478 PROCEEDINGS OF THE NATIONAL MUSEUM tol.i<» 



only in 1925 or very late in 1924. Fm-thermore, in the supplement, 

 Navds (1932, p, 155) stated that the specimen was caught "por la 

 luz" when the label actually read "a la luz." Upon comparing the 

 label with certain Dampf labels on mosquitoes in the U. S. National 

 Museum, it appears possible that the locality label on the type could 

 have been wi'itten by Navas himself, and not by Dampf. With the 

 above evidence taken into consideration, the designation of the type 

 locality is interpreted as follows: 



Holotype: a specimen from Rio Cacao, British Honduras, Oct. 

 16, 1925, at light (Dr. Alfonso Dampf); in the Instituto Municipal 

 de Ciencias Naturales Museos, Barcelona, Spain. 



Because the type specimen is reduced to the wings illustrated, 

 it is impossible to check other featm'es. Comparison of the descrip- 

 tions with specimens of apiccUis shows that the lengths of the fore- 

 wings and hindwings, and color of the vertex are similar. The vena- 

 tion is also strikingly similar. Whether the broad longitudinal fuscous 

 stripe over the thorax of nodurna, mentioned by Navds, is a significant 

 character is not yet known; it has not been observed in the other 

 species of Sisyra. It is possible that further collecting may show 

 nocturna to be a synonjon of apicalis. 



Sisyra nilnuta Esbt-n-Petersen 



FiouRE 15; Plate 1, fioure 6 

 Sisyra minuta Esben-Petersen, 1935, p. 152 (Taderinha, Brazil). 



Male (holotype): Head with vertex yellowish brown, narrow 

 median blackish streak over coronal sulcus from posterior margin 

 to midvertex distinct, narrow blackish ring ai'ound basal antenna! 

 segments; frons yellowish brown, clypeus and labrum yellow; palpi 

 brownish; basal two antennal segments brown, rest yellow, of at 

 least 31 segments; legs yellow; pronotum brown anteriorly, yellowish 

 posteriorly, brown at anterior margin, with central blackish longi- 

 tudinal streak, mesonotum and metanotum yellowish brown, meso- 

 thoracic and metathoracic pleiu-a brownish yellow; abdomen 

 brownish yellow. 



FoREWiNG (pi, 1, fig. 6): Length 3.2 mm., mdth 1.3 mm.; mem- 

 brane uniformly light brown with darker brown shading along apical 

 margin; veins slightly darker than membrane with small black 

 setal pits; Rl bent at an angle at junction with Sc, then dipping 

 strongly toward R2; Sc appeai'ing to run free to margin and joined 

 by a cross-vein; sectoral branches and MA forking near margin 

 far distad of level of junction of Sc and Rl; MPl+2 and MP3+4 

 forked more deeply, usually basad of above point, MPl-|-2 with 

 even fork to margin; Cul with two branches to margin; approxi- 



