MIMESA. 135 



with a hoary microscopic pile; the third joint slightly curved, nearly one quarter 

 longer than the fourth, and almost as long as the space between the hinder ocelli and 

 the eyes. Head finely, rugosely punctured, the top bearing long, erect, fuscous hairs ; 

 the face and vertex densely clothed with silvery, depressed hair. Thorax coarsely 

 aciculated ; the triangular area of the median segment strongly longitudinally strio- 

 lated, the rest of the segment rugose ; apex of the median segment with an oblique 

 slope. Petiole with the basal half narrow, of equal width throughout, with a slight 

 curve, not furrowed above or laterally; the sides with a distinct margin, the apex 

 gradually dilated. The abdominal segments shining, impunctate; the middle and 

 apical segments covered with a short pubescence. Pygidial area gradually narrowed 

 from the base to the apex ; above longitudinally rugosely punctured. The apex of the 

 petiole, the second segment, and the third segment broadly at the sides ferruginous-red. 

 Legs covered with a whitish pubescence; the spurs white; the inner spur of the 

 posterior tibiae thickened. Second cubital cellule narrowed above, not half the length 

 of the third; the transverse cubital nervures straight; the first recurrent nervure 

 received at half the length of the top of the second cubital cellule from the first trans- 

 verse cubital, the second recurrent nervure at half the distance from the second cubital. 

 Neuration of the posterior wings as in the typical species ; the nervures faint towards 

 the apex. 



B. Petiole abruptly dilated at the apex, longer than the thorax, laterally grooved. 



v 2. Mimesa pulchra. (Tab. VIII. fig. 16, $ .) 



Mgra, aurea, hirta, mesonoto punctato, antennarum dimidio basali, pedibus(basi nigra), tegulis, costa stigmateque 



fulvis ; alis f ulvo-hyalinis. $ . 

 Long. 10 millim. 



Hob. Mexico, Sierra de las Aguas Escondidas, Guerrero, 7000 feet (H. H. Smith). 



Vertex shining, sparsely and slightly punctured, sparsely covered with short golden 

 hairs ; the rest of the head is so closely covered with golden hair that the surface is 

 entirely hidden. Ocelli hardly forming a triangle ; there is a narrow furrow behind 

 them, and a much wider and deeper furrow runs obliquely from the posterior ocelli. 

 Frontal furrow narrow and indistinct. Clypeus convex, the apex broadly rounded, 

 almost transverse, a slight incision in its middle. Mesonotum opaque, closely and 

 rather strongly longitudinally punctured; the scutellum shining, sparsely punctured. 

 Pleura? shining, impunctate. Triangular area of the median segment with irregular 

 widely separated striae or keels ; the rest of the median segment irregularly rugosely 

 reticulated. Metapleurae shining, impunctate. The median segment is short, and 

 rounded gradually. The pronotum, the mesopleurae in front, and the median segment 

 are densely covered with fulvous-golden, the rest of the thorax with shorter fulvo- 

 fuscous, pubescence. Abdomen with the apices of the segments rufo-piceous ; the 



