I 



Ilymdiopterous Genera Myzine and Plesia. 513 



punctmed; the first se<?ment truncate anteriorly, about one- 

 quarter narrower at the apex than the second se<;ment. 

 E|)ipyf2,ium h)ngitudinally striated, rounded at the apex ; 

 l)ypo])y<iium subtruncate at tlie apex. The first joint of the 

 posterior tarsi is about twice as long as the second, sjiinose 

 on the outer margin from tlie base to the apjx and with a 

 comb of short s])ines beneath. 



Black ; the abdomen with faint blue reflections ; the inner 

 margin of the eyes very narrowly, the postscutellum, a longi- 

 tudinal mark on each side of the median segment near the 

 apex, a broad band strongly emarginate posteriorly with a 

 small black spot on each side of the emargination on the first 

 ab lominal segment and a narrow transverse band close to 

 the base of the third segment yellow ; the apex of the epi- 

 pygiuni verv narrowly testaceous ; the spines of the tibiae 

 wiiitisii. Wings pale fusco-liyaline, tinged with viohiceous, 

 a much darker band broadening to the apex along the costa, 

 nervures fuscous. First recurrent nervure received by the 

 second cubital cell at three-fifths from the base, the second 

 received by tiie third cubital cell at two-fifths from the b ise. 

 (Second cubital cell very long, more than half as long again 

 on the cubital as on the radial nervure, one-third longer on 

 the radial nervure than the third cubital cell and nearly twice 

 as long on the cubital nervure. The third cubital cell is 

 rhomboidal, broader than long, the third transverse cubital 

 nervure very slightly arched, joining the radial cell at its 

 extreme apex, c? unknown. 



Length 16 mm. 



Ilab. llio Grande do Sul. 



Type in B. M., received from Dr. Ihering. 



Allied to F. dichroa, Perty. 



Pleaia andina, sp. n. 



? . Clypeus very closely punctured, raised in the middle 

 into an ill-defined, longitudinal carina and very broadly 

 rounded at the apex. Front closely and coarsely puncture. I, 

 the vertex more sparsely punctured, the area n-und the 

 anterior ocellus almost smooth. The posterior ocelli are 

 further from the eyes than from each other and a little further 

 from each other than from the anterior ocellus ; they are 

 situated on the inner margin of a small depression. Tho 

 inner margin of the eyes very broadly and shallowly emar- 

 ginate. ^cape very sparsely j)unctured beneath, with a few 

 pale fulvous hairs, more closely punctured above; as long as 

 juints 2-4 of the ilagelluiii combined. Mandibles with a 



