128 TRANSACTIONS OF: THE [MAR. 17, 
ACROTHELE, Linnarsson. 
AcCROTHELE MarTtTHEewI!, Hartt. PI. v., figs. 6a and b, Ta and J, 
8a and 6. 
Lingula Matthewi Hart. Acad. Geol., 2d Ed., p. 644, fig. 221. 
Acrothele Matthewi U. 8. Geol. Surv. Bull., 10, p. 15, fig. 4, 4a. 
Trans. Roy. Soe. Can., vol. ili., sec. iv., p. 39, pl. v., figs. 15, 15a, 
16, 160, Viale: 
This is a species of wide range, and is somewhat common in 
the early Cambrian beds. I cannot find characters suflicient to 
distinguish the earlier forms from the type, which was found in 
Band c, except as varieties. Two such have been described in 
the Transactions above cited, but there is a third which should 
be referred to. 
var. COSTATA, n. var. Pl. v., fig. 9. 
Distinguished by six or more broad ribs, radiating toward 
the anterior margin. These ribs are not continuous, but are 
broken at certain lines of growth; they have not been observed 
near the umbo, but on the middle and anterior third of the 
shell they are well marked. This variety is more common in 
the shaly assises, whereas the thick, smooth shells are common 
in the sandstones. 
Sculpture of fine wavy or broken ridges, as in the other vari- 
eties. é 
Horizon and locality. Found in Assises 2 and 5 of Band 3}, 
at Hanford Brook; in Assise 5, of Band 6 at Caton’s Island, 
‘King’s county; and in Band d,at Porter’s Brook, St. John 
county. The shells in Assise 5 have more numerous ribs than 
the others. 
OrTHID sp. Pl. v., fig. 10. 
Remains of Articulate Brachiopods are rare in the part of 
the Cambrian in New Brunswick that underlies the Paradox- 
ides beds. Only one example has been found, and that quite a 
small one; it is an Orthid, but is too imperfect for comparison 
with known species. It is a dorsal valve from which the shell 
has been mostly exfoliated, leaving a mould of the interior. 
Horizon and locality. Dark sandstones of Assise 1, Han- 
ford Brook. 
