164 Di/ar and Knob — Some American Mosquitoes. 



tlie island of Trinidad. Mr. Urich secured the larvae, which are peculiar, 

 Avith a dense coat of fine long pile. They fall in our table with p)iilo!<op]t- 

 iciii< (Journ. N. Y. Ent. Sue, xiv, 11)0, 1906j, but differ therefrom in the body 

 l>ile and tiie comb of the eighth segment, the scales of whicli are joined on 

 a basal plate. They occurred in a hollow tree at St. Anns, Trinidad. 



Specimens from Trinidad identified by ]\Ir. Coquillett as " Ilaniiafiogns 

 all.on,acii!aius Theobald " are apparently this species. 



Aedes philosophicus Dyar & Knab. 



This name (Journ. N. Y. Ent. Soc, xiv, 195, 1906) is based on larvae from 

 IMexico and Salvador, which were identified as adults as " Ilannagogus 

 equhnis Theobald." We refused to accept this name as we could not find 

 the description. It exists, nevertheless (Entomologist, xxxvi, 282, 1903) ; 

 but the circumstance proves fortunate, for the specimens were wrongly 

 named. A. jiliiloaopliicus has toothed claws in the female adult and ob- 

 viously belongs to Dr. Lutz's genus S(egoco7Wj)s, which we are unable to 

 recognize as distinct from Aedes. The species has faint silvery white bands 

 on all the abdominal segments above and thus superficially resembles 

 Haemagogus equinns Theobald, described from Jamaica ; but that has 

 simple claws in the female, as Theobald expressly states. 



Aedes affirmatus sp. nov. 



Shining blue, like Haemagogus sphndens Williston but the female with the 

 fore and middle tarsal claws toothed. Head and thorax clothed with metallic 

 blue scales, pleurae silvery w hite ; abdomen dark blue above, the first seg- 

 ment with a white bar on each side, below with silvery white segmental 

 bands. Legs blue-black, middle and hind femora with a silvery white spot 

 at tip, the middle femora narrowly white lined below, the posterior ones 

 very broadly so for the basal three-fourths. Base of first submedian cell 

 nearer ai)ex of wing than base of second posterior cell. 



Four specimens, Santa Lucrecia, State of Vera Cruz, and Salina Cruz, 

 State of Oaxaca, Mexico ; Las Loras, near Puntarenas, and Rio Aranjuez, 

 Puntarenas, Costa Rica (F. Knab). 



Tnjie.— Cat. No. 10,023, U. S. Nat. Mus. 



The larva is unknown. 



Aedes mediovittata Cu(jiuillett. 



Stegomi/iu iiicdioriilata Coquillett, Can. Ent., xxxviii, (50, 1900. 



Gymnomeiopa mediuvillata Coquillett, Proc. Ent. Soc. Wash., vii, 183, 1900. 



Aedes medloviltula Dyar i*c Knab, Journ. N. Y. Ent. Soc, xiv, 196, 1906. 



Gymnomeiopa mediuvitluia. Coquillett, Tecli. ser. 11, Dept. Agr., Bureau 

 Ent., 25, 1906. 



Mr. Coquillett specified this species as the type of his genus Gymnome- 

 l(>p<(, but later he defines the genus as having simple claws in the female, 

 and includes with mediovilktta, sexl'meala Theobald, albonotaia Coquillett 

 and husckii Coquillett, species actually with such claws. Mediovittata, how- 

 ever, has toothed claws, so that Gymnomeiopa will thus become a synonym 

 of Aedes, the other associated species falling into Haemagogus. 



