Strepsiptera. 41 



small, nearly always concealed within the mouth, short and rigid; snout 

 strongly curved downwards, especially when long. Weevils. (Otiorhynchus 

 (= Brachyrhlnus) [0. ovatus, Strawberry root-weevil], Phyt6nomus [Clover 

 and alfalfa weevils], Pissddes [P. strbbi, White-pine weevil], Anth6nomus 

 [A. grdndis, Mexican cotton-boll weevil; A. quadrigibbus, Apple curculioL 

 Conotrachelus [C. nenuphar, Plum curculio], Cryptorhynchus [C. Idpathi, 

 Willow and poplar weevil], Balaninus [Nut weevils], Sphenophorus [Corn, 

 bill-bugs], Calandra [C. granaria, Granary weevil]) (Including RHINOMA- 

 C&RIDM, RHINCH'ITID^, ATTELABIDM, BRYSOPIDM, 0770- 

 RHYNCHIDffi (=BRACHYRHINIDM), CALANDRIDM) (PI. 5, fig. 

 106; PI. 6, fig. 125; PI. 7, fig. 153) CURCULIONIDJSE 



113. Prothorax elongate, elytra covering the pygidium, first two ventral segments 



fused; rostrum short and broad. (Cratoparis, Brachytarsus) ANTHRIBK)^ 

 Prothorax not elongate, usually trapezoidal; pygidium exposed; ventral seg- 

 ments free, rostrum very long in the female, sometimes entirely absent in 

 the male. (Eftpsalis, Brenthus, Cylas) (PI. 6, fig. 115) BRENTHIDJE 



114. Lamellae of antennal club not capable of closing together, usually not flat- 



tened, but forming a more or less comb-like mass 115 



Lamellae of antennal club flattened and capable of close apposition 117 



115. Mentum entire, the ligula behind, or at the apex of the mentum 116 



Mentum deeply emarginate, the ligula large, corneous, filling the emargina- 



tion; large, elongate, shining beetles with deeply lined elytra. (Passalus) 



PASSALIIXflS 



116. Ligula and maxillae covered by the mentum; antennae usually elbowed. Stag- 



beetles. (Lucanus, Dorcus, Platycerus, Cerikhus) (PI. 7, fig. 149). 



LUCANID^ 

 Ligula and maxillae not covered; antennae straight. (Sinodendron.) 



SINODENDRID.E 



117. Side pieces of the mesosternum not attaining the coxae; elytra with more or 



less distinct rows of tubercles; rather small or moderate-sized beetles. 



(Trox.) TROGIDjE 



Side pieces of the mesosternum attaining the coxa?; moderate-sized, or large, 

 stout-bodied, usually very convex beetles, with stout front legs, usually 

 formed for digging. (Onthophagus, Canthon [Tumble-bug], Aph6dius r 

 Geotrftpes, Macrodactylus [Rose Chafer], Lachnosterna [June-bug], Pelid- 

 n6ta) (PI. 5, fig. 107; PI. 7, figs. 150, 151) SCARAB^ID^B 



ORDER STREPSIPTERA. 



(RHIPIPTERA.) 



Small species parasitic on insects, the adult males winged and 

 free-living, but the larviform females never leaving the body of 

 their host. Male with the head free, with well-developed eyes; 

 antennae with three to seven joints, some of the joints prolonged 

 into a long lateral process (flabellum) ; prothorax greatly reduced, 



