1895. ] NEW YORK ACADEMY OF SCIENCES. 113 
eral horizons of the Cambrian and Ordovician rocks of this 
region, viz.: Div. 1, Bands ¢ and d, Div. 3, Band d. In one re- 
cently found in Band 3d, of Div. 1, the larger set of spicules is 
intermediate in size between those that occur in Bands ¢ and d; 
it also has a secondary set of spicules (of the flesh?) of small 
size. 
Horizon and locality. Shales of Assise 2, Band b, at Han- 
ford Brook. Scarce. 
ASTROCLADIA (?) ELONGATA. PI. IL., fig. 1. 
Trans. Roy. Soc. Can., vol. vii., sec. iv., p. 149, pl. vii., fig. 6. 
_ ASTROCLADIA (?) ELEGANS. PI. II., fig. 2. 
Trans. Roy. Soc. Can., vol. vii., sec. iv., p. 149, pl. vii., fig. T. 
ASTROCLADIA (?) viRGULOIDES. PI. II., fig. 3. 
Trans. Roy. Soc. Can., vol. ii., sec. iv., p. 149, pl. vii., fig. 8 @ 
to ¢. 
BRACHIOPODA. 
LINGULELLA, Salter. 
LINGULELLA Martinensis. PI. II, figs. 6 a to d. 
Trans. Roy. Soc. Can., vol. vii., sec. iv., p. 155, pl. viii., fig. 4. 
Original description. “ Orbicular ovate, broadly rounded in 
front, somewhat ventricose. No other sculpture has been ob- 
served than that of concentric and radiating strie. 
Size. Length of the ventral valve about 10 mm.; width about 
8 mm. 
Horizon and locality. Dark grey sandstone of Band b., Assise 
1, in Div. 1., St. John Group at Hanford Brook. 
“This species in its deep, round valves approaches an Obolus 
in aspect. It is larger than any other Lingulella found with it. 
Later collections enable the author to extend and improve 
this description. There are examples showing the surface of 
the shell, and others which give a clue to the internal features 
of the valves. : : 
Sculpture. The shell has marked concentric ridges of growth, 
especially on the anterior part, and over and between these are 
fine concentric ridglets ; these have a beaded surface, the beads 
being sometimes replaced by little lamellze. 
Interior of the ventral valve. The deltidial area in this valve 
TRANSACTIONS N. Y. ACAD. ScI., Vol. XIV., Sig. 8, April 30, 1895. 
