51 
tubercles (bullse), which are widely spaced and have a peculiar oblique 
elongation. Area, otherwise smooth. Escutcheon, marked by transverse 
lines of small tubercles continuous with tubercles of inner carina. 
Dimensions. Length, 77 mm.; height, 63; semidiameter, 22. This 
length and height may be slightly vitiated by diastrophic distortion. 
Locality. Zone of Yaadia lewisagassizi, on the south shore of a little 
point on the west side of Cascade bay, 1,090 yards south of the north end 
of that bay. Occurs with Aucella teutoburgensis. 
Name. In honour of Captain Lewis N. Agassiz, Royal Welsh Fusiliers, 
one of the pioneers of British Columbia. 
Genus, Quoiecchia gen. nov. 
Genotype, Quoiecchia aliciae sp. nov. 
The genus is distinguished by the small-sized shell and the peculiar 
arrangement of the ornament. It is unlike any other group of Trigoniae, 
though there is a suggestion of this style of ornament in Haidaia statluensis. 
Name. From Kwoiek, Indian geographical name. 
Quoiecchia aliciae sp. nov. 
Plate XIII, figures 3-8 
According to the Agassiz classification this species would be referred 
to “les lisses” (glabrae of Lycett), a group of composite origin, being smooth 
derivatives of various stocks. The form is probably an aberrant offshoot 
of the great, protean Haidaia. The ornament of the disk is formed by 
two sets of furrows. One, a radial set, is strong near the umbo but becomes 
obsolete near the middle of the disk. The other, a concentric set, appears 
first at 10 mm. from the umbo and becomes increasingly stronger toward 
the basal margin. The spaces between furrows stand up as low, obtuse 
costse; between two intersecting sets of furrows, as low, squarish tubercles. 
The carinae are obsolete, the area being ornamented only by the posterior 
continuation of the concentric furrows. The interior surface of the pos- 
terior half of the basal margin is crenulated, forming four or five broad, 
tooth-like processes which interlock in opposite valves when the shell 
is closed. 
Dimensions. Holotype, a right valve — length, 21 mm.; height, 19; 
semidiameter, 6. Paratype, a right valve — length, 30; height, 34; semi- 
diameter, 15. This shows that as it grows the shell becomes dispro- 
portionately high and robust. 
Locality. Zone of Quoiecchia aliciae, 235 yards from lake shore, on 
the left bank of a little brook that enters Harrison lake from the west 
1,450 yards north of the mouth of Deer creek. 
Name. Geographical — ^St. Alice’ well. 
