NEUEOPTEEA— TEICHOPTERA— HYDROPSYCHID^. 189 



2. Mesobrochus imbecillus. 

 PI. 15, Fig. 13. 



Closely allied to the preceding, but a smaller and comparatively stouter 

 form. The basal joint of the antennje is cylindrical, and though very large 

 not so stout as in that species, but the stalk is as there. The legs are a little 

 shorter and less slender. Wings sliaped as in M. lethseus, but compara- 

 tively a little shorter ; the neuration appears to be identical with that of the 

 other species (it is wronglv given on the plate), excepting that the anasto- 

 mosis is even farther tov . the base of the wing. 



Length of body, 5.5""" ; of front wing, 6.25°"" ; width of same, 2""°. 



Florissant. Sixteen specimens, Nos. 1306 and 4423, 2177, 2364, 2984, 

 4908, 5462, 6861, 7042, 7568, 7883, 10225, 10407, 10430, 11005, 12234, 

 13138. 



7. PALADICELLA gen. nov. {TcaXaw';, a-, S/ueXXa). 



Still another anomalous genus is found among the Florissant Hy- 

 dropsychidpe, in some respects allied to Mesobrochus, since the first and fifth 

 apical cells are wanting and the other apical cells are nearly equal and long. 

 The other features, however, are very diff"erent, partly perhaps from the 

 much greater comparative brevity and breadth of the wing. The third and 

 fourth apical cells are so closely approximated as nearly to touch throughout 

 their length, even to the very margin of the wing. The discoidal cell is 

 closed and relatively much shorter than it would be in Mesobrochus were 

 it closed at the same time ; that is to say, the branch of the sector usually 

 furnishing the first apical sector has a much later origin in Paladicella than 

 in Mesobrochus. The name given is not meant to have any reference to 

 the recent genus Adicella. 



Paladicella eruptionis. 

 PI. 15, Fig. 14. 



This species is represented by a single specimen and its reverse, toler- 

 ably well preserved on a dorsal view with partially expanded wings. The 

 body is moderately slender and not heavily clothed, the head rather small, 

 front legs not very large. The wings are not slender, broadest before the 

 apical third, with rounded contours, the well rounded apex above the mid- 

 dle, the apical margin more oblique than the costal as it falls to the apex. 



