss. 



XXX, 1896, p. 172. (Type, Jenfcirm Westw.) 

 Oonoinetopus Houlb., Insecta, v, 1915, p. 19. (Type, triupicalis 



Houlb.) 

 Pelecognathus, id., op. cit. p. 52. (Type, prosopocadoides Houlb.) 

 Durelius, id., op. cit. p. 92. (Type, derelictus Parry.) 

 Tetrurthrins Did., Encycl. Ent., Col. ii, 1926, p. 28. (Type, 



castaneus Did.) 

 Eurytrachellelus [sic, not -cUus], Did., Col. Luc. ilu Globe, 1931, 



p. 185 (new name for Eurytrachelus Thorns, not Motsch.). 



Type, Sairabieus parallelipipediis L. 



Ranffe. Almost world-wide. 



Shape various, the two sexes generally dilToring greatly 

 hut sometimes, as in D. cylindricus, etc., very similar. Body 

 generally almost without hair, exeej)t upon the legs and mouth, 

 but oecasionally {D. velntinuH, ursulufi) clothed with short 

 setae. Legs rather slender. Front coxae well separated b.\- 

 the prosternum, which is sometimes broad and flat behind, 

 sometimes elevated, compressed, pointed or produced. Front 

 tibia rather irregularly toothed externally, the t\\) bifurcated 

 in the male and generally in the female, but sometimes palmate 

 in the hitter [l. e. divided into tliree or four short lobes). 

 Middle and hind tibiae nearly always in the female (although 

 not in f). irinibcrlei/i) and frequently in the male, bearing a 

 single shar[) s})ine a little past tlie middle of the outer edge, 

 never with more than one sjiine. Tarsi slender, with h^ng 

 claws and pulvillus. Antemiai 10-johited, with 3-jointcd club, 



