THE CANADIA.N ENTOMOLOGIST. 247 



believe that any of the genera belong to the family to which they are 

 referred. I have not had specimens for study, and cannot say anything 

 positively. 



The NydeolidcB are fairly well defined, and dose relatives to the 

 Lithosiidce which follow them. This family as a whole is closely allied to 

 the Arctiidce, the presence of the ocelli only separating them. 



The Liparidce begin a new series of Bombyces, and the family is a 

 fairly distinct one. 



The Li)?iacodidce have been in considerable confusion ; but Mr. 

 Dyar's work promises to let in some light. In the larval state at least 

 they were well distinguished. 



The PsychidcK are also fairly well limited. 



The DioptidoE. contain only a single species, referred to the family by 

 Mr. Grote. The reference is at least questionable, and I assume no 

 responsibility for it. 



The Notodontidce are quite well represented in our fauna, and are the 

 most noctuiform of the Bombyces. The place given them in the series is 

 a little open to question ; but not more so than in several other cases. 

 Generic references here are very unreliable. 



The PlatypterygidtE are tolerably well limited, and not numerous in 

 species with us. 



The Saturniidce I have treated monographically, and they make a 

 very well defined family. 



The C er at camp idee have many' points of similarity with the Saturniidoe 

 and are as sharply defined. We strike here what I consider quite an 

 ancient type. 



The Bombycidce have Bornbyx mori as type, and possibly two sub- 

 families are indicated in the series as associated. 



The Cossidce and Hepialidce are both very well limited, while no more 

 related to each other than to the Sesiidae. 



Under the term Noduitia I have united the Thyatiridce, Noduidce and 

 Brephidce. The Noctuidae are a very complete family, in which several 

 quite distinct types seem combined. I have not been able to find any 

 satisfactory line of division for sub-families, and the groupings proposed 

 by Mr. Grote are too unequal in value and too entirely indefinable for 

 adoption. 



