5 



3 



4 



1 nubilus 0. S. 



2 innocens, n sp. 



, Four°basal joints of the antenna? pale. 3 nigripilus, n. sp. 



RHYPIIOLOPHUS. 1^1 



SO as to embrace all the Eriopterse the \Ying3 of which arc 

 pubescent on the whole surface. 



Tabic for determining the species. 

 fDiscal cell closed, or, if open, it coalesces with the second posterior 



J cell. " 



I Discal cell open ; it coalesces with the third posterior cell (Tab. I, 



L fig. 15). 

 „ ( Wings variegated with gray or brown 



\ Wings uniformly colored. 



( Wings clouded with gray. 



X Wings spotted with brown in all the cells 



( Four basal joints of the antennse pale. ^ ^^^^^^t^..^.^, ... .^^- 



^ i Antennae altogether blackish. 4 holotrichus, 0. S 



i Thorax reddish, with a distinct black line in the middle. 

 .} .5 rubellus, n. sp. 



I Thorax gray, without any distinct stripe. 



rKnobof the halteres yellow; wings with a conspicuous stigmatical 

 I gp^^_ 6 meigenii 0. S. 



^ I Knob of the halteres infuscated ; stigmatical spot not conspicuous. 

 t 7 monticola, n sp. 



Description of the species. 

 1. R. nuljilUS 0. S. % and J .— Cinerens, vitta thoracis distiucta, 

 'fusc'a ; alls griseo nebulosis, cellula discoidali clausa ; venis longitudi- 

 nalibus sixta et septima versus apicem subparallelis. 

 Gray, thorax with a distinct brown stripe ; wing clouded with grayish ; 

 dis'cal cell closed; sixth and seventh longitudinal veins subpavallel 

 towards the tip. Long. corp. 0.23—0.27. 

 Syn. Erioptera nuhila 0. Sacken, Proc. Ac. Nat. Sc. Phil. 1859, p. 227. 



Brownish-gray ; a distinct, narrow brown stripe over the tho- 

 rax ; thorax sparsely, abdomen densely clothed with rather long, 

 soft, pale yellowish hairs ; antenna brownish-black, paler at the 

 basis of the flagellum, with short verticils ; palpi black ; halteres 

 pale, slightly infuscated at the base of the knob, the tip of which 

 is clothed with a short golden-yellow pubescence ; feet brownish, 

 coxi^ and basis of the femora paler ; knees pale ; femora with an 

 indistinct brownish band before the tip ; wings (Tab. I, fig. U) 

 grayish-white, with gray nebulosities ; they form two more or less 

 marked bands across the apical portion of the wings ; a third 

 band passes over the cross- veins; a cloud in the first basal cell ; 

 another in the axillary, and some nebulosities in the spurious 



