296 



the surface hairs very minute and erect, and the basal joint of the tarsi 

 much longer than the second. In two species described herewith the 

 wings are unspotted. 



The larvae are aquatic in habit, and as far as known all of the spe- 

 cies are bloodsuckers in the adult stage. 



Key to Species in State Laboratory Collection 



1. Wings clear, entirely unspotted 2 



— Wings distinctly spotted 3 



2. Mesonotum with numerous small brown dots arranged in irregular 



longitudinal series 1. multipunctatiis. 



Mesonotum with a few large bro\vn marks (PL XXIII, Fig. 3) . . . . 

 2. liieroglypliicus. 



3. Mesonotum with numerous small brown dots arranged in irregular 



longitudinal series ; wing as in Figure 2, Plate XXII 



3. varipennis. 



— Mesonotum with large brown marks on a grayish brown ground, 



or whitish pruinescent marks on a bi'own ground 4 



4. Mesonotum marked with white as in Figure 1, Plate XXIII 5 



— Mesonotum either indistinctly marked or with dark brown marks . . 6 



5. Anterior branch of media with a white spot close to base (PI. XXII, 



Fig. 4) 4. guttipennis. 



— Anterior branch of media without white spot near base 



5. stellifer. 



G. Spots on wings indistinct (PI. XXII, Fig. 3) ; mesonotum without 



well-defined marks ; hypopygium as in Figure 18, Plate XX 



6. smiguisugus. 



— Spots on wings clearly defined ; mesonotum with well-defined brown 



marks 7 



7. Wings with the clear spots rather small, the spot beyond the one at 

 apex of third vein situated at the apex of anterior branch of me- 

 dia, and like the outer one in the second and third posterior cells 



touching the margin of the wing (PI. XXII, Fig. 6) 



7. lifvm.ctiopofus. 



— Wings with the clear spots large, the spot beyond the one at apex of 



third vein situated distinctly before apex of first posterior cell, the 

 outer spot in second and third posterior cells separated from mar- 

 gin of wing (PI. XXII, Fig. 7) 8. crepnscv.laris. 



I. CULICOIDES MULTIPUNCTATUS, n. sp. 



Female. — Opaque gray. Head brownish ; antenn?e and palpi pale 

 brown, the former yellowish towards base. Thorax densely covered 

 with gray pruinescence, the disc of mesonotum with numerous small 

 brown dots arranged in three longitudinal series, the median one con- 

 sisting of three rows of regularlv rounded small dots which are dis- 



