660 PROCEEDINGS OF TUE NATIONAL MUSEUM. vol. 58. 



Optaleus CandI:ze. 



1857, Monogr. Elat., vol. 1, p. 86. Four species. 



Type. — Optalens limbatus Cand^ze. (Present designation.) 

 Orithales Kiesenwetteb. 



1863, Naturg. Ins. Deutschl., vol. 4, p. 287. 



Type. — Elater serraticornis Paykull, Faun. Suec.,vol. 3, p. 21, 1800. (Monobasic.) 

 Note. — Subsequent writers have followed Kiesenwetter in considering 



this a subgenus of Ludius Eschscholtz [Corymbites Latbeille). 

 Orthathous Reitteb. 



1905, Bestim. Tab., 56, pp. 34, 80. Nineteen species. 



Type. — AtJious jejunus Kiesenwetter, Naturg. Ins. Deut., vol. 2, p. 326, 1858. 

 (Original designation.) 

 Orthostethus Lacordaire. 



1857, Gen. Col., vol. 4, p. 217. 



Type. — Aphanobius infuscatus Germab, Zeit. f. d. Ent., vol. 5, p. 183, 1844. 

 (Original designation.) 

 Osorno CandI:ze. 



1881, Elat. Nouv., fasc. 3, p. 100. 



Type. — Osorno ambiguus Cand^ze. (Monobasic.) 

 [Otocryptus (Caudeze) Sharp, typ. err.] = Octocryptus CandI;ze. 



1892, Zool. Rec, p. 128. 



Type. — Octocryptus cardoni CANDi:zE. 

 Ovipalpus SoLiEB. 



1851, Gay. Hist. fis. Chile, Zool., vol. 5, p. 9. 



Type. — Ovipalpus pubescens Solier. (Monobasic.) 

 rOxycleidius Eschschoxtz nomen nudum] = Cyathodera Blanchard. 



1833, Dejean Cat., ed. 3, p. 89. One manuscript name. 

 lS36,Silbermann, Rev. Ent, vol. 6. (No species.) 



Type. — Cyathodera longicornis Blanchabd, Voy. d. Orb., p. 130. 



Note. — Gemminger and Plarold (1S69) reduce the Dejean manuscript 

 species 0. nigriceps to synonomy under the above type. 

 [Oxyclidius (Eschscholtz) Scudder emend.] = (Oxycleidius Eschscholtz) = 

 Cyathodera Blanchabd. 



1882, Nomen. Zool., p. 226. 



Type. — Cyathodera longicornis Blanchabd. 

 Oxygonus LeConte. 



1863, List. Col. N. A., p. 48. 



Type. — Elater obesus Say, Journ. Acad. Nat. Sci. Philad., vol. 3, p. 168. 

 1823. (Monobasic.) 



Note. — Cand§ze (1863) reduces the type to synonomy under Agriotes 

 mancus Say, but later (1891) recognizes the genus and type as valid. 

 Cxylasma Broun. 



1881, Man. New Zealand Col., p. 679. Two species. 

 Type. — Oxylasma pannosum Broun. (Original designation.) 

 Oxynoptems Hope. 



1842, Proc. Zool. Soc. London, p. 76. Four species. 



Type. — Elater mncronatus Olivier, Journ. Hist. Nat, vol. 1, p. 262, 1792. 

 (Designation Cand&ze, Monogr., vol. 1, 355, 1857.) 

 [Oxysternus Latreille, not Godet, 1833, Histeridae]=Hemiop8 Laporte. 



1834, Ann. Soc. Ent. France, vol. 3, p. 164. Three species, two of which 

 are manuscript names. 



Type. — Elater crassus Gyllenhal, Schonherr, Syn. Ins. App., p. 135, 1817. 



(Monobasic.) 



Note. — Candeze (1891) reduces the genus to synonymy under Plectros- 

 ternus Lacordaire, and the type he refers to Hemiops Laporte. 



