Genus Janthinosoma. 



153 



Head not honey yellow. 



Thorax with a broad yellow scaled area 



on each side lutzii. Theobald. 



Thorax with creamy lateral scales albipes. nov. nom. 



Thorax wholly yellow-scaled coquillettii. n. sp.* 



II. Last hind tarsal white. 



Thorax with scattered bronzy and yellow 



scales posticata. Wiedemann. 



III. Last hind tarsal dark. 



Fourth tarsal with a white basal band. 

 Thorax with median bronzy scales and 



orange-yellow lateral ones discrucians. Walker. 



Thorax yellow varipes. Coquillett. 



Coquillett has added a new species since the last volume, and 

 a new variety is described here. 



The male type of Walker's 

 discrucians has the last two hind 

 tarsi white, but in his description 

 he expressly states that there is 

 only a sub-apical pale band. 



The specimens identified by 

 me as discrucians from the 

 presumed type, and described in 

 Vol. III., p. 127, are evidently 

 not Walker's species, and I have 

 thus given it a new name — albipes. 

 Coquillett sinks it as a synonym 

 of lutzii, Theobald, but the two 

 are quite distinct. 



The latter observer has 

 created some confusion by sink- 

 ing Say's musica as a synonym of 



Wiedemann's posticata : the two are quite distinct. For posticata 

 of Wiedemann he proposed a new name, terminalis, Coquillett, 



Fig. 40 



End of ovum of Janthinosoma lutzii. 

 Theobald (after Goeldi). 



Fig. 41. 

 Ovum of Janthinosoma sayi. Theobald (after Goeldi). 



which must therefore sink as a synonym of posticata. Unfor- 

 tunately the name of the commonest species (musicus, Say) must 



* This will be described later. 



