192 BIPTERA OF NORTH AMERICA. [PART IV, 



The LimnojMlina are further distinguished by the position 

 of the great cross-vein, which is generally farther beyond the 

 inner end of the discal cell than is usually the case among the 

 Tip. hrempaJpi. In Trichocera this cross-vein is at the very 

 end of*the discal celfe Exceptions occur, however (compare the 

 genus Limnophila at the end). 



Several remarkable foreign forms of LimnGphilina have been 

 described, but as I have not had the opportunity to study them 

 I will merely enumerate them here. (The descriptions of these 

 genera, with the necessary remarks and quotations, are repro- 

 duced or translated in the Appendix II.) 



Gynoplistia Westw. is a Limnojyhila with unipectinate an- 

 tennae in both sexes ; several species have been described from 

 Australia and South America. Mr. Westwood has even de- 

 scribed one, O. annulata, from North America. The description 

 is reproduced in the Appendix I. 



Ctedonia Philippi, from Chile, seems in no way distinct from 

 a South American Gynoplistia; Cloniophora Schiner, from 

 Australia, is established upon Gynoplistia suhfasciata Walker, 

 a species which shows some structural peculiarities. 



Cerozodia Westw, from Australia, seems also to belong to the 

 Limnophilina; it has 32-jointed, pectinate antenna. 



Polymoria Philippi, with five species from Chile, may be one 

 of the numerous forms of Limnoj^hila, although the statements 

 of the author are not complete enough to admit of any conclusion. 



Lachnocera Philippi, from Chile, is either a Limnophila with 

 four posterior cells, or perhaps a genus related to Goniomyia 

 (Eriopterina). The densely pubescent antennce of this genus 

 remind of the antennae of Limnophila lenta 0. S., which has also 

 four posterior cells and a venation not quite unlike Lachnocera. 



The Limnophilina contained in the Prussian amber are quite 

 numerous. Mr. Loew's pamphlet, Bernstein und Bernstein- 

 fauna, 1850, merely gives the names of the genera and species, 

 without descriptions, but owing to the author's kindness, 1 have 

 had a glimpse at the specimens, which convinced me of the close 

 analogy of some of them to North American forms, Cylind7'o- 

 toma longicornis Lw. is a Limnojjhila, closely allied to L. macro- 

 cera Say, by its long, pubescent antenniE, its somewhat elongated 

 last joint of the palpi, and its venation. Cylindrot. hrevicornis Lw^ 

 is a Limnophila of the type of L. tenuiptes Say; Cylindr. succini 



