330 HYMENOPTERA. 



v 2. Iphiaulax pulchripennis. (Tab. XIII. %. 23, $ .) 



Niger ; mesothorace abdominisque basi luteis ; alia fuseo-byalinis, medio apiceque fumatis, nervis nigris. $ . 

 Long. 19 millim. ; terebra 46 millim. 



Hab. Guatemala, Panima in Vera Paz (Champion) ; Costa Eica, Volcan de Irazu 

 6000 to 7000 feet (Sogers). 



Smooth, shining, impunctate ; face (especially the sides) and metathorax covered with 

 long pale hairs ; the lower part of the head with black hairs. Antennae as long as the 

 body ; the third joint distinctly curved, more than one half longer than the fourth. 

 Antennal tubercles closely punctured ; the face bears a few, almost obsolete punctures, 

 and in its centre are two longitudinal furrows leading to the base of the clypeus ; the latter 

 has two oblique furrows leading from the above pair, but not nearly so distinct ; ocelli 

 surrounded by a furrow, and a wider and deeper one leads down from them to the 

 antennae ; palpi fuscous, densely pilose. Middle lobe of the mesonotum not clearly 

 separated from the lateral one. The depression on the second segment commences a 

 little from the centre, curves round to the sides, goes straight down the latter, and then 

 curves again inwardly towards the middle, but not reaching it, and becoming shallower 

 towards the termination ; at the base of the third segment on either side is an oblique 

 depression, a little longer than broad, and not reaching to the side ; the apical segments 

 are pilose. The extreme base of the wing is smoky ; the blotch in the middle commences 

 at the transverse basal nervure and ends at the first transverse cubital ; the apical cloud 

 commences at the second transverse cubital ; in the hind wings the cloud occupies 

 scarcely the apical half. 



* 3. 



Liiteus; i 



Iphiaulax rogersi. (Tab. XIII. fig. 22, ? .) 



antennis, capite, abdominis apiee pedibusque, nigris; alis flavo-hyalinis, medio apiceque fumatis, 

 stigmate sordide flavo. $ . 

 Long. 18 millim. ; terebra 51 millim. 



Rah. Costa Rica, Volcan de Irazu 6000 to 7000 feet (Bogers). 



Similar in coloration to the preceding, except that the metathorax is luteous and 

 the stigma yellowish. It also differs in the apex of the clypeus being almost trans- 

 verse, and not gaping so much over the mouth ; in the transverse basal nervure being 

 completely interstitial; in the antennae being, if anything, thinner and shorter; the 

 ovipositor longer ; the clouds in the wings lighter in tint, the stigma yellower, the 

 second cubital cellule longer compared to the third ; the abdomen narrower, &c. 



