509 



2. Camptocladius lasiophthalmus, n. sp. 



Female. — Brownish black, shining. Head black, antennae and 

 palpi fuscous. Mesonotum with slight grayish pruinescence on disc. 

 Abdomen black, subopaque, venter yellowish. Legs brownish yellow, 

 trochanters and bases of femora yellow. Wings grayish, veins brown, 

 base of wings and of veins whitish yellow. Halteres brownish yellow. 



Eyes hairy. Antenna with oval flagellar joints, much longer than 

 their diameter, sensory organs hairlike, similar to those shown in Fig- 

 ure 15, Plate XXXV'lII, Pronotum rather broad, no central dorsal 

 excision. Mesonotum produced very distinctly anteriorly, surface 

 hairs strong but sparse, pruinescence sparse. Abdomen with rather 

 strong hairs. Legs of moderate strength ; basal joint of fore tarsi half 

 as long as fore tibiae ; mid and hind legs with rather short hairs ; apical 

 spurs on hind tibiae short, empodium about as long as claws, distinctly 

 fringed. Third vein ending slightly beyond beginning of apical curve 

 of wing and apex of upper branch of cubitus; costal vein extending 

 almost to apex of wing; distance from cross vein to apex of first less 

 than distance from apex of first to apex of third ; cross vein distinctly 

 proximad of wing-middle ; cubitus forking distinctly beyond cross 

 vein, posterior branch rather abruptly sinuate at middle. 



Length, i mm. 



Type localitv, Dubois, III, April 24, 1914 (C. A. Hart and J. R. 

 Malloch). 



A male taken at the same time and place may belong to this species. 

 It resembles very closely the male of lasiops, but differs in being 

 smaller and in having the posterior branch of the cubitus more 

 abruptly bent and the distance from cross vein to apex of first shorter 

 in comparison with the distance from apex of first to apex of third. 



3. Camptocladius byssixus Schrank 



Tipula iyssinus Schrank, Fauna Boica, Vol. 3, 1803, p. 2330, sp. 76. 

 Chironomus byssijius (Schrank) Meigen, Syst. Beschr. Eur. Zweifl. Ins., Vol. 1, 



1818, p. 58. 

 Camptocladius iiissiniis (Schrank) A^an der \Vulp, Tijdsehr. v. Ent., Vol. 17, 



1874, p. 133. 



Male. — Deep velvety black, disc of thorax slightly shining. Head 

 black, antennal plumes black at bases, whitish apically. Legs black, 

 bases of tarsi yellowish. Wings milky, a longitudinal black streak on 

 base, veins colorless. Halteres black. Hairs on body and legs whitish. 



Head very similar to that of lasiops except that the eyes are bare. 

 Pronotum narrow. Hypopygium as in Figure 11. Plate XL. Basal 



