120 



FAMILY EVANIID.l^:. 



genera is always about tlie same, and is illustrated by Odontaulacus 

 editus (Fig. 71). The hind wings are more generalized than in the 

 preceding. In Semenovius they have two distinct cells. In the 

 front wings the base of M3 ^ 4 and r-m are approximate or joined. 

 In the different genera we have specialization manifesting itself in 

 an increase in the number of teeth on the tarsal claws, varying from 

 two to four (Figs. 40-42). 



The mouth-parts are shown in Figs. 24 and 25. 



The arrangement of genera in the following table I believe to be 

 as nearly natural as a linear grouping may be. 



TABLE TO THE GENERA OF AULACINyE. 



1. Posterior wings without venatiou, excejjt E + M (Fig. 69) ; claws simple, or 



with one or two teeth (Aulacini) (2). 



Posterior wings with one or two closfid cells (Fig. 71) ; claws with two or more 

 teeth (Figs. 40-42) ( Prist aul.\cini) (5). 



2. Anterior wings without E5 or with only a stump thereof ; base of M3^4 not 



far removed from r-m (3). 



Anterior wings with R5 present and complete; base of M-jJ^i far removed 



from r-m (Fig. 67) Aulaciiiiis West wood. 



(Type AiUacus mwrens Westw.) 



3. Claws simple (Fig. 391 ; posterior coxse of the female greatly prolonged within 



to far beyond the insertion of the trochanters; forehead with a crest 

 above the antennse; two distinct pits on each side below the antennEe. 



Pailiniegischia Provancher. 



(Type F. burqnei Provancher.) 



Claws with one or two teeth beneath (4). 



4. Claws with one tooth beneath; posterior coxie of female much prolonged 



within . Aiilaciis Jurine. 



(Type A. striatus Jurine.) 

 Claws with two teeth beneath; posterior coxse of female simple; no frontal 

 crest ; pits below the antennfe smaller than in Pammegischia ; anterior 

 margin of the prothorax with a distinct tooth on each lateral angle. 



Int«'r»ulacus n. gen. 

 (Type /. kieff'eri n. sj).) 



5. Anterior wings with the base of the longitudinal sector of the free part of M 



wanting; the base of M^4 4 far removed from r-m; claws with four 



teeth beneath TropaiilaciiN n. gen. 



(Type T. torridus n. sp.) 

 Anterior wings with M complete; base of M;, : 4 not far removed from r-m -.(6;. 



6. Claws with two teeth ( Fig. 40) (7). 



Claws with three or more teeth (Figs. 41, 42) (Pristaulacus Kicfler) (S). 



7. Posterior wings with two closed cells (Fig. 71)- . . ■OdontiiiiliK'iiM Kiefl'cr. 



(Tyi>e AiiliicHs rufHarsis ("resson). 



Posteror wings with only one closed cell iSeinciiOViiiSi new name 



(= f^emenoicia Kieffer, preoc.) (=^ Anaulacus Semenow, preoc). 



(Type Aulacus xibiricola Semenow.)" 



