91 
Dr. T, A. Chapman on Calloplir.ys avis. 
My interest at the time in Callophrys rnti was stimu¬ 
lated by Mr. Tutt’s impending treatment of that insect in 
his “ British Butterflies,” in connection with Avhich he 
expected me to supply him with various important 
observations. Possibly without this stimulus the specimen 
of C. avis would not have been taken. It puzzled me very 
much ; I hardly thought it could be a distinct species, but 
there were almost greater difficulties in supposing it to be 
a hybrid with some other Theda or an aberration of C. rnhi. 
The specimen is noted in Tutt’s “ British Butterflies ” 
(vol. ix, p. 90) under the head of C. rnhi, C vav. fervicla. 
“ A very remarkable example of this form, taken by Cliapraan at 
Hyhres in April 1906, is very large, 36 mm. ; has a very narrow and 
yet almost continuous white line on the undenside of the wings ; 
has the underside of the antennal club largely red, a character that 
appears to be very rare, judged by our long series, and we believe 
not before noticed by any lepidopterist.” 
The colour of the upper surface would lead to its being 
placed with G. onihi var. fervida, but no notices of fervida 
I have come across report specimens possessing the 
peculiar characters of C. avis, and the localisation of C. avis 
and its rarity even where it occurs make it unlikely that 
many specimens exist unrecogni.sed in collections. Even 
in his great collection, where one would expect to find it, 
if anywhere. Mods. C. Obertbiir tells me that he cannot 
detect one. 
Rambur’s note on Theda ridn in his “ Catalogue of the 
Lepidoptera of Andalusia” leaves on my mind little doubt 
that some, at least, of his specimens were C. avis. He 
says the specimens are distinguished “ by the ochreous of 
the upper wings and by the continuity of the white line 
beneath the lower; the last joint of the palpi is also 
shorter.” The last item at least is definite, and it is the 
case that this last joint is shorter in C. avis than in C. rnhi 
(see ante and Plate XXI). 
Staudinger’s var. suaveola of 0. rnhi agrees with 
C. avis in its large size and in the want of tails. In all 
other respects it agrees with C. rnhi. I have examined 
two specimens at the Brit. Mu.s., South Kensington, from 
Artrabad and Shahkuh, and one from M. Oberthiir’s col¬ 
lection, from Syria. 
The last palpal joint is more like that of C. rnhi than 
