244 HYMENOPTEEA. 



punctured as the head, except the apex, which is shining and impunctate ; the meso- 

 notum with large widely separated punctures ; the scutellum smooth, the apex and 

 sides with large punctures ; the postscutellum strongly punctured. The median seg- 

 ment shagreened, the sides of the apical part punctured ; the lateral keels slightly 

 curved, converging a little towards the apex ; the middle keel straight, thickened at the 

 base ; the lower part of the propleurse and the apical part of the metapleurse striolate. 

 The dorsum of the abdomen slightly punctured, the punctuation becoming closer and 

 stronger as the apex is reached ; the pygidium with the basal three-fourths coarsely, 

 the apex very finely and closely, punctured, the sides irregularly striolate ; the second 

 and following segments fringed with long grey hair ; the ventral surface punctured, 

 the segments thickly fringed with long grey hairs. The tibiae and tarsi thickly covered 

 with silvery hair; the tibial spines testaceous at the apex; the tarsal spines ferru- 

 ginous ; on the basal joint of the tarsi are two stout ferruginous spines. Wings fusco- 

 hyaline, the nervures and stigma blackish ; the second cubital cellule at the top a 

 little longer than the first ; the first recurrent nervure received shortly beyond the 

 middle, the second in the apical fourth of the cellule. 



May be known from T. montezuma by its much more pilose body, by the more 

 strongly punctured abdomen, and by the hind tarsi being exactly twice the length of 

 the tibise, while T. montezuma has them at least 1 millim. longer than that. 



6. Tiphia clypeata. 



Tiphia clypeata, Smith, Descr. of New Species of Hymen, p. 187 (1879) l . 

 Eab. Mexico, Oaxaca 1 . 



7. Tiphia subspinosa. 



Tiphia subspinosa, Smith, Descr. of New Species of Hymen, p. 187 \ 

 Hal. Mexico 1 . 



8. Tiphia intricata. 



Tiphia intricata, Smith, Descr. of New Species of Hymen, p. 188 \ 

 Eab. South Mexico, Eastern slope of the mountains and Oaxaca 1 . 



ii. Fore wings with three transverse cubital nervures, the first abbreviated. (Species 9.) 



9. Tiphia gaumeri. 



Long. 9 millim. 



Eab. Mexico, Temax in North Yucatan (Gaumer). 



Head shining, bearing moderately large, widely separated punctures ; the cheeks 

 and the clypeus with long fulvous hair, the vertex almost glabrous ; the middle of the 



