NEUROPTEHA TRICHOPTERA LEPTOCERID .!:. 191 



Length of body, 5-6.2o mm ; of front wing, 5.5 mm ; of hind wing, 4 mm ; 

 breadth of front wing, 1.5 """j <>f hind wing, 1.2"""; length uf tuft of hairs. 

 0.75 mm . 



Florissant, Four specimens, Nos. 2142, CMM, 1<)7<)2, 1:5137. 



Sublamily LEPTOCKI M I >.l : Stephens. 

 No fossil species of this subfamily have been described. but 

 mentions several species which he refers to Mystacides and < Montoceruni. 

 Two Florissant species arc found, which are believed to he most nearly al- 

 lied to Setodes. The larva- of this group are found more often in running 

 than in standing water, but frequent both; the case is usually a free sand 

 tube ; the members of the subfamily are distributed all over the world. 



SETODES Rambur. 



This genus, as existing at present, is found well represented in regions 

 as wide apart and as different as North America, Europe, and the Ka-t 

 Indies. None have before been reported fossil, and the two species we have 

 referred here are so placed more from their general aspect than for any 

 other more solid reason. The form and pointedness of the wings and tin- 

 general structure of the antenna? and legs look evidently in this direction. 

 The larvae of this group inhabit both standing and running waters. 



Table of tin s;p, , ,,-, ,,f SeMr*. 



Winps at rest extending; far lipyoml tin- :iti< lumen .................................... 1. S. portionali.i. 



Wings at rest not reaching the tip of the alidomni .................................... 2. S. abbrei-\at<\ 



1. SETODES PORTIONALIS. 

 PI. 15, Fitf. I.',. 



A single specimen is placed here, tin- pointed form of the wings, the 

 si/.e, and the whole aspect indicating this -roiip of caddis-Hies: the wii 

 however, are so thickly clothed with scales that no neiiratioii can be dis- 

 tinguished. The body is tolerah'.v slender, the antenna' and lej-- exceeiliugh' 

 long ; (inly a portion of one antenna, as long as the h(.d\ , is preserved, but 

 this shows no indication whatever of diminution in si/.e: it is rattier stout. 

 as stout, indeed, as the tarsi, and the joints four or five times as long as broad, 



c\ lindrical, pale hn>\\ n, \\ ith dark brown incisnre> ; the length of the basal 

 joints is not determinable. The legs extend a long way beyond the tip of 



