158 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 
bristles, double rows of spines are on the under side of the femora, longer and stronger on 
the sides. Tibia-II is curved, and its apical joint (Fig. 2a) provided with strong, thick, 
black clasping spines, with several strong ordinary spines; also a decided conical projection 
or tooth with a corneous tip, which, from the indentation thereon, would appear to be the 
seat of a strong spine. A strong curved spur marks the apex of coxa-I, next the tro- 
chanter; coxa-II has a toothed cone on the middle of the base; coxa-IV a toothed cone 
on the base underneath. The abdomen is very heavily covered with bristlelike hairs, 
which are arranged in a heavy tuft upon the base. The ocular quad appears to be rela- 
tively a little longer than in the ferffile, presenting thus more the figure of a rectangle 
than a square. The palpal digit (Fig. 2b) is dark brown, and distinguished by a palm 
shaped claw projecting from the side outward. 
DisrripuTiIon: I haye a female of this beautiful species from Salt Lake, Utah (Professor 
0. Howard), and a male from Wisconsin (Professor Peckham), and from California (Mr. 
Curtis). Dr. Marx has a specimen from the District of Columbia. Professor Packard 
found a specimen as far north as Labrador. Emerton collected it on Mt. Washington, 
N. H., where it is common along the large slopes of Bear Rock; and it has been found 
on Mt. Lincoln, in the Rocky Mountains. It is a European species which prevails among 
the Alps. 
No. 16. Epeira carbonarioides Krysrrtina. Plate V., Fig 9. 
1892. Epeira carbonarioides, Keysrriinc. Spinnen Amerikas, Epeiride, p. 206, tab. x., 152. 
FrmatEe: Total length (two specimens), 10 (8) mm.; abdomen, 5.5 (5.2) mm. long by 4.5 
(3.6) mm. wide; cephalothorax, 4.5 (3.2) mm. long by 3 (2.7) mm. wide. Under the above 
name Count Keyserling has described a species from Western North America which strongly 
resembles Epeira carbonaria. His description does not distinctly indicate the differences 
between the two, and at this writing Plate X. of his work upon which this species is 
figured is not in hand. I am somewhat doubtful whether the integrity of the species can 
be maintained, having but a single pair, but it is a good variety at least, as indicated by the 
following differences: In Carbonarioides the ocular quad is slightly wider behind than in 
front, while in Carbonaria the relative lengths are reversed, the front being, if anything, the 
wider. The female is not so heavily covered with strong gray bristles as Carbonaria, partic~ 
ularly upon the cephalothorax and around the face, though this may be an individual differ- 
ence. The brown annuli upon the legs of Carbonarioides are much wider relatively than 
upon specimens of Carbonaria observed by me; so much so that the joints appear dark 
brown with narrow yellow annuli, rather than yellow with brown annuli, The epigynum 
of Carbonarioides, though resembling that of Carbonaria in the single specimen in hand, is 
much narrower at the base, and, indeed, is relatively smaller throughout. The dorsal folium 
also differs somewhat, though this may well be an individual difference. In the male the 
palpal organs appear to show decided difference ; tibia-II of Carbonarioides appears to be 
relatively longer, not so much thickened at the apex, and scarcely so numerously provided 
with heavy denticulate spines. The cox of Carbonarioides, male, are distinguished by 
strong spurs and cones; the spurs upon the apical margin next the trochanter of coxe-I, 
II, III, IV, strongest in I. The cones appear, at the bases of coxee-I, where they are low 
down and directed towards coxs-II; on II, upon the lower surface, directed downward ; 
and in the same position on III; on IV it is low down and directed toward coxee-III. 
The maxille are also distinguished by slight protuberances or swellings upon the inner 
margin. 
CrpHALoTHoRAX: Corselet a rounded oval, somewhat narrower toward the front; suf- 
ficiently high ; caput not depressed ; the fosse a semicircular pit; corselet grooves not prom- 
inent; cephalic suture distinct ; the whole a glossy yellowish brown, the caput being yellow; 
surface not heavily pubescent, but some gray hairs on the caput (the pubescence in the 
alcoholic specimen has evidently been partly worn off). The sternum shield shaped, some- 
