1875. | NEW SPECIES OF ERIGONE. 395 
lens; figure 2d represents those of the present species, and 1 ¢ those 
of E. persimilis ; these two figures are taken from a sketch of each 
in a similar position, under a high power, by Mr. Emerton. The 
caput has a central longitudinal row of tuberculiform denticulations, 
like those of FZ. persimilis, but of a smaller size. 
Mr. Emerton remarks upon the darker and peculiar colour of this 
Spider when compared with F. persimilis ; but this character, as far 
as it has yet been ascertained, is no certain specific criterion in the 
Spiders of this group; a long series of two well-known species (£. 
dentipalpis, Wid., and E. atra, Bl.), will furnish every variety of 
depth of colouring. 
In regard to the present species, other minor differences are ob- 
servable on a careful comparison with Z. persimilis and other, nearly 
allied, species. These differences will have to be carefully noted when 
the numerous Spiders of this group come to be monographed ; but 
for the present purpose the differential characters detailed above and 
in P. Z.S. 1874, p. 429, will be found sufficient for specific deter- 
mination. 
An adult male was received from Mr. Emerton, by whom it was 
found at Troy, near Boston, Massachusetts, U.S. A.; and a compa- 
rison of it, lately made, with the example*described P. Z. S. 1. c. 
shows the identity of the two. The present description notices the 
difference from £. persimilis (Cambr.), while that in P. Z.S. l. e. 
differentiates it from EH. longipalpis, Sund., and some other species. 
ERIGONE ORNATA, sp.n. (Plate XLVI. fig. 3.) 
Adult male, length 14 line. 
This species is very closely allied to Hrigone pictilis (p. 396), re- 
sembling it very nearly in the pattern on the abdomen; the darker 
portion of it, however, is more mottled and marked with pale yellow, 
and an uninterrupted oblique and slightly curved stripe traverses 
each side. It may also be at once recognized from L. pictilis by the 
absence of the occipital elevation; the occiput being only a very 
little, and uniformly, gibbous, or rounded, and, when looked at from 
above the caput, is less compressed laterally near its lower margins. 
The cephalothorax is glossy, and of a deep yellow-brown colour; and 
the caput has a few erect hairs on its upper part, as well as some 
others, directed a little backwards, on the ocular area; the height of 
the clypeus is half that of the facial space. 
The eyes are of moderate size, and relatively not greatly different 
from each other ; they are in the ordinary position; those of the hinder 
row are equidistant from each other, being separated by spaces equal 
to the diameter of one of the hind centrals, those of each lateral pair 
are obliquely placed and contiguous to each other, the fore lateral eye 
being larger than the hind lateral; those of the fore central pair are 
the smallest and darkest-coloured, near together, but not coutiguous 
to each other, and each of them is separated from the fore lateral 
eye on its side by an interval equal to its diameter ; the front row of 
eyes is much the shortest, and, looked at from above, straight. 
The /egs are not very long, but tolerably strong; their relative 
