Vol. XXl] ENTOMOLOGICAL NEWS. 263 



ous genera proposed by Theobald will be available for them. 

 Such, perhaps, may be iMansonioides; but this question must be 

 left open until the Oriental mosquitoes are carefully revised. 



To summarize, Mansonia, properly understood, includes spe- 

 cies which have been placed in at least three different genera 

 by recent workers, Mansonia, Tacniorhynchiis and Chrysoco- 

 nof>s. All three of these genera have been founded upon scale 

 characaters and are composite in character. We have just 

 shown this in the case of Mansonia. In the case of Tacni- 

 orhynchns, if the species have been correctly identified, the 

 genus was heterogeneous from its inception. Taeniorhyn- 

 cluts confinnis Arrib. belongs to Acdcs in the broader sense. 

 C'ulc.r fulvus Wiedemann, which was placed in Tacniorhyn- 

 chiis by Theobald, was afterward made the type of the genus 

 Chrysoconops gocldi. It is an Aedes, and closely related to 

 Aedcs bimaciilatus Coquillett. The oldest of the three generic 

 names is Taeniorhynchus, but it is not available in this con- 

 nection. Arribalzaga included in his genus Taeniorhynchus 

 three species, taeniorhynchus Wiedemann and two other new 

 species, fasciolatns and confinnis. By the rule of tautonomy, 

 taeniorhynchus Wied. becomes the type, and, as this is an 

 Aedes, the name falls as a synonym of Aedes. Theobald has 

 complicated the situation by raising the question of the identi- 

 fication of Arribalzaga's specimens. He claims that Arribal- 

 gaza's taeniorhynchus was really titilians Walker, for which 

 he proposed a new generic name, Panoplites (later changed to 

 Mansonia by Blanchard on account of pre-occupation and 

 designated fasciolatus as the type of the genus Taeniorhyn- 

 chus. As we understand the rules, the "first reviser" principle 

 does not apply until the other means of determining the type 

 are exhausted. So Theobald was not justified in specifying 

 fasciolatus as the type, which was already taeniorhynchus by 

 tautonomy. Neither was he justified in questioning the iden- 

 tity of Arribalzaga's specimens. We consider that stability 

 can only be secured by taking the names of type species at 

 their face value without regard to questions of identification 



