FORMATIONS OF CAMBRIAN AGE. 13. 
is not associated with the other species, but occurs in a bed a few feet 
higher in position, is a Wisconsin form, of peculiar type, which is now 
recognized for the first time from the east. The association with a well- 
defined species of Dikelocephalus, of the species which has here been 
referred to the genus Olenellus, would be of much greater interest if 
the identification could be made with certainty, but, in any case, it 
suggests the possibility of a much longer range for the genus Olenellus. 
in geologic time than has been ascribed to it. This genus is usually 
considered as particularly characteristic of the very lowest Cambrian. 
strata, but here it seems to be associated with a fauna which bears 
unmistakable marks of upper Cambrian age. 
In A. J. Graey’s quarry (Locality 136 C), just south of Newton, a 
few imperfect specimens of the brachiopod, described as Orthis new- 
tonensis, have been detected; and again, the same species has been 
found in an abandoned quarry north of Andover, near the Delaware, 
Lackawanna and Western railroad, west of Long pond (Locality 
158 C). In neither of these localities have any trilobites been found 
associated with the brachiopods. 
About one-half mile north of Blairstown (Locality 175 A), in an 
abandoned quarry, a bed about one foot in thickness was found to 
contain many fragments of trilobites, and the following species have 
been identified: 
Agraulos saratogensis Walc. 
Ptychoparia blairi n. sp. 
Ptychoparia calcifera Walc. ? 
Of these species one is described for the first time in the present 
report, the other two being identified with species described by Walcott 
from the upper Cambrian limestones of Saratoga county, New York. 
One other fossiliferous locality in the Cambrian portion of the 
Kittatinny limestone has been found in Robinson Brothers’ quarry, 
south of Carpentersville (Locality 341 A). This locality is situated 
in one of the outlying areas of the limestone, occupying the valley 
of the Pohatcong river; only one species, Solenopleura jerseyensis 
Weller,* has been found, which was described for the first time from 
this locality. 
The position of these various fossiliferous beds of the Kittatinny 
limestone, in the formation as a whole, cannot be determined witly 
certainty, but it may probably be stated, with a degree of safety, that 
*In the Annual Report of the State Geologist for 1899 this species is doubtfully 
referred to the genus Liostracus. 
