COLEOPTERA. 497 



DD. THE CLAVICORNIA (Clav-i-cor'ni-a) or Clavicorn Beetles. 



Isomera in which the first ventral abdominal segment is 



visible for its entire breadth, and in which the antennae are 



usually clavate or capitate, but not lamellate. 



The Water Scavenger Beetles, p. 527. 



Family HYDROPHILID^E. 



The Beaver-parasite, p. 529 Family PLATYPSYLLIDA:. 



The Leptinids. p. 529 Family LEPTINID^. 



The Carrion-beetles, p. 529 Family SILPHIDVE. 



The Scydmaenids. p. 531 Family SCYDM^ENID^E. 



The Pselaphids. p. 531 Family PSELAPHIDJE. 



The Rove-beetles, p. 532 Family STAPHYLINID^:. 



The Feather-wing Beetles, p. 533. 



Family TRICHOPTERYGIDJE. 



The Hydroscaphids. p. 533. Family HYDROSCAPHID^E. 



The Sphaeriids. p. 533 Family SPHJERIIDJE. 



The Scaphidiids. p. 533 Family SCAPHIDIID^:. 



The Phalacrids. p. 534 Family PH ALACRID^E. 



The Corylophids. p. 534 Family CORYLOPHID^E. 



The Lady-bugs, p. 534 Family COCCINELLIDJE. 



The Endomychids. p. 535 Family ENDOMYCHIDJE. 



The Erotylids. p. 536 Family EROTYLID/E. 



The Colydiids. p. 537 Family COLYDIID^E. 



The Rhyssodids. p. 537 Family RHYSSODID^:. 



The Cucujids. p. 537 Family CUCUJIDJE. 



The Cryptophagids. p. 538 Family CRYPTOPHAGID^E. 



The Mycetophagids. p. 538 Family MYCETOPHAGID^E. 



The Dermestids. p. 538... Family DERMESTID^E. 



The Histerids. p. 541 Family HISTERIDJE. 



The Nitidulids. p. 541 Family NlTlDULlDJE. 



The Trogositids. p. 542 Family TROGOSITID^E. 



The Monotomids. p. 542 Family MONOTOMID^E. 



The Lath rid i ids. p. 542 Family LATHRIDIID^. 



The Derodontids. p. 542 Family DERODONTIDJE. 



The Pill-beetles, p. 542 Family BYRRHID^E. 



The Georyssids. p. 543 Family GEORYSSID^E. 



The Parnids. p. 543 Family PARNID.E. 



The Heterocerids. p. 543 Family HETEROCERID/E. 



DDD. THE SERRICORNIA (Ser-ri-cor'ni-a) or Serricorn Beetles. 



Isomera in which the first ventral abdominal segment 



is visible for its entire breadth, and in which the antennae 



are usually serrate. 



