PART I CHAZYAN AND RELATED BRACHIOPODS—COOPER 221 
suggest relationship to E. nympha and E. nymphoidea, but they represent a 
smaller shell than either of the two mentioned. Possibly the present specimens 
represent young of the former, but this cannot be established in their partially 
crushed state. 
Genus PALAEOGLOSSA Cockerell, 1911 
PALAEOGLOSSA ? BELLI (Billings) 
Plate 7, F, figures 25-29 
Lingula belli Birttncs, Canadian Nat. Geol. vol. 4, p. 431, figs. 7, 8, 1859; Geol. Surv. 
Canada, 15th Rep. Progress, p. 124, figs. 47a, b, 1863. 
Obolus belli (Billings) Watcott, U. S. Geol. Surv. Mon. 51, pt. 1, p. 386, pt. 2, pl. 38, figs. 
3a, b, 1912. 
Specimens referred to this species by Raymond are not here included in the 
synonymy because the specimens are too badly damaged and are much smaller 
in size. It is not now possible to place them properly; better material will be 
needed for certain identification. 
Types—Lectotype (Walcott, 1912, pt. 2, p. 130): G.S.C. 1026b; paratype: 
G.S.C. 1026c; figured specimens: U.S.N.M. 109231a,b; Carnegie Mus. 5431. 
Horizon and locality —St. Martin formation,Island of Montreal, Quebec; base 
of Chazy group, Valcour Island, Lake Champlain, Plattsburg (15’) Quadrangle, 
N.Y: 
PALAEOGLOSSA MYSTICENSIS Cooper, new species 
Plate 9, G, figures 17-19 
Shell of about medium size for the genus, light gray in color, length approxi- 
mately 14 times the width. Beak narrow; sides gently rounded and diverging 
to the anterior margin which is narrowly rounded. Greatest width at a point a 
short distance anterior to the middle. Lateral profile slightly convex; anterior 
profile broadly convex but with moderately steep and short lateral slopes. In- 
terior with long median ridge extending for about half the valve length. 
Measurements in mm.—Holotype (estimated), length 11.5, width 7.6. 
Types.—Holotype: 66285a ; figured paratypes : 66285b,c ; unfigured paratypes: 
66285d-f. 
Horizon and locality Mystic conglomerate in Quebec: Range 6, Lot 20, near 
Mystic, Stanbridge Township. 
Discussion.—This species is characterized by the long median septum in the 
brachial valve, which is the only valve available for study. It differs from P. at- 
tenuata, type of the genus, in its more slender form. 
PALAEOGLOSSA ? PULICIS (Sinclair) 
Lingula ? pulicis Stncuatr, Trans. Roy. Soc. Canada, ser. 3, vol. 39, sec. 4, p. 68, pl. 2, 
figs. 7-9, 1945. 
Types.—Holotype and paratypes in private collection G. W. Sinclair. 
Horizon and locality—Black River?, Riviére Sault 4 la Puce, Montmorency 
County, Quebec. 
