attacidjE. 293 



any trace of the small oblique dash of red which runs from the costal nervure on 

 primaries to the ocellus as is seen in A. luna*, though not in A. selene, nor is there 

 anything like an intermediate amount of the beautiful white down on the bases 

 of the wings found so plentifully in A. selene. The $ hybrid leans towards A. selene, 

 and the ? towards A. lima (Watson, Ent., xxvi., p. 176). The larvae were very 

 like those of A. luna, only more richly coloured, and most of them considerably 

 larger than A. liina ; the cocoons were very different from either those of A. lima or A. 

 selene, pale-coloured and silky, thinnereven than those of A. luna, and the hybrids are very 

 beautiful, the 3 sa great deal handsomer than 3 A. luna, with very pointed primaries (like 

 A. selene), but the eyespots a bright pink ; a few have the pink streaks on the anal 

 angles like A. selene, but most of them are whitish with only the faintest blush. 

 The ? s are more like % A. luna, only considerably larger, with the eyespots all 

 pink instead of yellow (Morton, loc. cit.). Miss Morton further adds: '"It was 

 remarkable that, in all the specimens bred, the ? hybrids followed A. luna, and 

 the 3 s followed A. selene, yet A. selene was the mother of the brood. All emerged 

 from August 30th to November of the same season ; of course the later stages 

 were passed in the house. A. luna, it may be added, goes over the winter as a pupa." 



Miss Morton notes that the only trouble in pairing is that one 

 must have a $ of the species one wishes to attract to the $ which 

 one wants to hybridise, e.g., a $ P. cecropia was wanted to pair with a 

 2 P. califomica (ceanothi). The $ P. ceanothi was left in cage with door 

 open, a $ V. cecropia being in a cage above her with the door shut. 

 The attracted S s of P. cecropia, being unable to reach the $ P. cecropia, 

 paired with the female P. califomica (ceanothi). To get the crossing 

 with the ? P. gloveri, two males of P. cecropia were placed with her 

 in the cage, and the strongest paired with her. With the A. luna 

 and A. selene cross a $ A. selene was tied at night on a hickory- 

 tree ; a $ A. luna was placed in a closed cage at foot of tree ; 

 in the morning the 2 A. selene was paired with a wild $ A. luna. 

 The hybrids frequently remain two years in the pupal stage ; 25 

 emerged the second year from one brood of larvae, yet all the A. luna 

 and A. selene emerged the same autumn without even going over one 

 winter. 



4. P. hyhr. heyer i,Tux.t[califomica{ceanothi) 3 x cecropia % ]. — This is the recipro- 

 cal cross to /Miybr. watsoni, and has been bred by Heyer (see Soc. Entom., xiii.,p. 137). 



Heyer notes that attempts to pair hybrid cecropia x califomica 

 {ceanothi) (=watsoni) and calif ornica {ceanothi) X cecropia (=heyeri) 

 among themselves failed to produce a single egg, and the body of 

 a 2 which was opened showed no trace of any. On the other 

 hand $ s of P. cecropia which were paired with ^s of both these 

 hybrids produced a very high percentage of fertile eggs. 



Wailly records (Ent., xxix., pp. 235 et sea.) the rearing of 

 hybrids between the two allied species Antheraea roylei and A. 

 pernyi, the moths pairing together as if they were the same species, 

 and he adds that this " is the same with all closely allied species. 

 The hybrid was robust, the specimens perfectly fertile inter se, and 

 at the end of three years showed no sign of degeneracy. The 

 hybrid A. pernyi X roylei was described by Kirby (Proc. Ent. Soc. 

 London, 1882, p. vii), and that of A. roylei X pernyi by Moore {Ent., 

 xxix., p. 237). These descriptions read as follows : 



( 1 ) Antheraeahybx : kirby i,Tutt [pernyi x roylei). — The hybrid before us expands 

 just 6" across the wings, which is about the size of large ? examples of the two 

 parent species. It is of a greenish-buff colour, nearly as in the ? of A. roylei, but 

 much clearer and with a distinct tawny shade, especially within the common band ; 



* Griffiths notes (in lift.): "My hybrid mortoni, a ?, has this red dash well- 

 developed, though narrower than in luna ; it also has the hindwings deeply scalloped," 



