NO. 1930. DESCRIPTIONS OF NEW SAW FLIES— ROHWER. 247 



ACORDUIECERA SCUTELLATA, new species. 



Related to mixta MacGillivray but may be separated from that 

 species by having the first joint of the flaii;elJum distinctly longer 

 than the second. 



Female. — Length 3.5 mm. Labrum obtusely angulate anteriorly; 

 middle foveas wanting; frontal furrow present ; ocellar basin present, 

 but shallow; antennal furrows present to ocelli, where they broaden 

 into a shallow depression; postocellar hne much longer than the 

 ocellocular line; first joint of flagellum distinctly longer than the 

 second. Black; most of antennae, clypeus, labrum, mandibles 

 (apices piceous), legs, tegulae, scutellum, venter and a dorsal spot on 

 the abdomen yello^vish-white. Face without dense pubescence. 

 Wings hyaline, venation pale brown, mth the stigma paler. 



Male. — What may be the male has the hypopygidium truncate 

 apically, and the frontal furrow deeper below. In one of the males 

 the supraclypeal area is pale. 



West Point, Nebraska. One female collected in June. Onaga, 

 Kansas. One male collected by Crevecoeur. Sheffield, Alabama. 

 One male collected August 15, 1909, by H. S. Barber. 



Type.— Cat. No. 14417, U.S.N.M. 



II. Scutellum black. 

 1. Ocellar basin present. (Frontal furrow present.) 

 A. Middle fovea present. 

 a. First joint of the flagellum distinctly longer than second 



ACORDULECERA FOVEATA, new species. 



Similar to maura MacGillivray, but that species has the middle 

 fovea wanting. 



Female. — Length 3.5 mm. Labinim angulate apically; antennal 

 furrows complete to ocelli, where they form shallow depressions; 

 postocellar line subequal with the ocellocular line. Black; apex of 

 clypeus, labiimi, mandibles (apices piceous), palpi, pronotum, tegulae, 

 I legs (except hind tarsi) , venter and a spot on the tergum yello\vish- 

 white. Wings hyaline; venation dark brown. Face fairly well 

 ( clothed with white hair. 



Male. — Length 3 mm. Similar to the female, but the pronotum, 

 Itegulse, and abdomen are black, and the postocellar line is slightly 

 longer. Hypopygidium truncate apically. 



Great Falls, Virginia. One female and four males collected May 

 1112, 1911, by S. A. Roliwer. Dixie Landing, Virginia. One female 

 collected June 30 by C. L. Marlatt. 



Type.—Q.&,t. No. 14418, U.S.N.M. 



