THE DARKLING BEETLES. 



1243 



ee Middle cox. very prominent; thorax narrower at b- n ^ 

 its sides rounded and without a sharp edge; next tolast tersa 

 ioint broad, slightly bilobed; body covering rather fl.ms S in to 

 joint oroau, b Faml iv LX. CEdemerid.e, p. 1304. 



M, Headstrong* and suddenly constricted behind the eye. 



g . Thorax with a sharp edge at sides, its base as wide as elytra. 



-^^TcStS, Plates; head with vertex lohed or ridged be- 

 " 1 Ttn Un extension it reposes on the front edge of the 

 2-a*; abdomen usually prolonged in a style or poin d 



Family LXI. Mora.Kt.um*:, P, 130S. 

 fi . Hind'coL without plates; characters otherwise as in Melan- 

 drvidfe; length less than 5.5 mm. 



Tribe (LVIII). Scraptum, p. 1299. 

 H . Antenna* flabellate (male), subserrate (female): characters 



otherwise as in RhipipHoridse. 



Genus (LXY). Pelecotoma, p 1365. 



w Sides of thorax more or less rounded and without a sharp edge. 

 , . Thorax at base narrower ^- elytra ^ 

 7;. Hind cox* not prominent, tarsal cla^s >im L , 



form and simple; head with an abrupt narrow neck, length 

 le^s than 12 mm., usually less than 5 mm. 



Family LXII. AM« P- 1326. 



i 7 TT4n/1 OAVOi Iqvcrp prominent. 



'\ Tarsal claws simple; head horizontal; antenn, nana* j 

 branched in male, serrate in female: next to last taisal 



joints very broad. .„ 

 Family LXIII. Pyrochroidje. p. Io40. 



II Tarsal claws cleft or toothed; front vertical; elytra and 



' .ides of abdomen without coadaptation ; length 6 oi 



n-re nuu Family LXIV. Meloid.e. p. 1350. 



* T '-' . " ' nc Alv tvn • form as in Mordellida?. the 



a Thorax at base as wide as elytia. ioiui 



abdomen not ending in a spinous process; elytra 



than abdomen and narrowed behind: antenna, pectinate in the 



males, frequently serrate in the females. 



Family LXV. Rhipiphorid.e. p. Mb*. 



Family LV. TENEBRIONIDJE. 

 The Darkling Beetles. 

 . A large family whose species vary greatly in size and form of 

 body. In color they are mostly black or dark brow whence the 

 name of the typical genus, Tenebrio, which is derived from a Latin 

 name e I . 8 . , form8 have a peculiar loose- 



word meaning darkness. im i„„„_j 1^ The 



jointed appearance and long, rather clumsy and awl™ ard legs. 



