234 MOSQCITOES 



It will bo noticed in the tables wliicli follow, Jiiid in the 

 consideration of mosquitoes and yellow fever in Chapter 

 V. that Mr. Coquillett and the writer have adopted the 

 generic name Steg-oniyia for the mosquito which has in 

 our previous writing-s been named (fulc.i'fasa'afia^. I have 

 been induced to adopt this name throut^h correspondence 

 with Mr. Theobald, who writes me that he has discovered 

 characters M'liich separate this mosquito from the old 

 g"enus C'ulex, and that he has ]iroposed the name Stej^fo- 

 myia for the genus. He has given m(^ no clew as to the 

 chai'acters upon which he has founded this genus, excei)t 

 that they are " scale characters." A study of the scale 

 structure of this insect and other mosquitoes of the genus 

 Culex does not reveal any very important differences, but 

 Mr. Coquillett, from other characters, has concluded to 

 adopt Mr. Theobald's generic name, and it is here used 

 with the characters pointed out in tlu; table. It will be 

 unfortunate should this use of the name antedate the 

 ]>ublication of Mr. Theobald's monograph, since the genus 

 should be his and not ours. Two other new generic names 

 pr()|)osed by Mr. Theobald, viz.: Toxorhyncliites and Con- 

 chy Hastes, have been adopted and are characterized in the 

 tables. It will be noticed that the characterizations are 

 jn'inted with quotation marks, and that they are followed 

 by ]Mr. Theobald's name in iinrenthesis. This method of 

 printing Avill mak(^ Mr. Theobald res]ionsible for these 

 genera as well as for Stegomyin, in the event that this 

 book is issued from the ])ress in advance of his publica- 

 tion. 



With these words of explMii.ition, the following tables, 



