126 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.63. 



Descriptions based on the type material, sLx female specimens, 

 located in the collection of the National Museum at Washington. 



It was not surprising that this remarkable species should have been 

 wrongly placed. At first sight it seems to differ greatly from other 

 described species, as indeed it does. However, when the student 

 compares liopkinsi with species such as Leptacis auripes (Ashmead) 

 he will see that the differences concern themselves with proportions 

 only. The general principle of elongation is present the same as it 

 is in Platygaster. 



The habits, so far as known, are discussed in the original description. 

 Professor Comstock found many specimens on a newly cut oak stump 

 near Falls Creek, New York. They were inserting the slender part 

 of the abdomen into the intercellular spaces of the wood near the bark. 



13. LEPTACIS PUNCTATA Ashmead, 



Leptacis punctatus Ashmead, Bull. 45, U. S. Nat. Mus., 1893, p. 272. 



Female. — Length 1 mm. Head a trifle wider than the thorax, not 

 quite twice as wide as long, finely granulose (as is also the thorax 

 except on the pleural sclerites) ; frons flattened or subconvex, with 

 or without a delicate median furrow, with a low ridge between the 

 antennae; vertex highly elevated behind, separated from the occiput 

 by a high sharp ridge; occiput finely reticulate, not so strongly sculp- 

 tured as the frons; thorax convex above, higher than wide, nearly 

 three-fifths as wide as long; notauli complete, converging to a sharp 

 point posteriorly; mesonotum constructed as in aslimeadi Fonts; scutel- 

 lum evenly rounded above, wider than long; spine as a long as, or 

 slightly shorter than, the rest of the scutellum, nearly straight or 

 decidedly recurved, acute at apex ; abdomen shorter than the thorax 

 to as long as the head and thorax united, narrower than the thorax, 

 elliptical, two-thirds as wide as long to half as wide as long, some- 

 times flattened above and below posterior to the second segment ; sec- 

 ond tergite as wide as long, polished ; following tergites transverse, of 

 variable length, depending on whether they are retracted or extended, 

 sometimes when united two-thirds as long as the second, polished; 

 sixth tergite scarcely wider than long to much wider than long; 

 pointed apically, nearly as long as the two preceding united ; wings 

 tinged with brown or hyaline, the anterior ones without marginal 

 oilia. Black; scape, funicle, anterior and middle legs (except the 

 coxae of both and sometimes part of the tibiae and femora of the 

 latter), bases of tibiae and the tarsi completely, yellowish brown or 

 golden colored. 



Ttjpe locality. — Jacksonville, Florida. 



Paratype locality. — Arlington, Virginia. 



Type.— Cut. No. 25459, U.S.N.M. 



