Notes in 1887 upon lepidopterous larve, dc. 578 
possess forked tips. Hence the young form of this larva 
combines the characters of Ceratomia, Ceratocampa, and 
Aglia in the most beautiful manner. 
Prof. Meldola informs me that he has long considered 
that the caudal horn of Sphingide is to be looked upon 
as a remnant of a general spinous covering. Wilhelm 
Muller (‘“‘Sudamerikanische Nymphalidenraupen,” pages 
949—250) identifies it, in the most convincing manner, 
with the dorsal tubercles upon the 8th abdominal seg- 
ment of Saturniade (‘‘dsdorn”). The two terminal 
bristles are the chief bristles No. 1 carried up on the 
summit of the spine or horn itself. 
We have therefore an accumulated body of facts and 
conclusions which seem to render it certain that the 
Sphingide are a specialisation of the group of Satur- 
nian Bombyces, and that the following order repre- 
sents the nearest affinity, and is an approach towards 
the expression of genetic relationship. 
Sphinx. 
Acherontia. 
Smerinthus. 
Ceratomia. 
Lophostethus. 
Aglia. 
Ceratocampa (Attacus). 
Saturnia. 
The other genera of Sphingide will precede Sphinx as in 
the usual arrangement; but some of them, especially 
Sesia, may be altered in position, when the ontogenies 
have been worked out. Acherontia also may be modified 
in position, but not, I think, to any great extent. 
Endromis and the so-called Bombyx mori (which Mr. 
Kirby tells me he has never considered as a Bombyx) 
will also be included between some of the gaps in the 
above-mentioned list, but their exact position is uncertain 
until the ontogenies have been worked out from this point 
of view. 
The imaginal condition of the Sphingide, which come 
nearest to Agha, &c.,is also strongly in favour of the 
above arrangement. They alone do not feed in the 
perfect state, and do not fly in the characteristic manner 
of other hawk-moths: in the strict sense of the word 
2Q2 
