EEV. A. E. EATON OX EECENT EPHE:\IEEIDJJ OE MAYFLIES. 261 



in tlie marginal and submargiual areas ; costa, subcosta, aud radius piceous ; the re- 

 maining neuration either pitch-black or black Length of body or wing 14- ; setae, j im. 

 about 28, subim. about 16 mm. 

 Sab. The Ehine, near Laiiflenburg (Berne Mus.). 



P^GNIODES, Etn. 1881. 



Illustrations. Adult (details), Pis. XXIII. & XXIV. 41. 



Adnlt. — First joint of the hind tarsus shorter than the second, which equals the third 

 joint in length ; the corresponding joints of the intermediate tarsus similarly propor- 

 tioned ; first joint of the 2 fore tarsus much (about ^) shorter than the second, and this 

 rather longer than the third joint ; ungues mutually dissimilar. Penis-lobes rather 

 narrow and subcylindrical, with suddenly enlarged patulous tips, in the typical species. 

 — Fore leg of d defective in the specimens examined ; but the first tarsal joint is 

 shorter than the second. Fore tarsus of ? about f the length of the tibia, and this 

 about as long as the femur; the tarsal joints in the order of their shortening rank 

 2, 3, 5, 1, i, aud the first is nearly ^ as long as the second. Hind tarsus of $ nearly 

 y the length of the tibia, aud this about f as long as the femur ; its joints in the order of 

 their shortening rank 3 subequal to 5, 2, 1, 4. Ungues each unlike the other in every 

 tarsus. Hind wings of usual form ; the axillar region narrow. Penis-lobes at the base 

 subcylindrical, but distally enlarged suddenly to a moderate extent in the typical 

 species ; the seminal ducts apparently open into the capacious cavities of the hollow 

 lobes ; inferior stimuli well developed. Forceps basis saliently curved to a moderate 

 extent in the middle behind. Ventral lobe of the ninth $ abdominal segment entire. 

 Outer caudal setre in both the sexes about thrice the length of the bodv. 



O ft 



Ti/2>e. P. ciipuhdiis (in Heptageiiia), Etn. 

 Distribution. China and Tibet. 

 Etymology. Trai'/viwhnc, sportive. 



P^GXiODES CUPTTXATUS, Etn. Plate XXIII. 41 (part of fore wing, hind wing), XXIV. 



41 (legs $ & J genitalia). 



Heptagenia ciipulata, ! Etn., Trans. Ent. Soc. London (1871) 138, pi. vi. 1-1, 1-la [detail] ; Palmen, 

 Paar. Ausf.-Gange d. Geschl. Org. b. Insect. S. 74 [anatom.] (1884). 



Pagniocles [type] aqndatus, ! Etn., Ent. Mo. Mag. xviii, 23 (1881). 



Snhimacjo [dried). — Wings light raw-umber grey, the bind wings very narrowly edged 

 with black-grey along the terminal margin ; longitudinal neuration raw-umber brown ; 

 cross veinlets mostly pitch-brown or pitch-black. 



Imago [dried], d . — Thorax deep brown-ochreous above, the pronotum with a double 

 black spot in the middle, the metapleura with a descending brown-pm"ple stripe. 

 Abdomen light brown-ochreous above, with a median longitudinal streak, the apical 

 borders of the secrments, and in each of the scsmenls 2-8 on each side, with a broad 



SECOND SERIES. — ZOOLOGY, YOL. III. 35 



