198 Mr. F. Walker's Characters of undescribed Neuroptera 



Fam. PSOCID^. 

 Genus Psocus, Fabr. 

 Psociis reponens. 

 Niger, niteus, capita testaceo, antennis sub-pubescentibus cor- 

 pore longioribus, thoiace vittis duabus testaceis, pedibus 

 piceis, femoribus fulvis, alis anticis fasciis quatuor fuscis, 



3a antice furcata. 

 « 

 Black, shining : head testaceous; antennae minutely pubescent, 



longer than the body ; thorax with two testaceous stripes ; legs 

 piceous ; femora mostly tawny; wings vitreous; veins white; fore- 

 wings with four dark brown bands ; the first united to the second, 

 and the third to the fourth, by the hind border; the third forked 

 towards the costa. 



Length of the body 2 lines ; of the wings G lines. 



South America. 



Fam. EPHEiMERID^. 



Genus Ephemera, Lin. 



Ephemera d'lslocans. 



Picea, subtus ferruginea, thoracis pectorisque lateribus abdo- 



minisque apice testaceo-notatis, setis corpore longioribus, 



pedibus nigris, femoribus ferrugineo-fasciatis, alis anticis 



vitreis nigro transverse strigatis. 



Eiceous, ferruginous beneath : sides of the thorax and of the 



pectus and tip of the abdomen with some testaceous marks ; setae 



much longer than the body ; legs black ; femora with ferruginous 



bands; wings quite vitreous; fore-wings with regular transverse 



black marks along the costa, and with irregular transverse black 



streaks in the disk ; transverse veins rather few, mostly clouded 



with black. 



Length of the body 4 lines ; of the wings S lines. 

 Cape of Good Hope. 



Genus Potamanthus, Pictet. 

 Potamanthus exspectans, 



Testaceus, thorace vittis duabus abbreviatis nigris, abdomine 

 lineis quatuor nigris, setis pubescentibus corpore vix brevio- 

 ribus, alis testaceis, venulis transversis nigris. 



Pseudmago. — Testaceous : thorax on each side with a black 

 stripe, which is abbreviated hindvvard ; abdomen with four black 



