MICEODUS.— AGATHIESIA. 407 



furrow in the centre, and another furrow at the apex, the third segment with a broader 

 furrow a little before the middle ; the surface of the segments before and behind these 

 furrows longitudinally striated. The apical segments each bear a row of white hairs. 

 Legs covered with a dense white pile ; the hind coxae red, except at the apex beneath ; 

 the hind tibiae broadly in the middle, and the base of the hind tarsi, obscure testaceous, 

 the spurs clear testaceous. Wings : the outer nervure of the cubitus completely obli- 

 terated, as is also the cubital nervure beyond the areolet ; the nervures at the apex, and 

 the stigma on the lower side, fuscous. 



12. Microdus montivagus. (Tab. XVI. fig. 18, $ .) 



Niger, abdominis segmentis 2°-7 m rufis ; alia fuscis. $ . 

 Long. 5 millim. ; terebra 4-5 millim. 



Hab. Mexico, Ciudad in Durango 8100 feet (Forrer). 



Antennae 29-jointed, as long as the body, closely pilose. Head shining, impunctate, 

 rather closely covered with a greyish pile. Thorax shining, impunctate, the sides 

 densely covered with silvery-white pubescence ; metanotum with some indistinct keels, 

 which do not enclose regular areae. Abdomen not much longer than the head and 

 thorax united; petiole deeply excavated in the centre at the base, the central part 

 raised, sharply margined, and with some longitudinal striations; a narrow transverse 

 striolated furrow in the centre of the second segment, and a less distinct one near the 

 base of the third segment ; an oblique furrow on either side of the second segment 

 at the base. Areolet narrow, triangular, shortly pedunculated. 



AGATHIRSIA. 



Agathirsia, Westwood, Tijdschr. voor Ent. xxv. p. 20 (1882) . 



This genus apparently only differs from Microdus in the labium being greatly 

 elongated, forming a sort of rostrum. The four described species are from Mexico. 



-*~"Y"1. Agathirsia rufula. 



Agathirsia rufula, Westw. Tijdschr. voor Ent. xxv. p. 21, t. 5. ff. 1-4 \ 



Hab. Mexico, Chapultepec {Coffin x ). 

 ■— * \2. Agathirsia rufiventris. 



Agathirsia rufiventris, Westw. Tijdschr. voor Ent. xxv. p. 21, t. 5. ff. 5-8 \ 

 Hab. Mexico (Coffin x ). 



-+" 3. Agathirsia proxima. 



Agathirsia proxima, Westw. Tijdschr. voor Ent. xxv. p. 22 \ 

 Hab. Mexico (Coffin 1 ). 



