338 HYMENOPTEEA. 



13. Iphiaulax zapotensis. (Tab. XIV. fig. 2, $ .) 



Niger; abdo min is segmentis l°-4 m pedibusque luteis; apiee tibiarum posterioribus tarsisque posterioribus, 



nigris ; alis flavo-hyalinis, apice fasciaque medio fuscis, stigmate flavo. $ . 

 Long. 10 millim. ; terebra 7'5 millim. 



Hab. Guatemala, Zapote (Champion) ; Panama, Bugaba 800 to 1500 feet (Champion). 



Antennae longer than the body, densely covered with microscopic pile, the scape with 

 scattered longish hair; shining; third joint a little longer than the fourth. Head 

 sparsely covered with longish pale hair ; face finely punctured ; vertex shining, impunc- 

 tate, slightly depressed in the centre ; a furrow proceeding from the ocelli to the 

 antennas. Thorax shining, impunctate, sparsely covered with pale hair ; the oblique 

 suture below the tegulae deep. The furrows surrounding the tongue-shaped centre of 

 the petiole broad, not very deep. Second segment with a large, oblique, deep depression 

 on each side ; a carina runs down the centre, having its origin in a small triangular 

 field at the base ; the furrow at the apex broad and deep, obscurely reticulated, and 

 ending on each side in a deep triangle, which runs in the direction of the larger lateral 

 depression issuing from the base. The depression at the base of the third segment is 

 narrow. Legs pilose, the hind spurs yellow. The wings are coloured as in I.peronatus* 

 except that, if anything, the clouds are darker and extend more into the stigma, while 

 the second cubital cellule is wider and somewhat shorter. 



b. Wings fuscous only at the apex ; legs for the greater part black. (Species 14.) 



>1 14. Iphiaulax pulchripes. (Tab. XIV. fig. 3, $ .) 



Lqfteus ; antennis pedibusque nigris ; coxis, femoribus posticorum dimidio basali basique tarsorum postieorum, 



runs : alis flavo-hyalinis, apice fumatis, nervis stigmateque flavis. 2 - 

 Long. 10-5 millim. ; terebra 9 millim. 



Hab. Panama, Bugaba (Champion). 



Antennas longer than the body, microscopically pilose ; third and fourth joints 

 subequal. Head covered with longish pale hair ; face finely punctured ; vertex shining* 

 impunctate, not depressed above the antennae ; a deep furrow leads down from the 

 antennae ; tips of the mandibles piceous. Thorax shining, impunctate. Petiole 

 depressed at the base ; two wide furrows along the sides, the inner one the shortest and 

 widest. In the centre of the second segment is a raised field, which curves round to a 

 point, and is prolonged as a broad keel to the transverse groove ; the latter is broad and 

 longitudinally striated, the lower bifurcation being also striated ; the furrow in the 

 third segment is also longitudinally striated. Cubital nervure roundly curved at the 

 base ; the second cubital cellule considerably shorter than the third. The joints of the 

 tarsi (especially of the anterior and posterior pairs) are reddish ; the spurs are black. 



