124 THE ENTOMOLOGIST. 



found the same perfectly formed male organ in the male hybrid 

 Sphinx ocellatiis-jjojmli ; but in the female the parts were very 

 distorted, and portions of the male organs intermixed. The con- 

 dition of the female organ I should say would make it impossible 

 for them to continue the race. On the other hand, the male 

 organs are so perfectly formed, I should think it quite possible 

 that they would cross again with one or other, or perhaps both, of 

 the female parent species. 



Below the first figure are the terminal segments of the 

 different bodies, the hybrid being a modification of both 

 species. 



We now come to the harpes, which on comparison with the 

 hybrid are found to be very different ; and it is not altogether 

 surprising to find that the hybrid has followed one, viz., ziczac, 

 more than a modification of each, although there are certain 

 traces of each used to build up the new form of the hybrid. 



The uncus is again very different in the two parent species ; 

 here the hybrid tends rather to dromedarius, but not very dis- 

 tinctly, as it is unlike either, yet savours of both. In point of 

 size ziczac is much larger than dromedarius ; the hybrid is be- 

 tween the two. The penis itself is much nearer ziczac than the 

 other species, the main difference between the two being that in 

 place of the long row of teeth of ziczac the hybrid has the small 

 patch of teeth that are present in dromedarius. Taking the 

 organs all round, there appears to be a little more of the ziczac 

 form than dromedarius, and perhaps leads one to expect the 

 coloration of the imago to lie in that direction ; this is so. After 

 my report to Mr. Bacot he very kindly sent me the remainder of 

 the insects. At first glance the hybrids appear to be a pretty 

 grey form of ziczac ; then on closer examination we find all the 

 strong markings of each faithfully reproduced. The modified 

 orbicular, the red marking on the inner margin near the apex, 

 and the submarginal row of red spots of dromedarius being very 

 noticeable. The hind wings are lighter than either, and have 

 the stronger dark blotch of ziczac at the anal angle ; in fact, it is 

 difficult to find a single marking that is not reproduced in the 

 hybrid. 



The scales are interesting, but difficult to be quite sure that 

 the same portion of each wing is tapped. Generally speaking, 

 the larger scales of dromedarius are four-toothed, rarely five. 

 Ziczac has five, six, and sometimes more teeth. In the hybrid 

 there are usually three ; occasionally there are four teeth, and I 

 have failed to find one with five teeth. In the scaling there 

 appears to be a tendency to produce a new form of scale, possibly 

 an inferior one, rather than a modification of the forms possessed 

 by the parents. 



The Elms Dingle, Liverpool : April 9th, 190G. 



