1909] ROHWER — FOSSIL CEROPALID OF FLORISSANT, COL. 20 
S. senex. Color entirely black. Wings hyaline; beyond the middle of the stigma 
dusky. 
The following measurements are in 2: — 
Length of stigma : , : : : : : : : . 890. 
Width of stigma, about : ; , : ; ! : : 20D. 
Basal nervure basad of stigma. : : ; : SiO: 
Length of first cubital cell. ; : : : ; ; . 4 ~  22K0: 
Length of first cubital on rad. : : : : : 2 | 250. 
Length of second cubital cell on rad. . : : : . 918. 
Length of second cubital cell on cu. . : : 3 ; : ; a 1020: 
Length of third cubital cell on rad. ; : , = Ge 
Length of third cubital cell on cu. ; : : lis. 
Distance from third tr. cu. to costa on rad. , 3 : ; i ye Os 
First tran. cu. basad of first recur. n. . : : : e : a 510: 
Second tr. cu. basad of second recur. n. , : : : ‘ . 680. 
Basal nervure above cu. : : d : : ; : : == 0G: 
Basal nervure below cu. 680. 
Hahitat: — Tertiary shales, Bonne eaendo, Sinker “W hice aurtie of 
a mile southwest of the town) 1908, (S. A. Rohwer). Type in the University of 
Colorado. 
This species is most closely related to Salius florissantensis (CkIl.), but it is 
easily known from that species by the different markings of the wings. It is also 
related to Salius senex Roh., but that species has a smaller second cubital cell, and 
the apical part of the wings are not dark. I do not know a recent species found in 
North America which is just like S. laninarus in the flattened abdomen. 
SALIUS SCUDDERI (CKIl.). 
2. A slender species with a subquadrate head. Sculpture subtle. Antennal 
joints cylindrical, well defined, apical joint short. Wings with a cloud beyond the 
stigma, but not extending to the apex or bottom of the wings, and a smaller one on 
the basal nervure. 
SALIUS FLORISSANTENSIS (CkIl.). 
A large species. Sculpture subtle except the postscutellum which is obliuqely 
striated. Wings with a cloud below and in front of the stigma, and one on the basal 
nervure. 
The following is a list of the fossil Ceropalids of the world: 
Prpsis sp. Burmeister— Baltic Amber; Lower Oligocene. Handbuch Ent. I, 
p. 636, 1832. 
