NO. 2332. VARIO US NEW SPECIES OF HYMENOPTERA—GJRA ULT. 193 



The male differs in having a distinct inverted V-shaped marking 

 on the lower face (as in alhifrons) ; the apex of the V between the 

 antennae and the latter embraces the black clypeus; no other head 

 markings except the upper occipital margin of the eye; the mark 

 on the scutum is very faint, that on parapside absent, as is also the 

 first mark on the abdomen; apex ventral asi>ect of antennae reddish; 

 the first two pairs of tibiae are lemon yellow; the liind femora has 

 (outwardly) the basal margin yellow and the two distal dots inserted 

 longitudmally, while the middle dot on dorsal margin has been enlarged 

 to include nearly the proximal two-thirds of that margin (more visible 

 from without than from within). Scape yellow. Antennae 13- 

 jointed, one ring joint, funicle joints subquadrate, the scape com- 

 pressed (m the female slender and funicle 1 is somewhat longer than 

 wide). 



Propodeum (female) very finely punctate, with a strong median 

 carina with a tendency to branch; branched once strongly a little be- 

 yond middle ; caudal margin of propodeum strongly carinated ; in the 

 male, about the same. Then the male resembles alhifrons (types) but 

 that species has the thorax not punctate but rugulose, while on the 

 thorax only the dot on each side of the pronotum is present, the 

 abdomen unmarked. A " type " of torvina from Texas in United States 

 National Museum has about a dozen of the transverse markings on 

 the abdomen and the entire venter yellow; it thus does not agree with 

 the description and was very probably identified later; its middle 

 tibiae bear the spurs. 



A pair from Whitesboro, New Jersey, associated with Ancylis new 

 species (H. B. Scammell). 



Types. — Cat. No. 20749, U.S.N.M., the pair on tags, and antennae 

 of each sex on a slide. 



ACANTHOCHALCIS NIGRICANS Cameron. 



Genotype. 



What appears to be a small specimen of this species (the ovipositor, 

 too, is broken off close to the base) was reared from the flat-headed 

 apple tree-borer at Phoenix, Arizona, September 21, 1915. (A. W. 

 MorriU.) The ovipositor valves are red, black at apex ( teste speci- 

 mens in the United States National Museum), while the antennae 

 are 12-jointed, the last joint smallest except the pedicel, conical; 

 pedicel hardly larger than the ring joint. Antennae inserted slightly 

 below the ends of the eyes, the scrobes reaching the anterior ocellus, 

 deep. The generic characters are the unclubbed 12-jointed antennae, 

 the long ovipositor and the propodeum which has a short horn at 

 meson near base (unispinosa) from which it is declivous but laterad, 

 is plane and depressed, which from the lateral aspect forms a projec- 

 tion over the pleurum; this projection resembles a stout coxa. 

 181404— 21— Proc.N.M.vol.58 13 



