Hymenoptera from Central America. 271 



a yellow elongated line at the base of the furrow and a sliorter 

 broader one at the apex ; towards the apex are two straiglit 

 shining lines. Scutellum coarsely rugoselj punctured ; there 

 are two yellow marks on its base, and at the sides of these is 

 an oblique yellow mark close to the wings ; at the sides of 

 the scutellum the mesonotum is shining, impunctate, and 

 marked with oblique keels ; at the apex of the scutellum the 

 punctuation runs into reticulations; at the sides of the scu- 

 tellum there are also short oblique keels reaching from the 

 wings to the apex of the scutellum, and with a short yellow 

 mark near the wings. The median segment stoutly trans- 

 versely striolated; at the base in the centre are two small 

 yellow marks, and at the apex laterally are two large yellow 

 marks. Mesopleurre coarsely punctured, the punctures 

 running into reticulations at the apex, densely covered with 

 white hair; the metapleurffi excavated at the base, shining, 

 impunctate, the apical part punctured coarsely, the apex 

 crenulated. Abdomen shining, impunctate; all the segments 

 edged with yellow. The ventral segments without yellow, 

 shining; the first segment at the base crenulated, the apex of 

 the second and third segments projecting into two triangular 

 teeth ; there is a smaller projection on the fourth segment. 

 Legs sparsely covered with pale hair ; the coxfe pale yellow, 

 the hinder pair black at the base ; the trochanters yellow, the 

 front pair marked with black beneath ; the four front femora 

 are almost entirely black ; the hinder pair black, yellow at 

 the base and apex. The radial nervure is curved and is 

 received shortly before the second transverse cubital nervure; 

 the first transverse cubital nervure is sharply elbowed below 

 the middle, the second slightly oblique, the third straight ; 

 the first recurrent nervure is received in the basal fourth of 

 the cellule, the second before the middle ; the second and 

 third cubital cellules at the bottom are about equal. 



Trigonalys fasciatipennis^ sp. n. 



l^igra, capite et thorace albo-maculatis, femoribus posterioribus 



brunneis ; alis hvalinis, anticis fumatis. 

 Long., § fere 10, d" 6 millim. 



IJah. Mexico, Atoyac in Vera Cruz [ ? ], Yenta de Zopi- 

 lote in Guerrero [cJ] {11. H. Smith). 



Antennae slender, reaching to the middle of the abdomen, 

 brownish beneath in the middle; the apex of the scape 

 yellow. Head closely punctured, covered with a short 

 white pubescence ; the orbits of the eyes to near the to]), 



