CLASSIFICATION OF THE AS CAL APHIDES. 



249 



Like the last, this species approaches Cordulecerus in its wing- 

 formation. I have examined about half a dozen individuals, 

 which differ only in the presence or absence of tinting of the 

 wings. 



12. U. aurifera, nov. sp. Antennae nigrae, ad basin flavidae; clava 

 subtus vix flavescente. Caput thoraxque dense aureo griseoque vil- 

 losus. Pedes flavi, griseo nigroque hirsuti ; femoribus tibiisque inter- 

 mediis et posticis fuscescenti-cingulatis. Abdomen flavum, supra 

 utrinque interrupte nigro bivittatum. Alae angustatae ; pterostigmate 

 flavo : anticas vitreae ; humeris flavis ; venis venulisque plerumque 

 fuscis; subcosta flava, nigro-striata, cubito inferiore, cum ramulo 

 transverso, flavis : posticae anticis angustiores, vitreae, aureo-suffusae ; 

 cubito inferiore postcostaque flavidis. Long. corp. 12"'; exp. alar, 

 antic. 28"', postic. 26'". 



Hab. Santarem (Bates). In the British and Oxford Museums. 



A pretty species, remarkable for its long and narrow wings, 

 and the delicate golden suffusion, which shows a tendency to in- 

 vade both pairs, but is most evident on the posterior. 



Genus Colobopterus, Bambur. 

 (Suphalasca, part., Lefebv.) 



Wings long and narrow ; the extreme base of the inner margin 

 of the anterior pair with an excision, but not appendiculate ; 

 posterior pair ordinarily with a deep excision before the base 

 of the inner margin, and then a dilatation, but varying much 

 in form : network moderately open ; no oblique branch of the 

 lower cubitus in the posterior wings, the postcosta being 

 long and sinuous ; pterostigma small. 



Antenna as long as, or longer than, the wings, more or less pro- 

 vided with verticillate hairs in the basal portion ; club long 

 and slender. 



Eyes with the divisions equal. 



Thorax villose, especially on the breast. 



Abdomen rather short, slender in the <5 and without appendices ; 



more robust in the £ . 

 Legs long and slender ; spurs of the posterior tibia? as long as, 



or longer than, the first four tarsal joints. 

 Hab. South America. 



