38 



PROCEEDINGS OF THE NATIONAL. MUSEUM. 



VOL. 64, 



meso- and metanota are only a little emarginate posteriorly in 

 fumosus; narrowly emarginate in ater. 



Legs yellow with tinge of brown. 



Wings gray, veins yellow-brown, costal veins darker, wing margins 

 ciliate, tissue of wing punctate; median vein slightly nearer to 

 cubitus than to subcosta, reaches apex of wing (doubly or singly 

 branched or not branched); cubitus does not reach apex of wing; 

 with 10-12 branches or sub-branches to lower margin, not parallel to 

 but converges to lower margin of wing posteriorly (pi. 5, figs. 31-32). 



Wing scale shorter than pronotum. 



Abdomen with dorsum slightly lighter colored than pronotum, 

 with dense short and long light yellow hairs. 



Measurements. 



A . honduren- 

 sis, new 

 species. 



A . fumosus, 

 Hagen type. 



A. fumosus, 

 Hagen.i 



A . ater, 

 Hagen type. 



A . ater. 



Length of entire winged adult . 



Length of entire dealated adult . . 



Length of head (tip of mandibles 

 to posterior margin). 



Length of pronotum 



Length of hind tibia 



Length of anterior wings 



Length of left mandible 



Width of head (between eyes) . .. 



Diameter of eye 



Width of pronotum 



Width of anterior wing 



11-12 mm., 

 males; 13.5 

 mm., fe- 

 male.3 



6-6.5 mm., 

 males; 7 

 mm., fe- 

 male. 



1.55 mm 



0.6 mm 



1.25 mm 



10.75 mm 



0.7 mm 



1.25 mm 



0.27-0.3 mm. 



1.1 TTlTn 



2.55 mm 



14 mm., fe- 

 male. 



6 mm., fe- 

 male. 



1.35 mm. (to 



tip of la- 



brum). 



0.6 mm 



1.2 mm 



11 mm 



0.7 mm 



1.1 mm 



0.35 mm 



0.9-1- mm. 



(turned 



down). 

 3mm 



12.5 mm., fe- 

 male. 



6 mm., fe- 

 male. 



1.23-1.30 mm. 



0.57 mm 



1.23 mm 



11.37 mm.... 



0.6 mm 



1.1 mm 



0.25-0.27 mm 

 0.93+ mm. 



(turned 



down). 

 2.8 mm 



12 mm., fe- 

 male. 



5 mm., fe- 

 male. 



1.35 mm. (to 

 tip of la- 

 brum). 



0.55 mm 



1.15 mm 



10.5 mm 



0.55 mm 



1.2 mm 



0.3 mm 



1 mm , 



2.9 mm , 



12 mm., fe- 

 male. 



6.5 mm., fe- 

 male. 



1.27 mm. 



0.57 mm 

 1.03 m. 

 10.05 mm. 

 0.55 mm. 

 1.07 mm. 

 0.25 mm. 

 im. 



2.50 mm. 



1 Specimens from HarUngon, Tex. 



2 Specimens from Coxipo, Cuyabil, No. 63, determined by F. Silvestri, which were kindly presented by 

 him to the United States National Museum. The head is brown colored — lighter than in the type; the 

 post-clypeus is more bulging than in the type. 



3 There is considerable difference in the size of the sexes, the female often being much larger. 



Mandibles longer than in ater Hagen and fumosus, post-clypeus 

 more bulging and broader in proportion to its length than in ater; 

 a larger and darker species than is gracilis Snyder, eyes more pro- 

 jecting, ocelli separated from eyes by a greater distance; darker and 

 broader than fumosus; there are also differences in wing venation 

 (pi. 5, figs. 29-32). 



Type locality. — La Ceiba, Honduras. 



Described from a series of winged adults collected at the type 

 locality by F. J. Dyer, the American consul. May 19, 1916, Nos. 6655 

 and 6664. 



Type, winged female adult. — Cat. No. 25692, U.S.N.M. 



