NEUKOPTERA— TKIOHOPTEKA— HYDROPSYCHID^. 185 



5. Deeobeochus maecidus. 



PL 15, Fig. 2. 



A slender winged, griseous species, not far removed from D. commo- 

 ratus. The body, however, is tolerably stout, densely clothed, the head 

 small, with very slender pale antennae, the basal joint stout and globular, 

 the other joints slender, about twice as long as broad, and narrowly ringed 

 apically with fuscous. The legs are very long and delicate, tlie middle and 

 hind tibiae with two pairs of spurs. Front wings griseous, rather heavily 

 clothed with hairs, especially along the veins, which are thereby duskier ; 

 they are slender, well rounded at the apex, and not acuminate, as would 

 appear from the figure, where the wing is partially folded ; the neuration is 

 imperfectly shown in the plate. The first apical cell is very small, the third 

 a little longer than the fourth and much shorter than the second, which is 

 very long, nearly reaching the middle of the wing ; the length of the dis- 

 coidal and median cells can not be accurately determined. 



Length of body, 6.75""=; of fore femora, 1.4°""; mid femora, 2.2°"°; 

 mid tibiae, 2"" ; hind femora, 3°"° ; hind tibiae, 2.75"" ; front wings, 7-8"" ; 

 width of same, 2.75"". 



Florissant. Three specimens, Nos. 9416 and 9621, 10106, 12010. 



6. Deeobeochus frigescens. 



PI. 15, Figs. 6, 16. 

 Derobroohus frigescens Scudd., Zittel, Handb. d. PaliBont., I, ii, 779, Fig. 986 (1885). 



A somewhat stout bodied but small species, the smallest of the genus, 

 not very heavily clothed with scales. The head is moderately large and 

 the antennae very slender, with a large globose basal joint. The legs are 

 only preserved in a fragmentary way in all the specimens. The front wings 

 are tolerably broad, broadest only a little beyond the middle, the apex 

 scarcely subacuminate but well rounded, the apical margin oblique but full ; 

 the first apical fork is unusually straight with no upward curve, and the 

 cell not much shorter than the third apical cell ; the second apical cell is 

 about twice as long as the third, and the fourth falls about midway between 

 them in length ; the discoidal cell and the median are of about equal length 

 with the second apical cell, and are very slender, particularly the median. 

 These features are not all produced in the plate. 



