162 HYMENOPTEEA. 



broadly) abdominal segments rufous, running, however, imperceptibly in some places, into 

 the dark brownish-red colour of the body ; this last colour again on the thorax and 

 head running into black. The antennae are scarcely so long as the abdomen and thorax 

 together; the joints are not much serrated. Metathorax coarsely punctured, the punc- 

 tures forming irregular reticulations at the base ; the apex has a rounded and gradual 

 slope ; the areae are not clearly denned, the keels running into and becoming confused 

 with the punctuation; the sides are light rufous, the centre darker; there are no 

 lateral tubercles. The sides of the postpetiole are punctured, the centre longitudinally 

 striated. The rest of the abdomen finely and closely punctured. Areolet 5-angled, 

 longish ; the sides converging towards the top. 



I. tepidus is a very close ally of I. opiparus, but the latter may be known from it by 

 the apex of the metathorax having an abrupt slope (not rounded at the upper part as in 

 I. tepidus), the centre too being distinctly hollow. In /. tepidus the punctuation is 

 stronger over all the body; the wings clearer; the areolet compared to its breadth 

 shorter, and wider at the upper part ; and the pubescence is denser. 



57. Ichneumon sallsei. 



Mger ; facie, orbitis oculorum, scutello pedibusque rufo-flavis ; coxis trocbanteribusque flavis ; femoribus posticis 

 fere totis, apice tibiarum coxisque posticis, nigris ; abdomine fulvo, segmentis 3°-5 m margine basali basique 

 nigris ; alis flavo-fumatis, costa et stigmate fulvis. S • 



Long, fere 16 millim. 



Hob. Mexico (Salle). 



Head and thorax covered with white glistening hair. Vertex coarsely punctured, 

 face obscurely aciculated. Above the antennae the front is deeply excavated, smooth, 

 and shining ; below the antennae the head is entire fulvous yellow ; on each side of the 

 clypeus above is a round fovea ; the yellow border along the eyes scarcely reaches to the 

 ocelli. Scape yellow beneath, black above ; [flagellum broken off ]. Pronotum project- 

 ing, the side of the collar hollow, bordered behind ; the middle of the pronotum fulvous 

 above. Thorax coarsely punctured. Scutellum raised, smooth, and shining ; subtrun- 

 cated before and behind, much broader behind than at the apex. Metathorax with a 

 gradual slope, and hollow in the middle behind. Petiole shining, faintly aciculated ; the 

 apex with a few punctures ; the centre hollow, the hollow carinated, the keels extending 

 to near the apex. Abdomen obscurely aciculated. Gastrocoeli broad, large, finely 

 aciculated ; the bands on the third, fourth, and fifth segments are broad. The coxae 

 (especially the posterior pair) are punctured, but not very closely ; the sides hollow 

 and shining ; the anterior pair black above and behind. The posterior trochanters are 

 black at the base on the inner side. 



It is possible this may be the male of I. illacessitus, but, apart from the difference in the 

 coloration of the posterior legs, the four anterior coxae are yellow. The scutellum is 

 longer compared to its width, and narrower at the apex. The petiole is not so shining 

 above, and it is, if anything, longer, and more pubescent. 



