684 The American Naturalist. [July, 
until 1868, when Dr. H. C. Wood again described it? from specimens 
collected in Nebraska and Texas. Bibliographical references to it 
have also since been published by Professor L. M. Underwood? and 
myself.* 
It is a little strange that this species does not occur in collections of 
Phalangiide from North Carolina and Alabama, kindly sent me by 
Professor Geo. F. Atkinson. As already noted, Say says it is not un- 
common in the Carolinas and Georgia. Dr. Wood says of his Texas 
and Nebraska specimens:  ** The form just described has been recog- 
nized as P. nigrum Say, but as there are some slight disagreements 
with the description of that authority, and the localities are widely 
separated, it is possible that it is a distinct species." My specimens 
are undoubtedly the form described by Wood, and if another species 
should be discovered in the region mentioned by Say—agreeing with 
his brief description and differing from the Western form—the latter, 
of course, would have to be re-named. 
This species may be described as follows : 
Male (plate).—Body, 6 mm. long; 3.5 mm. wide; Palpi 4 mm. 
long. ELS HE D. IL, 180m. ; IIL, 1x mm.; IV. 1 
Black : Ventrum of cephalothorax (including coxa), trochanters, 
and base of femora, brown. In some specimens the apical portion of 
the legs and more or less of the ground color of the dorsum is brown- 
ish black. Dorsum thickly studded with small hemispherical black 
granules or tubercles. Segmentation of abdominal scutum indicated by 
faint impressed lines. Eye eminence longer than high ; not canalicu- 
late; covered with black tubercles like those on the dorsum. Palpi 
biek, except coxal joint, which is brown; all the joints slightly 
surface of abdomen brownish black, granulate. Genital organ *'slen- 
der, proximally sub-cylindrical, then flattened and slightly expanded, 
then rapidly expanded into a broad, somewhat circular, very thin, alate 
portion, then suddenly contracted and bent at an obtuse angle, end- 
ing in a very fine point.” 5 
Female.—Body, 9 mm. long; 5 mm. wide. Legs, I., 11 mm. ; II., 
20 mm. ; IIL, 11 mm. ; IV., 19 mm. Besides its larger size, it differs 
from the male in having less black on the ventral surface, which is 
? Communications Essex Institute, VI., pp. 34-35. 
3 Canadian Entomologist, XVII., p. 168 
* Bull. Ill. St. Lab. Nat, Hist., III., p. ros. 
5 Wood, /. c. 
