49 



und more closely related to C. didtoni than to any other African 

 species ; Theohaldia arclica, from North Russia and closely related 

 to T. alaskaensis, Ludl, with which it may be identical ; and 

 T. indica, from the Punjab. 



Other species the synonomy of which is discussed are Anopheles 

 lujrcanus, Pallas {sinensis, Wied., 'pictus, Lw., pseiidopidns, Grassi). 

 Pallas' brief description is quoted. Although no collections of 

 mosquitos have been made since Pallas' time in the North Caspian 

 region, it is unlikely that any species other than A. sinensis to which 

 the description could possibly apply, occurs there ; the name liyrcaims 

 must therefore be substituted for the generally used sinensis. 



Anopheles subpicliis, Grassi, described in 1899, clearly indicates 

 A. rossi, Giles, and the fact that Grassi's description was drawn from 

 a specimen sent by Ross from Calcutta removes any doubt that 

 might exist on this point. Unfortunately, therefore, the rule of priority- 

 prevents the commemoration in nomenclature of the work of Sir 

 Ronald Ross. 



Ochlerotatus mspiius, Pallas, has the following synonyms, Culex 

 dorsalis, Theo. (? nee Meig.), Gmhhamia subtilis, Ed. & Et. Serg., 

 G. willcocksi, Theo., G. lomjisquamosa, Theo., Mansonia arabica, Giles, 

 Culex arahicus, Beck., ? 0. macuUventris, Macq., C. pidchri2Mlpi''i, 

 Theo. {nee Rondani), and C. penieillaris, Rond. It is doubtful whether 

 C. dorsalis, Meig., has been correctly determined by Theobald and 

 others and tlierefore caspins, Pallas, is suggested for the insect hitherto 

 recorded under this name. Pallas' description is short and rather vague, 

 but as he mentions the species being abundant and vicious in the marshes 

 of the North Caspian it is probable that he was dealing with one of 

 the common European salt-marsh breeders. His description indicates 

 the present species rather than 0. curriei, Coq., while definitely 

 excluding 0. salinus. Fie. This conclusion is confirmed to some extent 

 by the recent discovery of 0. dorsalis, Theo., in the South Caspian 

 region. Large series of this species have recently been taken in 

 Italy, Macedonia, Palestine, Egypt and Mesopotamia. 



0. curriei, Coq. {Culex onondagensis, Felt, and possibly C. 2mnctafas, 

 Meig., G. dorsalis, Meig., and GrahJtamia broquettii, Theo.) appears 

 to be a distinct species from the insect usually known as dorsalis 

 and from 0. salinus, in company with which it was taken. The 

 characters separating it from 0. caspius, Pallas (dorsalis, auctt.) are 

 given. Meigen's descriptions of C. punctatus and C. dorsalis do not 

 apply very well either to 0. caspius or to 0. curriei, though they almost 

 certainly refer to one or the other, probably to the latter. An 

 examination of the types is necessary to settle this point. 



Synonyms given for 0. rasticus, Rossi, are Culex pungens, R.-D., 

 C. quadrimaculatus, Macq., and C. dimrsus, Theo. 



In the case of Culex apicalis, Adams, {territans, H., D. & K., nee 

 Wlk., hortensis, Edw., nee Ficalbi, saxatilis, Dyar, and pijrenaicus, 

 Brolemann), the difference between the European and North American 

 forms is so minute that it is neghgible. The species is easily distin- 

 guished from C. hortensis. Fie. The larvae of both were recently 

 taken in the neighbourhood of Salonica, and it is evident from a study 

 of the material that the larva figured by Schneider is that of C. apicalis 

 and not of C. hortensis. 

 (656) B 



