COLEOPTERA. 



499 



The Mordellids. p. 586 Family MORDELLID.E. 



The Anthicids. p. 586 Family ANTHICID.E. 



The Pyrochroids. p. 586 Family PYROCHROID^E. 



The Blister-beetles, p. 586 Family MELOID^E. 



The Rhipiphorids. p. 589 Family RHIPIPHORID^E. 



The Stylopids. p. 589 * Family STYLOPID^E. 



AA. THE RHYNCHOPHORA (Rhyn-choph'o-ra) or Snout- Beetles. 

 Beetles in which the head is more or less prolonged into a beak, 

 and in which the palpi are short and rigid. 



The Rhinomacerids. p. 590 Family RHINOMACERID;E. 



The Rhynchitids. p. 591 Family RHYNCHITID^:. 



The Leaf-rolling Weevils, p. 591 Family ATTELABID^E. 



The Byrsopids. p. 591 Family BYRSOPID^E. 



The Scarred Snout-beetles, p. 592 Family OTIORHYNCHID^E. 



The Curculios. p. 593 Family CURCULIONID^E. 



The Brenthids. p. 594 Family BRENTHID;E. 



The Bill-bugs, p. 595 Family CALANDRID^E. 



The Engraver-beetles, p. 596 Family SCOLYTID^E. 



The Anthribids. p. 598 Family ANTHRIBID^E. 



CLASSIFICATION OF THE COLEOPTERA. 



{For Advanced Students.) 



In order to use the table for determining the families of beetles it 

 is necessary that the student should become familiar with certain 



FIG. 601. Head of Harpalus : a, dorsal aspect ; 6, ventral 



aspect; i, occiput; 2 epicranium; 3. eye; 5, clypeus; 6, FIG. 602. Head and pro- 

 gula; 7, antenna; 8, labrum; 10, mandibles; \id, maxillary thorax of Rhynchophorus: 

 palpus; IT/, palea or outer lobe of maxilla; 12*, submen- 

 tum; i2<t, 1; 

 suture. 



, 



labial palpus; cs, clypeal suture; g-s, gular 



imeron;/. 



xa; em, epimeron; 

 femur; gs, gular sutur 

 ?. prosternum 



terms not defined in the discussion of the external anatomy of insects 

 on pages 56-67. The following notes are therefore given as a supple- 

 ment to that discussion. 



The Head. Two of the sclerites that enter into the composition 



