94 xi \\ Y.I:K STATE MISKTM 



<l't Thorax without a lon-itudinal fissure 



flaws cleft ; antennae seven- jointed in male and female; lial 



tens lun- (Alaska and Oregon) '_". T . 1 in a t o g e t o n 



Claws in.1 cleft 



f Antennae with thirteen to tifteen joints 



\ntennae with fifteen joints; win-s spotted (West Indies 



and Mexico) 5. Oecacta 



gO Antennae with fourteen or fewer joints 



// Thorax rounded, not produced over Hie head; antennae 

 with tliirtecn or fourteen joints; le-s of moderate 

 length 



i Antennae with thirteen joints; win;: as li-ured, pi. 35, 

 tig. H>. Palpi with three joints. (=L e p t o co n o p s 



SkuseV) 2. Terse stbes 



\nteiinae with fourteen joints; win- venation as fi-ured, 

 pl.17. li-s. i:i to if,, i Co hack to the Croup Ccrut- 

 n ]i i, ;/ o n liti on p.'.i'j ,,r di,. previous key. i 



ffd-ltlt Thorax pi-odnced over the head, legs u-ually long; 

 antennae of male with the fourteenth joint Ion.-, slen- 

 der, and plum"-.,, i female with seven joints. < < ;., 

 back to -roup OhironomuS Him. p.'.M of previous 

 key. > 



The subdivision of the (li-otip ( ' r ;M < p o g o n into smaller 

 .ucncra ;iiid suho-riiiT;! ;i> ui\rn in the lirst k<>y is adapt CM! from 

 one given by tin- Abbe J. -T. Kk'llVr ilDO-i, \vith some slight 

 modifications. The three South American genera Psycho- 

 p li a e u a , T e t r a p h o r a , and Didymorphleps, have 

 been omitted from the key. They are jtrobably synonymous with 

 previously described genera, though from the brief descriptions 

 it is impossible to say. They all belong to the Group C e r a t o p - 

 ogon, and their descriptions are all reproduced upon a subse- 

 quent page. 



Genus 1. Leptoconops Skuse 



Proc. Linn. Soc. N. S. W. 288. 1889. (P1.35, fig.14) 

 Antennae in female 2+11 jointed; first joint of scapus large, 

 disciform; second smaller, globose; llajiellar joints globose, 

 gradually diminishing in size, more ovate towards apex, terminal 

 joint elongate-ovate. Proboscis prominent. Palpi four-jointed; 

 first and second joints small, third greatly incrassated, about 

 three times the length of the first or second; fourth not as long 

 as last, slender cylindrical; wings naked. All longitudinal veins 

 taking their origin at the base of the wing. Venation as figured. 

 Australian species. 



