54 
Dimensions. Holotype — length, 42 mm.; height, 35*5; semidiameter, 
13 ; horizontal distance from anterior extremity to umbo, 15. 
Locality. Zone of Homolsomites poecilochotomuSj on the southeast 
shore of the peninsula. 
Order, Teleodesmacea 
Family, astartidae 
Genus, Astarte Sowerby 
A starts harrisonensis sp. nov. 
Plate XV, figures 4, 5 
Lunule and escutcheon, deeply impressed. Ornament of high, con- 
centric costae, which are somewhat irregular as to size and continuity. 
On a shell of 21 mm. height there are 85 costae in 10 mm. of radius, counted 
about the centre of the disk. Superimposed upon this ornament are fine 
growth lines visible only with a magnifier. The whole basal margin from 
lunule to escutcheon is finely denticulate inside. The species might be 
confused with A. dacotensis Whitfield and Hovey, but it is distinguished by 
its much less diameter. 
Dimensions. Holotype — length, 21 mm.; height, 21; semidiameter, 
4*3; apical angle, *108 degrees. 
Locality. Talus on small creek one mile east of Billhook creek at 
1,500 feet altitude. 
Astarte barbara sp. nov. 
Plate XV, figure 6 
Subquadrate, with the umbo extremely anterior. Ornament of weak, 
concentric costae. Basal margin, denticulate. Somewhat resembling 
A. calif ornica Stanton, but differing in the more anterior and less prom- 
inent umbo. 
Dimensions. Holotype — length, 38 mm.; height, 30; semidiameter, 
5 '5; apical angle, 116 degrees. 
Locality. Zone of Aucella canadiana, west side of Harrison lake 350 
yards from shore and 1,400 yards north of the mouth of Deer creek. 
Name. The word barbarus denoted to the Homans that which was 
not Homan, that is to say, foreign. So this Astarte, a lonely foreigner in 
the great community of Aucellae of the canadiana zone, may well be called 
barbara. 
Family, saxicavidab 
Genus, Saxicava Fleurian 
Saxicava rugosa Linnaeus 
Two well preserved specimens from the clay of the Squawkum for- 
mation. 
Locality. Main line of Canadian Pacific railway, 750 yards west of 
the Harrison Hiver bridge. 
