THe CRANE-FLIES OF NEw YorK— Part [| 899 
life is spent presumably in damp earth, a very different habitat from that 
of the closely related gerus Elephantomyia. The following key divides 
the local species: 
Cell 1st M2 closed; body coloration brownish yellow; size, wing 6.5 mm. [ Toxorrhina magna 
O. 8. Proc. Ent. Soc. Phila., vol. 4, p. 232. 1865.] (Plate XX XIII, 45.) 
: T. magna (O. §.) 
Cell 1st Mz open by the atrophy of the medial cross-vein (closed in abnormal specimens 
only); body coloration gray; size smaller, wing less than 5.6 mm. [Tozxorrhina muliebris 
O.S. Proc. Ent. Soc. Phila., p. 233. 1865.] (Plate XX XIII, 46.)..7. muliebris (O. S.) 
The small T. mulzebris is northern in its distribution, while the larger 
T. magna is much more southern. 
Genus Atarba Osten Sacken 
1869 AtarbaO.S. Mon. Dipt. N. Amer., part 4, p. 127-128. 
A small number of species (about eight) are included in the genus 
Atarba, most of them belonging to tropical South America. In many 
of the species, including the local A. picticornis, the antennae of the male 
are elongated and beautifully annulated with yellow and brown. As has 
already been pointed out by the author a number of times, many of the 
species of crane-flies described by various workers as species of Atarba 
are in reality members of the aberrant eriopterine genus Gonomyia, 
subgenus Leiponeura (Alexander, 1916:508-509). 
Atarba picticornis O. 8. | 
1869 Atarba picticornis O.S. Mon. Dipt. N. Amer., part 4, p. 128-129, pl. 1, fig. 13. 
Atarba picticornis is a rather common species, in suitable localities, 
flying in late June and July. The adult is reddish yellow; the antennae 
are yellow with the apical half of each flagellar segment dark brown; 
the abdomen is yellow with a black ring before the tip; the wings are pale 
yellow. Sc is short, the cross-vein r lacking; cell 1st Me is small, with the 
basal deflection of Cu inserted at its base (Plate XX XIII, 47). 
Genus Antocha Osten Sacken 
1859 Antocha O. 8. Proce. Acad. Nat. Sci. Phila., p. 219. 
The small genus Antocha includes about seven described species in 
the Northern Hemisphere. The immature stages are strictly aquatic, 
the pupae having branched pronotal breathing horns as in Simulium. 
