102 STUDIES IN AMERICAN EPHYDRIDAE (dIPTERA) 



[111.]; University of Kansas, [Kans.]; University of Nebraska, 

 [Neb.]; Ohio State University, [Ohio]; United States National 

 Museum, [U. S. N. M.] ; Washington State College, [Wash.]. 



It may be well to explain that in the list of specimens examined 

 under each species, the sequence of citation and punctuation is as 

 follows: Locality, date of collecting, (collector), number of speci- 

 mens, [source]. Although some of the data may be wanting 

 there should be no confusion in understanding the citation. 

 The list of the specimens examined always include the typical 

 series in case of new species or forms. 



I. REVISION OF THE SPECIES OF THE GENUS 

 PARALIMNA 



It is with much hesitancy that I undertake to publish a synop- 

 sis of the species of this difficult genus at this time, but owing to 

 the recent acquisition for a limited time of an extensive collec- 

 tion, I feel that it will not profit much to withhold the results of 

 my study. The genus is very discouraging to the student on 

 account of its homogeneousness. I have been compelled time 

 and again to lay it aside after repeated attempts to separate the 

 mass of material into satisfactory species. This is especially 

 true respecting the appendiculata-gvoup. It will take a great 

 deal of study with much more material from all possible locali- 

 ties to obtain more satisfactory results. However, I feel that this 

 somewhat preliminary study will throw some light on the class- 

 ification of the species of this genus. 



PARALIMNA Loew 



1862. Paralimna Loew, Mon. N.A. Dipt., i. 138. 



1862. Paralimna Loew, Ofver. Kong. Vet.-Akad. Forh., 13,. 



1896. Paralimna Becker, Berl. Ent. Zeit., xli, 114. 



This genus belongs to the Notiphilinae of the group Notiph- 

 ilae, a group including the genera Dichaeta and Notiphila. 



The position of the genus is rather isolated. It is not inter- 

 related to any of the others so far as our present knowledge goes. 

 Its closest ally is Dichaeta, apparently through the abbarent 

 Paralimna dedpiens and its allies. On the otlicr hand may be 

 observed the similarity to Discocerma in the frontal characters 

 and the arrangement of the setulae and macrocheatae of the 

 mesonotum. However, the erect extensor bristles on the middle 



