INSECUTOR INSCITI^ MENSTRUUS 83 



Edwards mentions two species as transitional to Bcculex, 

 namely annul if cms Ludlow and fryeri Theobald. He says the 

 basal lobes are developed into small harpagones, which have a 

 short straight terminal spine. Without seeing specimens, no 

 opinion can be rendered. I shall be surprised, however, if 

 these species do not fit into place in the Old World series with- 

 out any relation to Ochlerotatus. 



Bcculex Felt. Founded on vexans Meigen and including 

 also a large number of allied species. This is a typical Old 

 World group. 



Acdimorphns Theobald. Side piece without lobes ; clasp 

 filament various ; harpagones absent. The species are un- 

 known to me, but, on the definition, clearly an Old World 

 group. Edwards states that it seems to merge on the one hand 

 into Ecculex and on the other into Stegomyia. This I can 

 readily believe. 



Aedes Meigen. Twelve species are referred here, having 

 short palpi in the male. Sketches are given of the genitalia ; 

 but Edwards does not attempt a definition on account of their 

 diversity. After studying the remarkable development shown, 

 I believe that the processes of the side piece do not represent 

 the clasp filament, which is absent. The harpes are variously 

 modified and the basal membrane as well. We have here a 

 very distinct group of the Old World type. It is unfortunate 

 that this aberrant group must give its name to the whole 

 genus. 



Skusea Theobald. Five species are mentioned, of which 

 the genitalia are sketched. All the species are unknown to me. 

 They seem peculiar and modified. Edwards describes them 

 thus: "Male genitalia with five or six long processes which 

 have apparently been derived from the basal lobes of the side 

 piece, but in some cases have become nearly apical, resembling 

 the somewhat similar structures of Culex." In the discussion, 

 he speaks of an harpago, but it does not appear that that struc- 

 ture is really present. It is difficult to deal with these aberrant 

 forms on second-hand information ; but, as far as I can see, 

 this is an Old World group. 



