EEV. A. E. EATOX OX EECEXT EPHEilEEIDJ: OR MAYFLIES. 39 



Campsurus latipekxis, Walk. Plate V. 8 c (wiugs & forceps). 



PaUngenia latipennisl "Walk., List of Neuropt. Inst, in Brit. Mus. part iii. 554 [escl. var.] (1853). 

 Campsurns [type] latipennis ! Etn., Ent. Mo. -Mag. v. 83 (1868) ; id.. Trans. Ent. Soc. London (1871), 

 57, pis. i. 4, & iii. 10, 10 a [details]. 



Imago {dried), s . — Thorax fusco-luteous (eaten out by Psocidce) ; abdomen above very 

 light Timber-grey, more distinctly so in segments 4r-10 than in the others, with the 

 joinings of the segments and the line of the dorsal vessel darker ; venter testaceous ; setae 

 pellucid white. Fore legs sepia-brown, with white ungues. In the fore wing the costa, 

 subcosta, and radius, from the wing-roots to a little beyond the middle, are warm sepia- 

 grey ; the adjacent part of the marginal area is tinged -n-ith the same colour, or 

 fuscescent. 



Subimago. — Body very light brown-ochreous, with the setae white or yellowish white. 



2 . Pronotum bistre-grey ; mesonotum brown-ochreous. Abdomen discoloured (largely 

 denuded by Psocidce) very light brown-ochreous beneath ; dorsttm carinated lengthwise 

 and perhaps bistre-grey in segments 2-9. About nineteen Hue, simple, almost straight 

 cross veinlets in the marginal area of the fore wing. Length of body, 6 S , 7 ; wings 8 ; 

 setse, 6 im. 22, subim. 15 mm. 



Sab. Para; Toncantine (Wallace in Brit. Mits.) ; Santarem (Bates in M'Lach. 

 Mus.). 



CAMPsmrs ALBLFiLrM. Walk. Plate Y. 8 a (adult 6 , head, wing, forceps, fore leg : 

 subim. c? , fore leg). 

 PaUngenia albifilum ! Walk., List of Xeuropt. Inst, in Brit. Mus. part iii. 554 [excl. rar.] (1853). 

 Campsurus albifilum ! Etu., Trans. Ent. Soc. London (1871), 57, pi. iii. 11 [details]. 



Imago (dried), 6 . — Pronotum very nearly light bistre-brown ; mesonotum in the type 

 discoloured by gum. Abdomen l)eneath light Boman-ochraceous ; dorsum lighter, 

 marked in segments 1-6 with light grey, but in segments 7-10 with light bistre-brown ; 

 the markings are : — in segment 1 a spot on each side ; in segments 2 & 3 a streak from 

 the base on each side of the middle curved outwards near the hind margin ; in segments 

 4-7 two marks, one on each side of the middle line resembling square vincula ] [ placed 

 back to back, whose extremities in the hinder segments tend to be conjoined by a narrow 

 baud of the same colour ; in segments 8 et 9 a large oblong blotch on each side of the 

 pale median dorsal line ; segment 10 is light brown-ochreous with a small spot on each 

 side. Setae white, faintly tinged at the base with pale ochreous. Forceps and penis pale 

 yellowish. Coxae testaceous ; fore femur and tibia deep sepia-brown, the tarsus and 

 ungues light sepia-grey. Costa, subcosta, and radius of the fore wing light brown- 

 ochreotts at the wing-roots, and then light sepia-grey. Length of body, d , 12 ; wing 13 ; 

 setae 10 mm. 



Sab. Para (Brit. Mus.). 



CAiiPsmrs ALBICANS, Perch. 



Ephemera albicaiu^, Perch., in Guer. & Peich. Gen. d. Ins. &c. li^T. \i. pi. iv. 1 (1838). 



PaUngenia albicans, Bui-m., Haudb. d. Ent. Bd. ii. Abth. ii. 803 (1839) ; Pict., Hist. Nat. NevTopt. ii. 



