528 



Type locality, St. Joseph, 111., May 17, 19 14, swept from vegeta- 

 tion on bank of Salt Fork (J. R. Malloch). 



This species differs in venation from hrcriucrvis, and might rea- 

 sonably be considered as generically distinct. Owing to the doubt I 

 have as to the venation of the genotype I consider it advisable to leave 

 both species in Dactylocladiiis until I obtain information upon this 

 point, or until some other worker supplies the necessary data. 



3. DACTYI.OCI.ADIUS ALBIDOHALTERALIS, n. Sp. 



Female. — Glossy black. Head, including antenn?e, fuscous. Meso- 

 notum without pruinescence. Abdomen unicolorous black, less dis- 

 tinctly glossy than mesonotum. Legs whitish yellow, femora fuscous. 

 Wings smoky, veins brown, base of wung, including the veins, whitish. 

 Halteres yellow, knobs white. 



Antenna about as long as head and thorax together, intermediate 

 flagellar joints each about five times as long as their diameter, sensory 

 organs weak, hairlike. Legs rather stout ; basal joint of fore tarsi 

 about half as long as fore tibise ; fourth and fifth joints of hind tarsi 

 subequal; empodium larger than claws, long-fringed. Third vein end- 

 ing just beyond beginning of apical curve of wing, slightly sinuate, 

 costal vein continued beyond apex of third ; distance from cross vein 

 to apex of first about half as great as that from apex of first to apex 

 of third ; second vein distinct ; cubitus forking distinctly beyond cross 

 vein. 



Length, 1.25 mm. 



Type locality, Monticello, III, June 30, 19 14, on bank of Sanga- 

 mon River (C. A. Hart and J. R. Malloch). 



This species bears a strong resemblance to Camptocladius flavi- 

 basis, but is readily distinguishable by the fact that the posterior 

 branch of the cubitus is not bisinuate. 



UnidentifiKd Larv.^ and PupyE of Chironomin.^ 



In the collection of the State Laboratory of Natural History there 

 are many specimens of larvae and pupae of Chironomince which it has 

 not been found possible to associate with imagines. Most of these 

 specimens were obtained during the years 1912-13, when press of 

 other work and want of facilities for rearing the larvae prevented any 

 attempt to secure data bearing on the specific identity of the material 

 obtained. During 1914 several species were reared by the writer and 

 the connection established between larva, pupa, and imago ; but the 

 species included in the subsequent part of this paper must remain in 

 their present specifically unidentified condition until some one sue- 



