86 - NOVITATES ZOOLOGICAE XXII. 1915. 



separate form might receive a varietal name. C. xolif/i of Butler wonkl be one of 

 these. The form from Fergnssoii Island is very distinct, so that I venture to give 

 it a name, and that from Bongainville Island is a very marked form with a very 

 distinct female, and shonld be named ; the others of this group have not come before 

 me in more than odd specimens, which it is nnsatisfactory to deal with, beyond 

 ]ilacing them as representing races of tkefi.^. 



In dealing with thetis I speak of "forms of thetis." In doing so it is 

 necessary to explain that I use the phrase in what may be called a new sense 

 in this connection, but in reality in its ordinary and proper acceptance. 



I begin by clearing the conception of flicfis of all the species that used to 

 be included in such a phrase as " forms oi thetis" but which are all very distinct 

 and definite species, such as pkaedrus, gloriosa, palawanica, etc., and include 

 only such forms as occur in various of the insular portions of its range, and as 

 to which questions may be raised both on the superficial appearance and on the 

 structure of the genitalia whether they are sirajily thetis, or are geographical races 

 deserving of a name, or even have diverged far enough to be established species. 

 barsirie is perhaps as good an example of such a " form of thetis " as can be 

 quoted, as it has for long had a recognised name. The Tring collection afFmds 

 several marked exam])les of such forms, and also others probably equally definite 

 were there more material. It is highly probable that no small proportion of 

 the Pacific islands, from Sumatra to the Solomon Islands or even farther, have 

 each a race of thetis, more or less possible to diiferentiate from others. I propose 

 to deal only with those that are adequately represented in the Tring collection. 



The males vary, especially in the width and proportions of the black border 

 and of the invasion of the copper by dark shading. The appendages difi'er in 

 the variations of the harpe elsewhere referred to. In the Solomon Islands, the 

 ? S have not white but brown (yellow ?) patches, yet these forms have the more 

 ordinary form of harpe. A Borneau form, on the other hand, has an extremely 

 condensed one. 



harsine Fclder, Silzungsher. Kals. Akad. Wish. Wien, xl. (ISGO) p. 451 ; id., Reise Nncara, Lep. 

 p. 220 (1865) tab. xxviii. fig. 10. 17 (Amboina). 



Has some claim to be regarded as a " good" species, but it may perhaps equally 

 justly be held to be a geographical race of thetis. 



The genitalia are almost identical with Indian thetis. 



The type and other Felderian specimens are in the Tring collection. 

 egeiia Felder, Reise Novara, Lep. p. 222 (1865) (no figure). 



The type specimen, a ? , of this species is in the Tring collection from Halma- 

 hera (Gilolo). There are identical specimens from Batchian (= Batjan) collected 

 by Doherty. One of these has a trace of white patches. These Batchian ? ? are 

 almost certainly those corresponding to some males with identical locality labels. 

 These males are very remarkable ; they are, both on the uj)per- and undersides, 

 very similar indeed to tagalica from Celebes. There are thus in Celebes and 

 Batchian, taken together (probably also in other Muluccan Islands) three very 

 distinct species of Curctis — viz. egena {thetis), taf/alica, and celehensis — that have, 

 in the males at least, a nearly identical facies which is not the usual one of tagalica, 

 (in other districts) or of thetis. 



I may say that till I examined the appendages of these insects, I was a 

 good deal puzzled by them, and was inclined to regard them all as celehensis, 



