HYDROPSYCHID.E. CYRNUS, 175 



longer one in the middle ; intermediate and posterior each with two pair, 

 one pair at the apex, the other pair in the former towards the base, and in 

 the latter below the middle. 



From the foregoing genera this may be known by the anterior 

 tibiae being furnished with three spurs, two at the apex, and one in 

 the middle, and from the following, which agrees in that particular, 

 by the different neuration of the wings : these last organs are gene- 

 rally of plain hue, and have mostly a transparent spot on the disc : 

 the antennae are shorter than the wings,which are rounded at the apex, 



Sp. 1. unipunctatus. Nigricans, antennis fedibusque fulvis, alis fuscescentibus, 

 nervis saturatioribus, anticis viaculu albo-hyalina. (Long. corp. 21 — 3 lin. ; 

 Exp. Alar. 2^—3 lin.) 



Tin. unipunctatus. Steph. Calal. 316. No. 3571. 



Blackish : head brown ; margins of abdominal segments beneath pale ochreous; 

 legs and antenn£E tawny, the latter faintly annulated with Itrown ; wings 

 brownish, with an ochreous tinge, the nervures fuscous ; anterior with a 

 white hyaline spot at the apex of the inner discoidal areolet ; posterior 

 wings more transparent, and slightly iridescent. 



Not common : taken in June and July, at Hertford, Ripley, and 

 in other places, within the metropolitan district. 



Sp. 2. pulchellus. Fuscus, pedibus fulvis, antennis ochraceis, brunneo annulatis, 

 alis ochraceo-fuscis, aniicis ad apicem, pallide luteo irroratis, punctoque dis- 

 coidali albido. (Long. corp. 3 lin. ; Exp. Alar. 6 — 7 lin.) 



N. G. (553). pulchellus. Steph. Catal. 317. No. 3589. 



Fuscous : apex of the abdomen, palpi, and legs tawny ; antennse ochreous, 

 annulated with brown ; anterior wings ochreous-brown, prettily freckled 

 with pale luteous, especially at the apex, with a whitish hyaline dot at the 

 tip of the inner discoidal areolet, the nervures dark fuscous ; posterior 

 wings darker fuscous, iridescent and immaculate. 



This also occurs in various places within the metropolitan district, 

 in June and July, and likewise in the New Forest and in Devon- 

 shire. 



Sp. 3. urbanus. Gracilis, ochraceus, capite thoraceque supra brunneis, alis 



angustis, immaculatis, antennis brunneo annulatis, palpis nigricantibus. 



(Long. corp. 2^ lin.; Exp, Alar. 5^ — 6 lin.) 

 Hyd. urbana. Pictet, p. 213. pi. xix. /. 13. — Cyr. cognatus. Steph. Nomen. 



^d edit. col. 119. 

 Very slender: head and thorax light ochreous, brown above; eyes and palpi 



blackish; antennae ochreous, annulated with brown; anterior wings narrow. 



