208 



TflE CA.NADIAM ENTOMOLOGIST. 



Fig. 12. — Front ot Pseiidacteon. 



added a third genus, differing from the first by the simple third vein, from 

 the second by the absence of the fringe of bristles along the outer side of 

 the hind tibiae, and from both by the greater number of frontal bristles, 

 also in that the median pair in the lowest row is proclinate instead of 

 reclinate. Some idea of the appearance and structure of this interesting 

 form may be gleaned from the accompanying description and figures. 



PsEUDACTEON, new genus. 

 Front slightly broader than long, bearing four transverse rows of four 



setfe each, the latter reclinate except the median 

 pair in the lowest row, which are proclinate (fig. 

 I 2). Third antennal joint oval, about one-third 

 longer than broad, the arista apical. Palpi 

 well developed, clavale, bearing about four 

 \'/ ^ ~ ^ 'V 1 bristles at the apex, proboscis robust. Female 



V 1^^\ -^ with a horny ovipositor about half as long as 



the abdomen. Legs devoid of bristles except 

 at the tips of the hind and middle tibiiie. 

 Venation noimal, the third vein simple. Type, the following species : 



Pseudadeon Craw/ordii, new species.— (Fig. 13.) Black, the pleura 

 dark brown, the mouth-parts, legs and 

 halteres light yellow. Wings hyaline, 

 veins brown, the four light ones notice- 

 ably paler toward their bases. Length 

 about I nmi. 



Dallas, Texas. Three males and 

 seven females collected, June 17, Ju'y 

 19 and October 22, 1906, by Messrs. 

 J. C. Crawford and W. D. Tieicc. 

 One of the females was observed k^ 

 apparently deposit an egg in the head 

 of an ant, Solenopsis geviinata, and as 

 the Phorids were found only in the company of ants of this species, it is 

 altogether probable that they infest the heads of the latter after the manner 

 of Apocephahis Fergatufei, which is known to live within the heads of 

 another kind of ant. 



Fiii. 



-l'seiiJactci.>Ji L r.'iuforJil. 



■Jype No. 10294, U. .S. National Museum. 



