INSEJCUTOR INSCITI^ MENSTRUUS 191 



below ; tarsi with very minute whitish rings, involving both ends 

 of the joints. Wing scales narrow, dark. 



Male hypopygium. Subapical lobe of side-piece with three 

 rods, a filament, a leaf and a seta. Mesosome stout, with two 

 long teeth from the apex, directed outwardly, the margin below 

 long, with minute denticles, ending with a long inner arm 

 (PI. V, fig. 4). Tenth sternites tufted with spines, the basal 

 arm long, at right angles, curved. Ninth tergites slight, with a 

 row of setae. 



Types, one male and four females, No. 35760, U. S. Nat. 

 Mus. ; Rosario, Bolivia (Lake Rocagua), November, 1921 

 (W. M. Mann, Mulford Biological Expedition). 



Doctor Mann reports that the country at Rosario is in gen- 

 eral open, supporting the Argentine fauna ; but that there occur 

 also little islands of forest. The present species apparently 

 belongs to these forest islands, and may have been previously 

 discovered in Brazil in some of the species of Theobald and 

 Lutz which are unknown to me. 



Culex (Choeroporpa) epanastasis, new species. 



The single male type is much damaged. Proboscis and palpi 

 black, the latter broken, but one remains entangled in the 

 antennae, and appears to have been fully as long as the pro- 

 boscis. Antennae plumose, the last two joints long and slender. 

 Vertex of head broadly covered with narrow curved golden 

 scales. Mesonotum denuded. Abdomen entirely black. Legs 

 black, the femora narrowly pale beneath, tips of femora dis- 

 tinctly white. Wing-scales black, rather broadly ovate. 



Male hypopygium. Side piece broadly triangular, longer 

 than wide ; both divisions of the lobe arise together, the inner 

 with a stout columnar stem, with a seta at the middle, two 

 stout, crooked, hooked, infuscated filaments arising at the tip, 

 the inner only a trace inserted basad of the outer ; outer division 

 with curved columnar base, forked, the two limbs equal in 

 diameter and length; a seta just before the furcation; outer 

 limb with four narrow filaments, not evenly inserted, the inner 

 one much longer than the others ; inner limb bearing the middle 



