INSECUTOR INSCITI^ MENSTRUUS 141 



same as Anopheles lutzii Theobald (not Cruz) = A. crusii 

 Dyar & Knab, is in error. Kertessia is described as possessing 

 scales on the abdomen^ which is not the case with crusii. This 

 correction will have to be made in the place referred to and in 

 our later article (Ins. Ins. Mens., v, 38, 1917), by substituting 

 for the name bolk'iensis that of crusii. Kcrtessia, therefore, 

 is still unknown to us in nature ; but it evidently cannot be 

 used as a subgeneric name for the bromelicolus species, and for 

 these a new term will be required. We suggest Dendro- 

 poedium. This group is defined as having the thorax and 

 abdomen hairy, without scales, the head with upright scales 

 only. The thorax is elongated as in Anopheles proper and 

 Myzomyia, from which it differs in having the hairs of the 

 mesonotum not diffused over the surface, but gathered to- 

 gether in narrow depressed stripes, separated by broad straight 

 bare spaces. The wing-scales are lanceolate as in Anopheles. 



NOTES ON AMERICAN ANOPHELES 



{Dipt era, CuUcidcc) 

 By HARRISON G. DYAR 



An attempt is here made to recognize the Anopheline genera 

 proposed by Theobald in a subgeneric sense, using the scale 

 characters to form groups within the genus. The latest works 

 on the subject^ have abandoned these groups, and, as Stanton 

 remarks- "The natural affinities of species have been obscured 

 by the division of the group; into a multiplicity of genera." 

 Still, I think this is in part due to the somewhat uncritical man- 

 ner in which the scale-characters have been used. They are 

 not of generic importance, clearly ; but used as subgenera^ they 

 may be an assistance in classification. As used in the follow- 

 ing, it appears that allied species are grouped together, proper 



1 Edwards, Bull. Ent. Research, iii, 241, 1912; Stanton, Bull. Ent. Research, vi, 

 159, 1915; Christophers, Ind. Jour. Med. Research, iii, 454, 1916; Howard, Dyar & 

 Knab, Mosq. N. & Cent. Am. & W. I., iv, 962, 1917. 



- Stanton, Bull. Ent. Research, iv, 129, 1913. 



' Edwards at first (Bull. Ent. Research, ii, 141, 1911) used the names in the 

 sense here proposed, but later abandoned the practice. 



