!)4<S FAMILY L. SCAi;.\l!.K]D.K. 



LeConte- "Short Studies of X. Amer. Coleoptera," in Trans. 

 Amer. Eiil. Soc., Vill, i>.so. A synopsis of the genus 

 If<>l>liu is given on pages 11)1-1 !)4. 



7/o/-;/. "Revision of the F. S. Species of Oehodi-us and other 

 Genera of Sear;il>a-ida'," iii Trans. Anier. Ent. Soc., V, 1S7H. 

 The genera JA/rrm/m-/////?s- and Dichelonycha arc treated on 

 pages 183-192. 



Horn. 'Revision of the Species of Lachnosterna of America 

 North of Mexico," in Trans. Amer. Ent. Soc., XIV, 1887, 

 209-296. 



t, Joint B. "Notes on La<:lntos!cn>a fused," in, Insect Life. 

 I, 1888, ISO-is:,. 



i, Joint B. "Sonic NC\\- Species of Lachnosterna," in Ent. 

 Amer., V, 1889, 93-99. 



i, Joint B. "Notes on the Species of Lachnosterna of Tem- 

 perate Xorth America with Descriptions of Xe\v Species, 1 ' in 

 Proc. IT. S. Nat. Mns., XI. 1888, 481-525, Pis. XLVIII-LX. 



/'til!, H. C. "Notes on Dichelonycha and Cantharis with De- 

 scriptions of new Species in other Genera," in Trans. Amer. 

 Ent, Soc., XXVII, 277-292. 



Full. II. ('. "Revision of the Species of Diplotaxis of the 

 United States." i,, Trans. Amer. Ent., XXXV, 1909, 1-97. 



KEY TO IXI1IAXA (IK.NKHA OK MEI.OLONTHIN.K. 



(/. Middle and hind tibia with only one spur, this sometimes obsolete: 



tarsi without seta>be:iring process between the claws: hind tarsi with 



a single claw; body scaly. XVIII. HOPLIA. 



aa. Middle and hind tibiro with two spurs: all tarsi with two equal claws 



and a distinct seta-bearing process between them. 

 1>. Form elongate, slender: colors metallic green or bronzed I at least in 



part) or dull yellow. 



c. Elytra pubescent, not densely scaly: claws chelate. i. e.. capable 

 of being folded along the last joint of the tarsi. 



XIX. DICHELONYCHA. 



<<-. Elytra densely covered with elongate yellowish scales; tarsal claws 

 not chelate. XX. MACRODACTYLUS. 



lilt. Form robust, heavy: color brownish, sometimes iridescent. 



'/. Ventral segments five: elytra either uniformly and rather finely 

 punctured, or with punctured stria 2 . XXI. DIPLOTAXIS. 



'/</. Ventral segments six. 



e. Elytra with rather indistinct hut regular sulci or grooves on the 

 disk: ventral segments free: si/.e small, not over 10 mm. 



XXTI. SERICA. 



<<. Elytra without stria 1 or grooves ever the great portion of the 

 disk: ventral segments connate: si/.e larger. 11..". or more mm. 



XXIII. LACHNOSTERNA. 



