INTRODUCTION. XX.WU 



4. Middle cox.ie not voiy jtroiiiiiicnt ; 



Antennae received in grooves. (p. 393) MoNOMMiDiK, 



AntennsD fre<! ; 



Thorax margined at sides ; disk with basal impressions. 



(p. 394) Melandkyida". 

 Thorax not margined ; disk not impressed at base. 



(p. 401) Pythipa:. 

 Middle cox;e very prominent ; lateral suture ot prothorax wanting. 



(p. 404) tEi)EMEKin.i:. 



5. Head prolonged behind and gradually narrowed. 



(p. 405) CEPHALOIbVE. 



Head suddenly narrowed behind ; 



Lateral suture of thorax wanting. 6. 



Lateral svrture distinct ; base as wide as the elytra; 

 Antennae filiform ; 



Hind coxae laniiniform. (p. 406) Mokdellid^. 



Hind coxae not laminiform. (p. 399) Scraptiiui, 



Antennse fiabellate '^ , subserrate 9 • (p- 424) EvanioaTlnl. 



6. Tarsi perfect, with distinct claws ; eyes normal ; 



Prothorax at base narrower than the elytra ; 



Hind coxie not prominent. (p. 409) Antuicid-'e. 

 Hind coxae large, prominent ; 



Claws simple; head horizontal. {\). 413) Pyrociiroid^. 



Claws cleft or toothed ; front vertical. (p. 415) Meloid.i:. 



Prothorax, at base, as wide as the elytra. fp. 423) RiiipipnoRin.K. 



Tarsi without claws ; eyes pedunculated. (p. 425) S-rYLOPiDyE. 



The only families not represented in our fauna are Tricteno- 

 tomidfe and Niiionidai. The first can hardly l)e placed iu line 

 in the series, and wliile obviously a member of it, a tendency is 

 shown to recall certain Cerambycide as well as Cucujide char- 

 acters. The NilionidiB are well placed next the Pythidas by 

 Lacordaire, from which they differ by their almost hemispherical 

 form and the fourth tarsal joint eniarginate. 



RHYNCHOPIIOR.V. 



This sub-order may be divided into three series, as has been 

 done by Dr. LeConte, but as the typical modifications are but 

 few, it would seem to serve a more useful purpose to present the 

 fantilies as a connected series. No extraneous material has been 

 introduced, except Aglycideres, which we have placed as a sepa- 

 rate family, nearly allied to Anthribida?, but with strono; Clavi- 

 corn tendencies. The Rhynchophora thus connect themselves 



