AMERICAN HYMENOPTERA. 263 



ovoid, irregularly rugose in the middle ; below its middle is a deep fovea, rounded 

 above, tiausverse below. Metapleuife finely, closely striated. 



Hah. — Mexico. 



Epyris mexicanus sp. nov. 



Black ; tlie anteniiEe, except the apical joints which are infuscated, mandibles 

 except the teeth, which are black, and the legs rufo-testaceous; the coxae, the 

 fore femora broadly in the centre behind and the greater part of the 4 posterior 

 black ; the sides and apex of the 1st abdominal segment and the apices of the 

 others testaceous. Wings hyaline, the nervures testaceous. %, . Length 5 mm. 



Head strongly but not closely punctured. Olypeus broadly rounded, bluntly 

 keeled in the middle. Flagellum of antenuffi densely covered with white pubes- 

 cence. Pro- and mesonotum sparsely, distinctly punctured, the nietanotum 

 shining, impunctate, except on the apical slope, which is aciculated. The centre 

 of the propleurfe closely, strongly striated. There is an irregular striated depres- 

 sion on the base of the mesopleurse, beyond this is a roundly curved, horn-shaped 

 depression, dilated at the apex. Metapleurpe aciculated. Sternum thickly cov- 

 ered with long white hair. Tegulse testaceous. 



Hab. — Mexico. 



ACULEATA. 



Rliopaliiiii !«|>iiiigeru!ii sp. nov. 



Black ; antenual scape, 4 front legs, a large mark, broadly rounded below the 

 tubercles, hind trochanters and a line on the posterior tibije behind, mandibles, 

 except at the apex and palpi, bright lemon-yellow ; flagellum of antennae fuscous 

 below ; wings hyaline, the nervures and stigma black. % . Length nearly 4 mm. 



Lower part of front, face and clypeus thickly covered with silvery pubescence. 

 Eyes large, coarsely facetted, distinctly converging below. Ocelli in a triangle, 

 the hinder separated from each other by about the same distance they are from 

 the eyes. Temples above as long as the antennal scape. Metanotal area with a 

 large, deep V-shaped depression which reaches to its middle; there is a deeper, 

 larger depression on the apical slope ; there are some short keels on the base. 

 Pleurai smooth, thickly covered with white pubescence. Petiole in length twice 

 the width at the apex, becoming gradually wider towards it; it is clearly longer 

 than the 2nd segment. Tegulaj piceous. Recurrent nervure received almost in 

 the middle of the cellule; apical abscissa of radius straight, oblique. Fore 

 femora narrowed at the base and to a less extent at the apex ; on the under side, 

 at the base of the apical third, is a sharp tooth or spine ; the tibiae narrowed at 

 the base, from where it becomes gradually thicker to the apex ; the basal joint 

 of the tarsi dilated, rounded above, straight below. Middle legs normal. The 

 hind tibiae become gradually thicker, but not very much, towards the apex. 

 Outer spur of hind tibiae broad, knife-shaped; metatarsus stout, as long as the 

 other joints united. 



Hab. — Mexico. 



Rhopaliiin uiigiilicolle sp. nov. 

 Black; antennal scape below, mandibles, except at the apex, palpi, tubercles, 

 the greater part of the fore tibite and tarsi and the middle tarsi, the middle tibiae 



TEANS. AM. KNT. SOC. XXX. SEPTEMBER. 1904. 



