4 INSECTA SAUNDERSIANA. 



broader and paler than the first or the second ; wing-ribs tawny ; veins 

 black, tawny along the fore border ; tip cross-vein with two very slight 

 curves, the first upward, the second downward ; poisers pitchy, with yellow 

 knobs. Length of the body 3 lines ; of the wings 4i lines. 



DIALYSIS, n. g. 



First and second joints of the feelers short ; second a little shorter 

 than the first ; third conical, not longer than the second ; fourth like a 

 bristle, downy, much longer than all the three preceding. 



Dialysis dissimilis. Fern. (Xylophagus Americanus? Cat. Dipt. 

 B. M. 128.) 



Fulvus, capite albo micante, ihorace fusco trivittato, ahdominis maculis 

 trigunis apiceqtie piceis, antennis fuscis hasi fulvis, pedibus fulvis, 

 tarsis piceis, alis suhfuscis. 



Body tawny, clothed with short tawny hairs ; head adorned with 

 white lustre : eyes red, parted above by a very narrow interval : sucker and 

 palpi dark tawny : feelers brown ; first and second joints tawny : chest 

 adorned mth three brown stripes, its sides in front and the breast whitish : 

 abdomen more than twice the length of the chest, tapering to the tip ; 

 each segment adorned with a pitchy, nearly triangular band ; the latter 

 segments all pitchy : legs pale tawny ; feet pitchy ; claws black : wings 

 pale brown, with a slight tawny tinge, darker along the veins ; wing-ribs 

 tawny ; veins brown, tawny towards the base ; poisers tawny. Length of 

 the body 4 lines ; of the wings 7 lines. 



CYCLOTELUS, n. g. 



First joint of the feelers very long ; second very short ; third and 

 following forming a compound joint, which is as long as the first and com- 

 pressed at the tip : tip of the abdomen of the female armed as in the 

 Asilici with a circlet of si)ines. 



Cyclotelus nigeoflamma, Fem. 



Niger, capite cano, thorace cinereo-fulvo jnibescente, abdornine argenteo 

 unifasciato apice ferrugineo, antennis ferrugineis, pedibus piceis,- 

 tibiis anterioribus tarsisque posterioribus fulvis, alis limpidis antice 

 fulvis posticc cincrcis nigro-unifasciatis. 



Body black : head hoary and beset with black bristles behind, clothed 

 with black hairs beneath: eyes pitchy, fore part rather fiat, its facets a 



