266 THE CANADIAN ENTOMOLOGIST. 



the fall of the leaf Telea and Actias have not this habit. The cocoon 

 falls in the autumn with the leaf which was used in the spinning. The 

 Attacid group, with falcate fore wings and ovate secondaries, have 

 generally this habit of attaching the cocoon. This proves at once the 

 validity of Callosamia, which has the habit strongly developed, as 

 compared with Saniia, which has it not at all, but spins a thick double 

 cocoon attached to the branches thettiselves, often near the ground and 

 much after the fashion of the European Satu7-nia. 1 therefore 

 place the genera with the pedicel habit at the commencement of the 

 family, Satuniia and Satnia following and closing with Actias and Telea, in 

 which the thinner cocoon falls with the leaf to the ground. This study of 

 the genera of our Saturfiidce leads virtually to the same arrangement as 

 proposed by me in 1874 ; it places merely Actias and Telea together at 

 the last, instead of commencing with them ; the main point lies in the 

 association of the genera which are naturally nearest, Attacus, Phi/osamia, 

 Callosamia, and again Sainia and Satiirnia. Asking his opinion, Mr. 

 Dyar kindly answers me that he would arrange the Saturnina "just like 

 your list of 1882, except that Thauma and Quadrina should change 

 places." I do not know Thauma ; of Quadrina I had only the $ type, 

 and I never possessed an example of Gloveria, with which Neumoegen 

 and Dyar unite it, from a photograph of the venation furnished by Prof 

 Comstock, considering it the same as the European Dendrolimus, with 

 the types of which I am also unacquainted. Those using the Philadelphia 

 Check List should therefore alter the incorrect classification there 

 adopted, for that in the New York Check List, as here amended in detail. 

 I would also suggest, that the specimens in the National Museum in 

 Washington be labelled to agree with the list given here, as their present 

 labels must be, in large part, erroneous. 



The first separation of the Hemileucidce was by Grote and Robinson 

 in 1866, under the name Hemileuciui ; while the genera of the Dryocam- 

 pifii grouped together in the same paper correspond to the family 

 CitheronidiB of Dyar. I have elsewhere shown that Kirby is incorrect in 

 giving Laocoon as the type of Eacles, Hubn. Verz. The type of Eacles 

 is fixed by Dr. Packard in 1864 ; the two genera are distinct in all stages. 

 The revision of the species of Citheronia, given by Grote and Robinson 

 in 1866, has perhaps not been read by Mr. Kirby. I would follow Mr. 

 Dyar in excluding the Lacosomidce from the present series. I am indebted 

 to Neumoegen and Dyar for details of synonymy and locality. 



