IPHIATJLAX. 348 



furrows along the side, the outer one reaching to the extreme base and shallower than 

 the inner. Second segment with a broad depression on either side ; in the centre are 

 two furrows uniting not far from the suturiform articulation ; into the latter runs from 

 each side, obliquely, and joining it not far from the middle, a somewhat narrower 

 furrow ; the central furrow itself is striated, as is also the transverse one at the apex 

 of the next segment. Legs covered with a white pubescence; apices of the tarsal 

 joints fuscous. Palpi pilose, black ; tips of the mandibles piceous. Below the base of 

 the stigma is a curved hyaline cloud occupying the greater part of the cubital cellule 

 and the angle formed by the recurrent and cubital nervures. 



/3. Legs more or less black. (Species 21 & 22.) 



>C 21. Iphiaulax calderensis. (Tab. XIV. fig. 6, $ .) 



yKufo-testaceus ; capite, antennis pedibusque anterioribus, nigris ; tibiis tarsisque posticis fuscis ; alis fuscis,. 



coste testaceo, stigmate ocbreo. $ . 

 Long. 11 millim. ; terebra 6 millim. 



Rah. Panama, Caldera in Chiriqui 1200 feet (Champion). 



Antennae as long as the body, perceptibly tapering towards the apex, covered with a 

 close pile; basal joint longer than the third and fourth joints united, thick, shining,, 

 scarcely transverse at the apex. Head below the antennae densely covered with long, 

 stiff, silvery-white hair ; front and vertex shining, almost glabrous ; front broadly, but 

 not deeply, hollowed ; the central furrow moderately deep. Eyes roundly oval, widely 

 distant from the base of the mandibles ; projecting, the head retreating considerably 

 behind them. Thorax shining, the sides and metanotum sparsely covered with short 

 depressed hair ; metanotum with a gradual slope to the apex, the sides faintly punc- 

 tured. Petiole abruptly, deeply excavated at the base ; the central part tongue-shaped, 

 widest at the apex, which is transverse ; the inner furrow wide, moderately deep ; there 

 are four transverse keels at its apex ; the outer furrow is hidden under the stout, sepa- 

 rating keel. Second segment with the raised area reaching a little beyond the middle, 

 and becoming narrowed gradually to a point at the apex, and bounded by a not very 

 deep furrow, which is finely rugose ; the lateral furrow goes obliquely from the base of 

 the central raised part to the sides, but does not reach the apex. Suturiform articula- 

 tion moderately deep, faintly aciculated ; the second furrow is narrower, the third furrow 

 a little narrower than the second. Legs pilose, less so on the femora than on the tibiae 

 and tarsi ; black, the apex of the hind coxae beneath and entirely so above and laterally, 

 the base of the trochanters, and the underside of the femora, red. Wings dark fuscous, 

 the stigma bright ochreous-yellow, palest below the costa ; there is an oblique white 

 cloud in the first cubital cellule which is continued in front of the transverse basal 

 nervure ; the latter is received in an angle in front of the first transverse cubital 

 nervure. 



