HO. 2213. DESCRIPTIONS OF CIIALCID-FLIES—GIRAULT. 449 



low except across base and apex rather narrowly (apex more broadly), 

 the lateral margins very narrowly and a broad median stripe, which is 

 conical from apex and does not quite reach base and whose margins 

 are wavy; otherwise the same but there is a delicate median carina 

 on the propodeum (absent in the other). Mandibles 6-dentate. 



Two females reared from Ancylis, new species, Whitesboro, New 

 Jersey, July 20, 1916 (H. B. Scammell). 



Types. — Cat. No. 20746, U.S.N.M., the females on tags, a head 

 and forewing on a slide. 



ASTICHUS BIMACULATIPENNIS GIrault. 



Belongs to Sympiesis and is very close to himaculatus Crawford. It 

 differs in having the scape, cephalic tibiae, and distal halves of the 

 other tibiae dark reddish instead of white, and the distal spot on the 

 forewing (the substigmal) is blacker and twice larger; moreover, 

 there is but one lateral carina on the propodeum. The antenna in 

 himacnlatipennis as in the other species. Mandibles 6-dentate. Type 

 examined (by courtesy of Dr. S. A. Forbes). 



TRYDYMUS AUREIPES, new species. 



Female. — Length, 1.80 mm. 



Resembles poloni, but the abdomen is not longer than the thorax, 

 the legs are entirely golden yellow; the clypeus is similarly produced, 

 but also has a slight, shallow median concavity; the antennae are 

 all yellow except the pedicel above (except at apex) and the dorsal 

 aspect of the first two or three funicle joints (darkened) ; the cheeks 

 are a half shorter (not a fifth the length of the eyes), the antennae 

 are a little above the ventral ends of the eyes, the meson of the 

 propodeum is longitudinally rugulose, the cephalic foveae therefore 

 absent or obliterated, the spiracle oblong and cephalad. 



Described from two females, Jacksonville, Florida (Ashmead). 



Types. — Cat. No. 20421, U.S.N.M., the specimens on two tags 

 with the types of the next species, a forewing on a slide with the 

 same of the next species, and a head and the caudal legs of the next 

 species. 



TRYDYMUS BIGUTTATIPENNIS, new species. 



Female. — In habitus very similar to the preceding, but the cheeks 

 are of normal length (half or more of the length of the eyes, the an- 

 tennae a little below the middle of the face), the postmarginal vein 

 is only slightly longer than the stigmal, in the forewing there is 

 distinct fuscous stain surrounding the whole stigmal vein; an obscure 

 stain (larger) at disto-caudal margin, and a second distinct one 

 (longer than wide) from the base of the marginal vein (the latter over 

 77403— Proc. N. M. vol. 53—17 20 



