1896.] NATURAL SCIENCES OF PHILADELPHIA. 297 



punctured, the fifth more strongly, the base of 3 and 4 transversely 

 smooth ; ventrals with a series of strong punctures before apical 

 margins, from which pale hairs project, otherwise sparsely punctured; 

 pygidial area longitudinally and evenly striated ; pubescence of 

 body pale, a rather prominent bunch on each side of the first dorsal 

 segment ; wings subfuscous, the anterior portion of the anteriors 

 deeply clouded, nervures black. Length 15 mm. 



Chapada (March). One specimen. Seems to be very distinct as 

 regards coloration and sculpture of middle segment. 



Myzine iridescens n. sp. 



9 . — Black ; abdomen iridescent, especially the first dorsal seg- 

 ment; inner orbits, metanotum, and a dot on each side of the first 

 dorsal segment of abdomen, yellow ; pubescence pale ; clypeus with 

 fairly strong punctures, except in the middle, which is longitudinally 

 smooth and raised or carinated ; front with large, deep punctures 

 closer than in radiata ; occiput with large, rather sparse punctures, 

 its posterior margin with finer and closer ones ; ocellar region almost 

 impunctate ; scape distinctly punctured ; pronotum with large, 

 though not deep, somewhat confluent punctures ; dorsulum with the 

 punctures on anterior portion fine and cl9ser, on the remainder 

 stronger and sparser than those of the pronotum ; scutellum with large, 

 separated punctures, upper surface of middle segment at base finely 

 and closely punctured, apically rugose, particularly in the middle ; 

 posterior face covered with fairly sti'ong, close stride which radiate 

 from the apex, become coarser laterally, and extend on sides where 

 they are finer and evener ; sides of prothorax finely striated obli- 

 quely; mesopleurffi with large, deep punctures ; calcaria and spines 

 of the legs white ; the tibiae and tarsi obscurely rufo-testaceous ; 

 abdomen above rather finely punctured, most strongly on segments 

 4 and 5, and at the sides, base of 2-4 transversely smooth ; ventral 

 segments with large, sparse punctures, a transverse series before the 

 apical margins of segments 2-5 ; pygidial area longitudinally striated ; 

 wings subfuscous, the anterior portion, of anteriors deeply clouded, 

 nervures and tegulfe in part testaceous. Length 12 mm. 



Chapada (December). One specimen. This is very similar super- 

 ficially to radiata, but diflfers in much finer sculpture of thorax, 

 particularly the middle segment. 

 Tiphia parallela Sm. 



Chapada (December and January); Santarem (February); Villeta 



(May). Seven specimens. 

 20 



