TIPHIA. 241 



its apex, that on the mesonotum closer and uniform, this being also the case with the 

 scutellum and postscutellum ; the median segment more coarsely shagreened; the 

 propleurse without striations ; the metapleurse at the base more deeply excavated, the 

 apex much less strongly striated ; the basal segments of the abdomen slightly, the 

 other segments more strongly punctured, the punctuation becoming stronger and 

 coarser towards the apex ; the hypopygium reddish at the base and apex, the base 

 impunctate, the remaining portion strongly punctured; and the ventral segments 

 much more strongly punctured. As in the female, the central furrow on the median 

 segment is thickened. The alar stigma is black. Length 13-14 millim. 



2. Tiphia guatemalensis. 



Nigra, capite et thorace dense albo-hirtis ; alis fusco-hyalinis. 

 Long. 16 millim. 



Hab. Guatemala, Zapote (Champion). 



Head very strongly punctured, densely covered with long fuscous hair ; the clypeus 

 punctured at the base, the middle not projecting. The scape of the antennae punctured, 

 covered with long pale fulvous hair; the nagellum densely covered with a fuscous 

 pile, the basal joints projecting beneath. The pronotum strongly punctured at the 

 base, thickly covered with pale fulvous hair, the sides shagreened, finely striated 

 beneath ; the mesonotum strongly punctured, except at the sides, covered with long 

 fulvous hair ; the scutellum and postscutellum with scattered punctures ; the median 

 segment shagreened ; the mesopleurse with not very strong punctures, the metapleurse 

 strongly striolate. The abdomen not very shining; the basal segments sparsely punc- 

 tured, the apical ones closely punctured and fringed with long pale hairs ; the pygidium 

 strongly punctured, densely covered with long pale hair ; the ventral segments punctured 

 and haired like the dorsal segments. The legs covered with long white hair ; the 

 tarsal spines reddish, the calcaria piceous. The first recurrent nervure is received 

 shortly beyond the middle, the second close to the apical fourth of the cellule. 



This species is closely related to T. azteca, but it is larger ; the wings are much 

 lighter in tint ; the first recurrent nervure is received further from the second trans- 

 verse cubital ; the middle of the clypeus does not project from the sides, but is continuous 

 with them ; and the mesonotum is strongly punctured. 



3. Tiphia azteca. 



Nigra, alis f uscis. § . 

 Long. 15 millim. 



Eab. Mexico, Orizaba (H. H. Smith & F. D. G.). 



Head strongly punctured all over, except in front of the ocelli, where there is an 

 impunctate space ; sparsely covered with moderately long pale hair ; the clypeus with 

 biol. centr.-amee., Hymenopt., Vol. II., October 1893. 2 n 



