REPORT OF THE STATE ENTOMOLOGIST IQO/ 



309 



provided with several whorls of setae. The genltaHa are also of a 

 different type. 



Nothing is known concerning the life history of American forms. 

 Kieffer states that the larvae of the European C. muscicola 

 Kieff. occur on mosses. It is probable that these forms are sylvan 

 as in the case of Lestremia and allied genera. 



Key to species 



a Length 4 mm ; antennae binodose americana n. sp., C 929 



aa Length 1.5 mm ; antennae not binodose slossonae n. sp., C. 931 



ig. 29 



Catocha americana n. sp., 6th antennal segment of male, much en- 

 larged. (Original) 



microcerAta n. g. 



This genus has been erected to include several forms remarkable 

 because of the greatly reduced male antennae. These organs are 

 composed of but 8 to 9 short segments, the second being greatly 

 enlarged and in general appearance much resembling those of the 

 Campylomyzine genus M i c r o m y i a . The genitalia also differ 

 from those of Lestremia. The female, which we have provisionally 

 associated with the above mentioned male, has very small antennae 

 composed of 10 short joints, the second being somewhat enlarged, 



