NORTH AMERICAN HYMENOPTERA. 193 



Tribe SPHEGIGASTRIDES. 



■MCIIYC KEPIS Forstei. 



46. Pacliycrepis lachiii u. sii.— 9 . Length .09 inch. A brilliant golden 

 green, somewhat transversely sculptured species with violet reflections. The 

 posterior coxte are blue, the legs pale yellow, excepting a greenish or brown 

 blotch on middle of posterior thighs. The color, differently colored legs, and 

 its larger size will readily distinguish it from Pachycrepis mesograptse Ashm. 



Described from three specimens reared from pine aphis Lachnux 

 amtrall Ashm. 



47. Pachycrepis inesograptsi^ Aslnn. 



This species was reared last stimmer from syrphid j)upae Meso- 

 (j/rapta pol'da Say. 



P.4CIIY.\ErRO]^ Walker. 



48. Pachyneiiron syrphi Ashm. 



This species is my Spalanglaf syrphl reared from a svrphid pupa 

 iSijrpkm phikidelphleus, and described some yeai's ago in the " Cana- 

 dian Entomologist." I gave the same name to another species last 

 summer, but which is evidently distinct; that mav be known as 

 syrphicola. 



Subfamily PERiLAMPiN.ii;. 



L,AMPROSTYL,IJS Forster. 



49. Liamprostylusf?) floridanus n. sp.— 'J, . Length .11 inch. Black, 

 opaciue, coarsely and deeply punctate, the face covered with white pubescence. 

 The anteiuiiE in structure is similar to the males in Eurytoma with whorls of 

 long, white hairs. Eyes brown, scutellum large, elevated posteriorly. Wings 

 hyaline, short, at apex full and round ; the marginal vein is short, stout, the 

 stigmal vein short. The abdomen is ovate, all the dorsal segments plainly visible, 

 and nearly equal in length, the two ventral segments overla])i)ing the two dor.sal 

 segments at sides, and is attached to the stout peduncle, apparently from the side, 

 the butt end ajjpeariiig above, the pointed end beneath, or like an egg standing 

 on its point. All the femora, excepting at their tips, and the middleand posterior 

 tibia^, excepting tips, black ; rest white. 



Described from one specimen captured at large. 



This interesting species shows very close affinity witli the Earii- 

 fnmiiia', and will help to bridge the barrier separating these closelv 

 related subfamilies. 



TRANS. AMEK. KNT. SOC. XIV. (2.")) NOVEMBER, 1887. 



