NO. 1102. rBOCEEDINGS OF THE XATWNAL MUSEUM. 117 



yellowisli, tLe areolet distinct, while the cubital cell is closed for two- 

 thirds of its length. The black abdomen is delicately, reticulately 

 scnlptured. 



Male. — Length, l.G mm. Entirely black, the antennte and legs pale 

 yellow. Antennte long, 15-joiuted, the third joint slightly curved; 

 thorax finely, reticulately i)unctate, without grooves, the abdomen 

 small and x)edunculated. 



If the female had remained unkuown, this species would have been 

 jdaced in the genus Keuroterns, the male agreeing more closely in its 

 structural characters with that genus than with Andricus. 



Type.— So. 3001, TT.S.N.M. 



Described from 1 female and 7 male specimens, reared June L'8. 1883, 

 from a gall occurring on an unknown oak in Arizona, received from H. 

 K. Morrison. 



7. ANDRICUS MURTP^ELDT.(E, new species. 



Gall. — An irregular, hard, i)ithy, brown, globular gall; externally 

 tinely granulated and with a few sliort blunt spines; interiorly of a 

 hard, pithy, brown substance ; poly thalamous. Diameter, 8 mm. ; length, 

 10 mm. 



Gallffy. — Male. Length, 2.G mm. Head, thorax, and abdomen black, 

 subopaque, the abdomen along the venter and at apex brownish; an- 

 tenme and legs, including coxa', yellowish brown, the posterior pair 

 slightly obfuscated; ocelli red; eyes brown; teguhp and veins of wings 

 brown, the basal vein and apical portion of the submarginal from it, 

 and the augulated vein at base of marginal cell, blackish. 



Head and thorax tinely, coutluently punctate, scutellum rugose, 

 pleura punctate and slightly striate. Antenna' 15-jointed, rather long, 

 the third joint longest, the following joints slightly oval, and delicately 

 tinted; the antenna? are more yellowish than the legs. Parapsidal 

 grooves slender but sharply defined; two short median grooves ante- 

 riorly and a slight iudication of a median groove posteriorly, the groove 

 on the shoulders distinct. Wings hyaline, i)iibescent, the veins very 

 distinct, the cubital cell and areolet closed. 



Type.— No. 30G2, IJ.S.N.M. 



Described from 3 male specimens with the gall, labeled simply from 

 Miss Murtfeldt, and probably taken at Kirkwood, Missouri. 



8. ANDRICUS DASYDACTYLI, new species. 



0(tU. — This gall, in structure, is very ])eculiar, and consists of an 

 oblong or elongated, woody tube, in shape not unlike a date seed; it is 

 2 centimeters long by from a half to three-quarters of a centimeter in 

 diameter, one end being attached sessilely to the branch and covered 

 with long, brownish-yellow wool. Internally there is a cylindrical hol- 

 low, which, however, does not extend its entire h^ngth, being inter- 

 rupted or stopped up by the small larval cell which is situated near 

 its center. 



