166 Dyar and Knah — Some American Mosquitoes. 



Ci. osivakU and G. fiuviotilis we can not detennine any positive statement 

 in Dr. Lntz's writinjrs on this point. Moreover, tlie description of osivaldl 

 reads so iiuu-li like our Aedes insolita Coquillett that we are in some doubt 

 if it is not actually that species. In this case it would be removed from 

 IlaeinaijoijMii, as insnlUn has toothed claws in the female. 



Key to the Species of Haemagogus. 



Tlinrax with narrow longitudinal white or 

 golden lines. 

 Two middle thoracic lines running back to 



scutellum ' s^V/nm/a Theobald 



Two middle thoracic lines running back two- 

 thirds, followed by a single line. 



Lateral thoracic line broad, silvery white . ^ walkeri Theobald 



Lateral thoracic line narrow, or broken, sil- 

 very. 

 IMedian posterior tlioracic line narrow, 



silvery ^ fliio?io/oto Coquillett 



Median posterior thoracic line broad, 

 diffusely golden or silvery, ending in a 



silver spot on scutellum * tuscAn Coquillett 



Thorax with a golden lateral line '^ aureostriata Grabham 



Thorax without narrow dorsal lines. 



Base of first suljniarginal cell nearer base of wing 

 than the base of the second posterior cell. 

 Thorax dorsally metallic blue or green. 

 Abdomen without spots dorsally .... splendens Williston 

 Abdomen with basal segmental silvery 



white spots regalis Dyar & Knab 



Tliorax dorsally black and white banded . . oswaldi Lutz 



Thorax dorsally golden before, dark behind fiuviatilis Lutz 



Thorax dorsally all golden fnlvilhorax Lutz 



Base of first submarginal cell nearerapexof wing 

 than base of second posterior cell. 



With large setae on third and fourth ab- 

 dominal segments; lasttwo segments with 



silvery white median patches alhoiiKtrulatusTheohaXd 



Without prominent setae ; fourth to seventh 

 segments with white basal bands .... eguinus Theobald 



Haemagogus splendens Williston. 



We i-estore Williston's name for the species identified as the cyaneus of 

 Fabricius by Mr. Theobald, as we think we have found a species that fits 

 better to Fabricius' desciiption than splendens does, namely Salethoides 

 confusus Theobald. 



1. From Trinidad. 2. From Jamaica. 3. From Santo Domingo. 4. From Dominica, 

 Martinicjue, and Guadeloupe. 



