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 43 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. 
Diatysis pissimi1is, Fem. (Xylophagus Americanus? Cat, Dipt. 
B. M., 128.) 
Fulvus, capite albo micante, thorace fusco trivittato, abdominis maculis 
trigonis apiceque piceis, antennis fuscis basi fulvis, pedibus fulvis, 
tarsis piceis, alis subfuscis. 
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 with 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 hase; 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 spines. 
CycLoreLus NiarornamMa, Fem. 
Niger, capite cano, thorace cinereo-fulvo pubescente, abdomine argenteo 
unifasciato apice ferrugineo, antennis ferrugineis, pedibus piceis, 
tibiis anlerioribus tarsisque posterioribus fulvis, alis limpidis antice 
Sulvis postice cincreis nigro-unifascialis. 
Body black: head hoary and beset with black bristles behind, clothed 
with black hairs beneath: eyes pitchy, fore part rather flat, its facets a 
