62 TERACOLUS. 



almost obsolete, but terminating in a large spot above the tirst median nervule. 

 Secondaries pale yellow, tlie nervules terminating on the hind-margin in brownish 

 spots. 



U)i(JersicJe. — Primaries similar to those of T. difficilix, the post-median row of 

 brownish spots somewhat more strongly indicated. Secondaries entirely sandy pink, 

 but with no vermiculations, the discal transverse rufous band strongly marked and 

 curving round and following the outline of the wing as far as the sub-median 

 nervure. 



Expanse 1*7 inch. [Spec. Ii/p. ex. Whiie Nile ; Godman-iiahin Coll.; Mus. Brit.) 



Habitat. — Abyssinia (Ferret and Galinier, Voy. Abyss., pi. xxx. Figs. 3, 4, 1849). 

 White Nile {Consid Pethcrick ; J///.y. Beit.). Somali Land. — Sheik Husein, Sept. 26 

 {Br. Bo)ial(hoH Swil/i ; E. M. Sharpe, P. Z. S. 1896, p. 535). 



T. ])hh\(/i/as is, in my opinion, the type of a separate group of purple-tipped 

 Teracoli. in which the black vein-lines are more or less obsolete. To this group 

 belong 'J\ phle/iym, T. bn.rto/ii and 7! iotie, which present an almost uniform white 

 upper surface in the males, and have the females much less heavily marked, as can be 

 seen from the figures in the jjlates. 



With regard to the plate of T. io/ie in Ferret and Galinier's " Voyage en Abyssinie," 

 I consider that Figs. 3 and 4 can be referred to T. phlegyas, while the other figures 

 represent T. iiiijjerator. 



Of the forms recognised by me in the present " Monograph," which is avowedly 

 founded on Dr. Butler's arrangement of the genus Teracolm in the British ]\Iuseum, 

 the following, admitted by Dr. Butler as distinct, are merged by Mr. Guy IMarshall 

 under T. phh'i/ijas — viz. Teracolns buxtoni, T. imperator, and T. bacclius. 



I reproduce Mr. Guy Marshall's remarks on 7! jMeyyas and its allies: "The 

 male type of this highly variable species is a dwarfed specimen from the White Nile, 

 and its most distinctive character is that the underside of the hind wings is white, 

 with all the neuration finely blackened throughout. From Wadelai and Njemps I 

 have seen very similarly marked specimens, which are, however, of much larger size, 

 being quite equal to the T. imperator form. 



" The only important diflerence between these examples and '/'. txicchns, Butler, 

 which is recorded from Wadelai, Kandera, and the Sabaki Valley, is that the latter 

 has the underside neuration very heavily blackened, which certainly gives it a ver}' 

 di.stinct appearance ; but the development of the black neuration is such an eminently 

 unreliable character in this genus that I cannot consider it a good species. 

 T. mrofjoroana from ' Zanguebar ' is identical with T. bacchns, the difl'erences referred to 

 by M. Vuillot appearing to me to be absolutely trivial. T. phkyyas also varies in the 

 opposite direction, namely, in the gradual loss of the black neuration below until the 



