204 THE CANADIAN ENTOMOLOGIST. 



length of the wings. I have examined many male coccids, but never 

 before noticed this spurious vein, and consequently think it of great 

 importance. Halteres linear, terminating in a hook with two teeth ; one 

 of the halteres is attached to a fold or thickening in the front wing, and 

 as has before been observed, evidently greatly assists the insect in its 

 flights ; the other one was loose, and thus enabled me to make out the 

 two small teeth. 



STRAY NOTES ON MYRMELEONIDiE, Part 5. 



BY DR. H. A. HAGEN, CAMBRIDGE, MASS. 



( Continued from page igi.) 



Myr?nelcon mobilis Hag. 



M. mobilis Hag. Stett. Z., vol. xxi., 368 ; vol. xxvi., 444. (No 

 description.) 



M. immaculatiis Burm. Vol. ii., 994, 5 (not De Geer)— Hagen Syn. 

 N. Am. 231, 14, partim. 



The face above the epistom blackish brown, shining ; mouth and a 

 ring around the eyes yellowish ; palpi yellowish ; maxillary thin, apical 

 joint cylindrical, notched on tip ; labial of same length, apical joint 

 fusiform, the conical tip notched. 



Antennae as long as head and thorax, thicker at tip, which is clavate, 

 fuscous, annulated with yellow, except on club ; basal joint yellow above, 

 second black ; antennae below largely yellow. 



Head dull luteous, with some flat pitchy-fuscous spots ; vertex 

 transverse-ovoid, elevate, anteriorly finely rugulose ; on the middle two 

 pairs of twin bands, one behind the other ; the anterior pair with hind 

 end of its band bent outward ; a round spot on each side of the bands j 

 the posterior pair straight ; on each side two triangular spots, near the 

 eye ; behind the vertex on each side a transversal band, near the eyes. 



Prothorax broader than long, sides about straight, front margin semi- 

 circular, luteous with some black hairs besides ; anterior part before the 

 transverse sulcus on each side with a black crescent and indistinct median 

 band ; hind part on each side with an indistinct black mark ; thorax dull 

 luteous, with some indistinct brown shadows besides and below. 



