4,0 -REV. A, E. EATON ON EECENT EPHEMEEID^ OR MAYFLIES. 



Eph(5in. 149, pi. xiii. 1-3 (1843-5) ; Walk., List of Nem-opt. lus. in Brit. Mus. part iii. 548 [excl. 

 exemplar] (1853). 



Campsurus albicans, Etn., Trans. Ent. Soc. London (1871), 58. 



Imago (dried), d . — Protborax yellowish, violet-grey at the sides of the notum; meso- 

 and metathoi-ax broAvn-ochreous. Abdomen pale yellowish or brown oclireous towards 

 its hinder extremity. Legs whitish, the fore femur and tibia violet-grey. Wings 

 whitish, tinged towards the base with violet-grey, the stronger nervures of this same 

 colour. Length of body 10, exp. of wings 30 mm. 



JIab. Brazil {Perch.}. The description is probably insufficient in the absence of 

 definite information of the precise locality where the type was captured. The details 

 figured by Pictet appear to have been drawn from the dried insect, and to be mis- 

 represented; Percheron's illustrations may have been delineated from an example in 

 spirits. The ? , doubtfully referred to this species by Walker (Brazil, J. P. G. Smith, in 

 Brit. Mus.), seems rather too small to be identical with it, but may possibly be 

 C. curtus, ? . It is well, however, not to attach much weight to mere possibilities in 

 matters of this nature. 



Campsueus cuspid attjs, Etn. Plate V. 8 d (forceps). 



Campsurus cuspidatus, ! Etn., Trans. Ent. Soc. Loudon (1871), 58, pi. iii. 12 [details]. 



Imago [dried], 6 . — Pronotum mouse-grey, tinged slightly with greenish. Abdomen 

 smoky-white above, yellowish- white beneath. Wings transparent, whitish throughout. 

 Length of body lO'u, wing 11 mm. 



Hab. Guatemala (Be Selys-Longchamps Mus.). This species is easily recognizable by 

 the cuspidate outline of the subgenital plate. 



Campstjiitis qtjadkidentatus, Etn. Plate V. 8 e (forceps). 



Campsurus quadridentatus, ! Etn., Trans. Ent. Soc. Loudon (1871), 58, pi. iii. 13 [details]. 



Imago {dried), 6 . — Tliorax and legs pale testaceous. Abdomen light yellow-ochreous, 

 sbaded with black-grey, especially posteriorly ; the foremost six segments traversed 

 lengthwise by a median black line. Wings dull translucent whitish ; subcosta and 

 radius of the fore wing black-gi'ey or sepia-grey. Length of body 12, wing 13 mm. 



Sab. Santarem, Brazil, June (Bates, in Dale Mus.). The subgenital plate of the 6 is 

 angularly excised behind on both sides of a large deep central su.bcircular sinus. The 

 name has reference to the tooth-like projections adjacent to the excisions. 



Campsurus cubtus. Hag. MS. Plate V. 8 f. 



Palingenia J albifilum, var. ! AValk., List of Neuropt. Ins. Brit. Mus. part iii. 554 (1853). — P. curta, 

 Hag. MS. (1861). 



Campsurus [B] curtus, ! Etn., Ent. Mo. Mag. v. 84 (1868). 



Asthenopus [type] curtus, ! Etn., Trans. Ent. Soc. Loudon (1871), 59, pis. i. 3, and iii. 14-14 b 



[details] . 



Imago (dried), d . — Pronotum piceous, the remainder of the notum (perhaps modified 

 by gum) luteous. Abdomen beneath and at the sides of the back light yellow-ochreous, 



