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Show 1894.] FROM BRITISH EAST AFRICA. 559 5. MYCALESIS (MONOTRICHTIS) EUSIRUS. Mycalesis eusirus, Hopffer, Ber. Verh. Ak. Berl. 1855, p. 641. n. 13. Ngatana, December and January; shores of Lake Dumi, 13th February; Njempo; steppes of Thika-Shika on grassy plateau west of the Lower Falls, 16th July. 6. ENOTESIA, sp. One poor example of a species near to E. ankoma (Mycalesis ankoma, Mabille) ; the primaries, however, are a little less angular than in that species, and the outer edge of the dark central belt is zigzag throughout. Ndoro; steppes at base of Kenya, 7000 feet. NEOCCENYRA, Butl. The present collection proves that this genus must be much more extensive than I had supposed. In the first place, there are sexes of my N. duplex agreeing very closely in pattern, the female being entirely without the red markings of my supposed female from Somali, thus proving that the latter is a distinct species (for which, therefore, I propose the name of N. rufilineata). Secondly, there is a species allied to N. duplex and JST. ypthimoides, but nearer to the former. Neoccenyra, at first sight, would appear to be scarcely distinct from Strabena, Mab., if we were to accept that author's decision as regards the type of his genus. Although in 1877 M. Mabille had already described a single species under the generic name Strabena (S. smithii, Pet. Nouv. p. 157), he stated in M. Grandidier's ' Hist, de Madagascar' that Satyrus tamatavce, Boisd., was the type of his new genus. If this loose treatment of the types of genera is permitted, it will necessitate alteration of the names of scores of well-known groups, the types of which have been figured or referred to by both Hiibner and Felder, without any definite statement that the species thus indicated are the types of their genera. The only safeguard is strictly to follow the method adopted by Scudder, accepting the author's first mention of his genus, as then used, and ignoring all his subsequent decisions : the first species recorded under a new generic name, if unaccompanied by other species, or any statement as to the type of the said genus, thus becomes, and must for ever after remain, the typical species. The genus Strabena, as represented in the ' Histoire de Madagascar,' contained heterogeneous material, and the so-called type differs in no structural character from one of the species placed by the same author under Pseudonympha : thus M . Mabille says that the latter genus is characterized by its long antennae, the club of which is distinct, oboval, and laterally compressed; but his P. goudotii has the club cylindrical and with a longitudinal groove below, as in S. rakoto, vinsonii, ibitina, tamatavce, &c.; it also |
