to be a good carrier of filariasis, is common Locally, and this species was 

 subjected to an investigation. As a result it appears that the parasite 

 develops quite as well' in C.faligans at Batavia as it does elsewhere. 

 The problem therefore remains unsolved. It is perhaps possible that in 

 freedom the mosquitos prefer to feed on healthy human Ix'ings rather 

 than on individuals suffering from filariasis. 



Dyar (H. G.). The Classification of American AMcs (Diptera, Culicidae). 



—Insecutor Inscitiae Mcnstrnus, Washington, D.C., \iii, no. 7-9, 

 July-September 1920, pp. 103-106. 



The American species of Aedes are here divided into subgenera on 

 the characters of the male hypopygium [R.A.E., B, vi, 142]. A key 

 is given to the subgenera in question, viz., Howardina, Heteronycha 

 Taeniorhynclms, Finlaya, Stegoniyia, Aedes and Ecculex. Heteronycha 

 is also divided into groups, using the same characters, and a key is given 

 with a list of the species in each group. The present arrangement 

 replaces that given formerly [loc. cit.]. 



Dyar (H. G.). The American Aedes of the stimidans Group (Diptera, 



CuUcidae). — Insecutor Inscitiae Menstriius, Washington, D.C., \\n, 

 no. 7-9, July-September 1920, pp. 106-120. 



Notes are given on the adults and larvae of the American Aedes of 

 the stimidans group of the subgenus. Heteronycha [see above]. This 

 group is divided, with a key, into series, species and subspecies. The 

 following new subspecies are described : — Aedes stimidans mississippii, 

 A. stimidans classicus and A. stimidans albertae. 



Dyar (H. G.). The Larva of Aedes campestris, Dyar& Knab (Diptera, 

 Culicidae). — Insecutor Inscitiae Menstruus, Washington, D.C., 

 viii, no. 7-9, July-September 1920, p. 120. 



The larva of Aedes campestris, found in salt marshes in Utah, is 

 described. 



Dyar (H. G.). A Note on Aedes niphadopsis, Dyar& Knab (Diptera, 



Culicidae). — Insecutor Inscitiae Menstruus, Washington, B.C., 

 viii, no. 7-9, July-September 1920, pp. 138-139. 



The male and larva of Aedes niphadopsis are here described from 

 Utah, the female onlv having been previously known [R.A.E., B, 

 vi, 86]. 



Dyar (H. G.). The Grabhamia Group of Psorophora (Diptera, 

 Culicidae). — Insecutor Inscitiae Menstruus, Washington, D.C., 

 viii, no. 7-9, July-September 1920, pp. 140-141. 



The species of the Grabhamia group of Psorophora are themselves 



divided into two series, in the second of which, comprising the 



jamaicensis group, it is considered that too many names have been 



, recognised. Of the four species here given as comprising the latter 



group, one, Psorophora funiculns, from Colombia, is described as new. 



