ANISOMERA. 239 



lower ones. The same structure occurs in Eriocera longicomis. 

 The other Erioceree, as well as Penthoptera, have the ovipositor 

 of the usual structure. 



Eriocera and some forms related to it are abundantly repre- 

 sented in the warmer regions of Asia, Africa, and America ; the 

 genera Pterocosmus Walk., Physecrania Bigot, Oligomera 

 Doleschall, and Evanioptera Guerin, are either synonymous with 

 Eriocera or related to it. The other genera of this section have 

 not been discovered yet outside of the temperate regions of 

 Europe and North America. 



The genus Bertea Rondani (Atti d. Sc. Natur. di Milano, II, 

 p. 56, with figures), for which this author establishes a separate 

 family, Berteidse (comp. above, p. 12), is based upon a single 

 specimen found under beech leaves. Its wings are abortive, very 

 short, without any apparent venation ; it has a tubercle on the 

 front with two or three indistinct ocelli (the author himself, how- 

 ever, was not certain about the correctness of this statement) ; 

 the antennaB are twelve-jointed, the third joint being cylindrical 

 and about twice the length of the first and second joints taken 

 together, while the other joints of the flagellum are rounded. If 

 I mention this genus here, it is because the tubercle on the front 

 and the length of the third antennal joint may indicate a relation- 

 ship of Bertea to the Anisomerina ; however, the above-quoted 

 description does not furnish the necessary data for any positive 

 conclusion. 



Gen. XXXI. ANISOMERA. 



Two submarginal cells ; three posterior cells ; discal cell open ; subcostal 

 cross-vein near the tip of the auxiliary vein (Tab. II, fig. 12). Tibise with 

 spurs at the tip ; ernpodia distinct. Eyes glabrous, front with a large 

 gibbosity behind the antennae ; the latter 6-jointed, sometimes with a rudi- 

 mental seventh joint at the tip, in the male ; in the female they have th$ 

 same number of joints, but the sixth has often the appearance of being 

 subdivided in three, four, or five joints. Ovipositor of the female short, 

 obtuse ; upper valves shorter than the lower ones. 



Head large and broad ; rostrum and palpi short ; the latter 

 (according to Walker and Schiner) have joints of an equal size ; 

 front very broad, frontal gibbosity bituberculate ; eyes very 

 remote on the upper as well as on the under side of the head. 

 Antennae six-jointed in the male, the third joint being the longest; 



