NO. 1977. MONOGRAPH OF THE SIOWIPHORIN^—OIRAULT. 201 



Marginal vein with six strong bristles, stigmal with one, submarginal with one. Mid- 

 dle femora with a strong spine near inner side of tip, tibias with three strong external 

 spines, two near base and one near tip. Color (from balsam-mounted specimens only): 

 Head, pronotum, metanotum and abdomen, dark brown, nearly black, eyes dark red; 

 mesonotum bright lemon-yellow; all legs and antennse fuscous; mouth parts light- 

 brown, mandibles tipped with black; wing veins fuscous; fore-wings with an in- 

 definite fuscous patch occupying entire disk except at base and apical fourth. 



Male. — Resembles female, except that it is rather larger and has the entire meso- 

 scutum brown, leaving the yellow band to inclose mesoscutellum and metascutum. 



Described from two females, three male specimens reared by D. W. Coquillett, from 

 Aspidiotus aurantii var. citrinus Coquillett, from San Gabriel, Cal., May 30, June 1 

 and 3, 1887. 



2. SIGNIPHORA NIGRA Ashmead. 

 Signiphora nigra Ashmead, 1900, pp. 409, 410. 

 Ashmead described this species as follows: 



J^emaZe.— Length, about 0.55 mm. Polished black, impunctate, but with a decided 

 seneous tinge in certain lights. Flagellum brown-black. Legs black, the anterior 

 and middle tibse brownish, their tips and all tarsi white. Wings with the basal half 

 or more fuliginous, the apical half or less hyaline. 



Type.— C&t. No. 4767, U.S.N.M. (Ashmead collection.) 



Habitat. — Districc of Columbia: Washington. 



It has never been mentioned in the literature since. I have the 

 following notes concerning it, taken from the type and other speci- 

 mens: Original description correct; the body is finely polygonally 

 reticulated and opaque, not metalHc; structurally it differs from 

 flavopalliata as follows — The discal bristle of the fore wing is absent; 

 the marginal cilia of the fore wing are very much shorter, moderately 

 short, very much shorter than the wing's greatest width (the length 

 about a fourth or less of the wing's greatest width) and slightly 

 shorter than the longest marginal ciUa of the posterior wings; the 

 fuscous area of the fore wing extends less farther distad (proximal 

 third of the wing clouded), only to the distal third of the marginal 

 vein but, however, the apical third of the wing may be slightly em- 

 browned; the bristles on the venation are more numerous, on the 

 submarginal vein at least two, but on the marginal but six (not 

 counting several very minute ones) and on the stigmal but one which 

 is not apical; the venation differs — thus the stigmal vein makes but 

 little angle with the marginal ; its sides are parallel ; it is narrow and 

 straight or else conic, its inner (caudal) margin not forming a distinct 

 concave curve with the imier margin of the marginal vein or but a 

 very slight curve of that sort; the marginal vein is slightly longer 

 and more slender, slightly longer than the submarginal and its caudal 

 margin is less emarginated; the fuscous area of the fore wing is 

 broken by a more or less irregular subquadrate to elongate clear 

 area near the caudal margin under the base of the marginal vein. 

 The distal tarsal joints are dusky; the cephalic tibial spur is long, 

 slender and curved, at tip dividing into two slender tmes. The 



