134 THE CANADIAN ENTOMOLOGIST. 



NEW SPECIES OF NORTH AMERICAN MYRMELIONID.E.— II. 



BY ROLLA P. CURRIE, WASHINGTON, D. C. 



Brachynenuirus niger, new species. 



Female. — Length, 29 mm.; expanse of wings, 56 mm.; greatest width 

 of anterior wing, 7 mm.; length of antenna, 4 mm. Black, marked on 

 head and thorax with luteous ; sparsely hairy, more distinctly so on 

 prothorax and abdomen. 



Face scarcely convex, luteous, a transverse, shining black band 

 above which extends upward so as to cover the inter-antennal area ; this 

 band is notched below, a black line extending from the notch almost to 

 the clypeus ; on either side, between face, clypeus and inner orbit of the 

 eye, a triangular black dot. Circuniocular area mostly luteous, except 

 along vertex, where it is piceous. Clypeus luteous, on each side 

 anteriorly an impressed dot. Labrum transverse, rounded laterally, 

 emarginate in front, luteous, darker on emargination where it is sparsely 

 clothed with black hairs. Mandibles piceous, black at tips. 



Maxillary palpi of moderate length, piceous, with luteous articula- 

 tions ; first two joints short, about as broad as long, subequal, pale ; 

 third joint a little longer than first and second together, somewhat curved; 

 fourth joint a little shorter than third ; apical joint as long as third, 

 subcylindrical (a little enlarged before apex), black, its tip truncate, 

 luteous. 



Labial palpi much longer than maxillary, piceous, with pale luteous 

 articulations ; first joint short, about as broad as long ; second joint 

 nearly three times as long as first, curved in basal half; apical half 

 darker, widened and flattened, concave on inner side ; apical joint 

 greatly enlarged, fusiform, clothed with black hairs, shining black on 

 inflated portion, the sharply-pointed tip luteous ; an ocellus-shaped 

 organ* on apical third of inflated portion Externally. 



Maxillary palpigers f piceous, the anterior joint interrupted in the 

 middle with luteous. Labium luteous, piceous at base. Labial palpigers 

 luteous, each with a black semicircle. Mentum luteous, with a transverse 

 black line or series of dots, behind which rises a long black bristle. 

 Gula luteous. 



Antennae clavate, somewhat shorter than head and thorax, black, 



*Thi.s organ is present in all American Myrmelionidre I have seen. 

 + 1 apply this term to the angular, elevated pieces from which the maxillary palpi 

 spring. 



