80 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



contains mainly species, of which the life history is known), but 

 our knowledge of the group has now so advanced, that such 

 descriptions can be made with profit to science and I realize the 

 obligation to make our North American fauna known so far as 

 possible. I also fully realize the propriety and value of the 

 Monroe Doctrine as applied to Entomology; it is an advantage 

 to science that American insects should be worked up by Ameri- 

 cans and that the types should be deposited in American Museums 

 in order that it shall not be as necessary for future generations to 

 go to Europe for information on American insects, as it has been 

 for the present generation. If we do not do our own work, others 

 will quite rightly do it and with that result. 



In a letter lately received from my good friend and master 

 Edward Meyrick of England, which I am permitted to quote, 

 he writes: "As to the principle of describing such species (with- 

 out biological notes) from North America, I describe all the 

 material that I have in hand of a family, before publishing that 

 family in the Genera Insectorum in order to make this work as 

 complete as possible. If you have species in good series, describe 

 them. I have thousands of undescribed species in hand and 

 material coming in constantly from all parts of the world, there- 

 fore I don't want to do American species, if any one else will do 

 them. But I want the North American species described; if you 

 do not do it I will have to do it myself." I quote this not because 

 an excuse is needed to describe our American Micros, but in 

 order to give my indefatiguable learned co-worker due credit not 

 only for his own enormous personal share in the progress of our 

 knowledge of the world's Microlepidoptera, but also for his ever 

 incitating influence on other workers, forcing us to keep step with 

 him as far as we are able. 



Memythrus perlucida n. sp. 



Labial palpi bright yellow, shaded exteriorly with vivid red. Head 

 reddish brown. Antennae reddish brown. A narrow collar light yellow, 

 bordered anteriorly with blue metallic scales. Thorax dark reddish brown, 

 narrowly edged posteriorly with yellow. Forewings light reddish brown 

 with the veins bluish black; extreme base of costa light yellow; cilia black- 

 ish brown. Hindwings glassy blue, entirely transparent, except a narrow 

 edge before the cilia, which is reddish brown mixed with black; veins 

 black, touched with red. Cilia backish brown. Abdomen reddish brown 

 with a narrow light yellow annulation on the posterior edge of second 

 joint and a broader yellow annulation on fourth joint. In the male the 

 posterior joints become somewhat lighter, touched with yellow; a short 

 double yellowish brush above the uncus, not projecting beyond the claspers. 

 Legs red, tarsi shaded with yellow. Alar expanse: 28-32 mm. 



