4 PROCEEDINGS OF THE NATIONAL MUSEUM aet. 5 



The wing spot at the base of the second fork is as in modern 

 PhrygaTiecL 



AMAGUPSYCHE PERLATA, new species 



Plate 2, fig. 14 



Anterior wing 16 mm. long and 8 



broad; uniform dilute fuliginous, not 



spotted; costal area dark fuscous. Length 



of discoidal cell 4 mm., its end to apex 



of wing about 7.5 mm. ; length of median 

 Fig. 2. — Discoidal and median n i- i ,, a ^ ^^ j» 



CELLS OF amagdpsyche PER- Cell slightlj over 4 mm. ; length ot 



^^"^^ cellula thyridii 6 mm., its base 4 mm., 



basad of level of base of discoidal; length of second anal 

 10 mm. 



Tertiary of Kudia River, Siberia ; both impressions found. 



H olotype. —C2it. No. 69594, U.S.N.M. 



Family LIMNEPHILIDAE 



INDUSIA COMMINUTA, new species 



Plate 2, fig. 12 



Case cylindrical, straight, about 8 mm. long and 3 wide, at first 

 sight appearing as if made of sand grains, but under the microscope 

 seen to be covered with minute irregular vegetable fragments, not 

 so closely disposed as to hide the entire surface. Only in one case is 

 a very small short piece of Sequoia leaf employed. Some specimens 

 are distinctly narrower at one end. Very abundant in Tertiary of 

 Kudia River, Siberia. The name Indusia is employed for caddis- 

 cases which cannot be referred to a definite genus. The reference of 

 this and the next to Limnephilidae is provisional. 



H olotype.— C2it. No. 69599, U.S.N.M. 



INDUSIA SEQUOIAE, new species 



Plate 2, fig. 13 



Case cylindrical, straight, about 18 mm. long and 6 wide, com- 

 posed of vegetable fragments, mainly short pieces of leaves of Se- 

 quoia langsdorfli, arranged irregularly, but obliquely transverse. 



Tertiary of Kudia River, Siberia. 



H oloty pe.—C2ii. No. 69595, U.S.N.M. 



LIMNEPHILUS RECULTUS, new species 



Plate 1, fig. 9 



Anterior wing probably 18 mm. long, but only 15 mm. preserved, 

 the base lost; width 7 mm.; apical cells (back to about 7 mm. from 

 apex) clear hyaline, the rest of wing dilute fuliginous, but not 



