EE\^ A. E. EATON ON EECEXT EPHEMEEID^ OE MAYFLIES. 197 



in the marginal area, which are more or less whitish ; hefore the bulla are 6 or 7 rudi- 

 mentary cross veinlets, beyond it about 7 rudimentary and 7 Avell-defined simple and 

 almost straight cross veinlets : the intercalary veinlets of the terminal margin are mostly 

 single. Legs, in opaque view, somewhat of a dull light Vandyke -brownish grey, stippled 

 or irrorated minutely and densely in the femora with very light burnl-umber brown ; 

 tarsal joinings also of this latter colour ; terminal tarsal joints darkened; ungues black. 

 Body discoloui'ed ; notum testaceous, irrorated on each side with brown-ochre, and 

 traversed lengthwise by a median brown-ochreous sti'ipe intersected by a light yellowish 

 line. Sette white, with the joinings and basal joints lutescent. Length of body, 2 6; 

 wing 8 mm. 



Hah. Central America ; Aceytuno (5100 ft.) [in M°Lach. Mus.). 



Callib^tis fasciatus, Pictet. 



Cloe fasciata, Pict., Hist. Nat. Nuvropt. ii. Epliem. .202, pi. xli. 4 (184.3-5) [wbole figure].— C. 

 Lorentzii, Weyenh., Tijdscb. v. Eut. 1882-3, p. 167, pi. x. 4 (1883) [wings]. 

 Cloeon fasciata, AV^alk., List of Neuropt. lus. iu Brit. Mus. part iii. 575 (1853). 

 Ba'etis fasciatus, Etn., Trans. Eut. Soc, London (1871) 123. 



Subimago {dried), d . — Wings transparent, very light brownish- or fawn-grey, striped 

 and spotted with light brown : fore Aving mottled along the costal border, and traversed 

 obliquely, from the costa in the neighbourhood of the bulla to the anal curve of the 

 inner-terminal margin, by a fascia somewhat irregular in outline, but broadest and sub- 

 angulated near the costa ; between this fascia and the wing-roots are two large spots 

 extending at least from the costa to the prsebrachial (6) nervure, and in the disk, midway 

 towards the wing-roots, a small spot contiguous with, or intersected by, the long inter- 

 calar nervure that follows the anal (8) nervure : along the costa beyond the fascia are a 

 large fiexuous spot, followed by a smaller straighter spot, and several other small ones, 

 all of irregular form and apt to be more or less continent Avith one another ; and near 

 the terminal margin an irregularly broken fascia exteods from just below the tip of the 

 wing almost as far backwards as the termination of the first-mentioned fascia. The 

 markings are dark-edged throughout the wing, and in the marginal area are broken up 

 by clear spaces bordering the cross veinlets. Legs pale dull brownish-lutescent ; the 

 fore tarsus, and the joinings and extremities of the hinder tarsi fuscous. Setae light 

 sepia-grey, with reddish joinings. Thorax light dull brownish-lutescent. Abdomen 

 faded, dark above, jialer beneath ; each of the first six ventral segments is marked with 

 a pair of abbreviated, longitudinal, linear, black dashes, each followed by a black dot, 

 and also with a reddish spot at the middle of the terminal margin. [After Pictet, and a 

 d subim. in Hag. Mus.] 



Imago {lirbig). — 6 . Upper i:)ortion of eyes dark reddish brown. Thorax and legs grey ; 

 he former somewhat darker above, and more yellowish in colour at the sides. Abdomen 

 ibove reddish brown, sometimes nearly blood-red, or suff"used Avith dark brown on the 

 )ack, with very dark tips to the segments ; venter similar in colour to the sides of the 

 horax. Setae translucent, with darker joinings, especially towards the roots ; the joints 

 horter than in Q. Sellacki. Wing-markings somewhat darker in tint than those of that 



