296 PROCEEDINGS OF THE ACADEMY OF [1896".. 



postero-latei'al angles of the latter, spot on all the cox£e beneath, and' 

 above on the posterior pairs, femora except base, remainder of legs 

 except stripe on tibiae beneath and a ring at apex of tarsal joints, a 

 thrice eniarginate fascia at apex of dorsals 1-6, the first broadest, 

 the last interrupted medially, and a elongate spot on each side of 

 ventrals 2-5, all yellow ; wings hyaline, faintly dusky at apex, stigma 

 testaceous ; antennae but little longer than the combined length of 

 head and thorax ; front rather strongly and closely punctured, the 

 occiput much more finely so; middle segment above in the middle 

 strongly punctured, the posterior face closely and transversely striato- 

 punctate, on the sides.obliquely and more finely so ; abdomen above 

 with rather strong, separated punctures, beneath the punctures a 

 little finer and sparser. Length 15-17. 



This sex is very like the $ of flavopida, but is, as a rule, larger,*: 

 spots on postero-lateral angles of the middle segment larger, abdom- 

 inal fascise thrice emarginate, and the sculpture of the middle seg- 

 ment is less coarse. The spotted upper surface of middle segment 

 is constant in all but two of the twenty-two specimens before me. 



Myzine frontalis Burm. 



One specimen. Corumbii (April). 



Myzine radiata n. sp. 



9 . — Black ; abdomen iridescent ; spot on each side of clypeus, at 

 base of each antenna, inner orbits, two dots on metanotum, and a 

 small spot on each side of the first dorsal segment, yellow ; tibiie, 

 tarsi, mandibles and tegulse in part obscurely rufo-testaceous ; 

 clypeus with fairly strong punctures on each side, in the middle 

 longitudinally raised or carinated and impunctate ; front and occiput 

 with large separated punctures, which ai'e finer along the occipital 

 margin ; region including the ocelli almost impunctate ; scape dis- 

 tinctly punctured ; pronotum and dorsulum with strong, though not 

 very deep punctures, the posterior portion of dorsulum, however, 

 and the scutellum are longitudinally rugoso-punctate ; sides of pro- 

 thorax strongly and obliquely striated ; mesopleur?e with the punc- 

 tures deeper and more even than on pronotum ; upper surface of mid- 

 dle segment at base microscopically punctured, transversly strigose 

 posteriorly, posterior face with unusually coarse wrinkles orf olds ra- 

 diating rather evenly from apex and covering the entire surface, and 

 running into less coarse oblique strise on the sides; calcaria and 

 spines of legs white ; dorsal segments 1-4, rather finely and evenly 



