156 MESSRS. H. J. ELWES AND JAMES EDWARDS: 



40 (39). Hind wing below without an irrregular continuous pale 



terminal band. 



41 (48). Apex of tegumen undivided. 



42 (47). Tegumen without lateral horns. 



43 (46) . Apical lobe of clasp much expanded, broadly and evenly rounded 



in a semicircle. 



44 (45) . Fore wing below greenish grey-brown ; hind wing below with a 



pale dot normally present in cell 6 1 serratulce, Rbr. 



45 (44). Fore wing below blackish brown; hind wing below normally 



without a pale dot in cell 6 2 speyeri, Stgr. 



46 (43). Apical lobe of clasp not expanded in a semicircle 1 alveus, Hiibn. 



47 (42) . Tegumen with a horn on each side, tip compressed. Clasp of 



the same type as zona malvoides, n. sp. 



48(41). Apex of tegumen bipartite . malvce, Linn. 



49 (38) . Markings of hind wing below obsolescent by reason of general 



paleness. Tegumen with a branched horn on each side . melotis, Dup. 



50 (37). Hind wing below with the pale spot on the transverse vein 



produced inwardly towards the origin of vein 7. 3 



51 (54). Hind wing below with a pale dash in cell 1 b near the base. 



52 (53). Fore wing above with a straight oblique pale macular band 



from the costa beyond the middle to the dorsum before the 



middle andromedce, Wlgrn. 



53 (52). No such band on fore wing above i cacali<e, Rbr. 



54 (51). Hind wing below with the pale basal marking in cell 16a spot, 



not a dash. 



55 (56) . Hind wing below pale sordid yellowish- or russet-green . . . onopordi, Rbr. 



56 (55). Hind wing below dark (usually blackish) green centaurem, Rbr. 



57 (2). Hind wing below with the pale median band sharply defined, 



narrow, non-macular, and preceded by abroad irregular brown 

 band, which bears a small pale spot near the basal third of 

 cell 7 ; or if macular, then not interrupted, and preceded by 

 a dark Y-shaped marking reaching quite across the wing and 

 followed by a dark subterminal band. 



58 (61). Hind wing below with the pale median baud preceded by a 



large dark Y _sna P e< i marking reaching quite across the wing 

 and followed by a dark subterminal band. 



59 (60). No dark terminal band on hind wing below bieti, Ob. 



1 We cannot distinguish with, certainty between sermtulce and alveus, except by the male genitalia. If 

 we make the presence or absence of pale markings on the hind wing above the basis of separation, we find 

 that this character varies too much to be reliable ; if, on the other hand, we use the male genitalia, we get two 

 forms which do not intergrade. The male genitalia can always be referred with certainty to their respective 

 types, although both kinds are known to occur in the same locality, as at Vernet and Mont Cenis. 



2 Very near the preceding, and probably not distinct. 



3 Vide note to paragraph 37. 



4 This insect has the same type of clasp form as andromedce. 



