266 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Genotype.— Horioctenus lycosoides, sp. nov. 
Readily distinguished from Caloctenus and Odo, both occurring in 
the Andean region, in having but a single tooth on the lower margin 
of the chelicera, as well as in eye relations and characters of legs. 
Hor1I0cTENUS LYCOSOIDES,! sp. nov. 
Plate 21, fig. 2-4. 
Integument of carapace dark brown with a median longitudinal 
yellow or light testaceous stripe from the eye-area to the caudal 
margin; this median stripe anteriorly as wide as the eye-area from 
where it first widens and then narrows again and remains of nearly 
uniform width to the posterior declivity down which it narrows to 
the caudal margin; also a narrow paler supramarginal stripe along 
each side; carapace clothed densely with chiefly light grey or white 
hairs, dark hairs much sparser. Sternum dusky chestnut, the labium 
similar excepting at the tip, the endites paler, all these parts clothed 
with grey hair like that of the carapace. Legs brown, irregularly but 
abundantly, especially the femora, streaked and spotted with black- 
ish; hair chiefly grey but with stiffer dark bristles more abundantly 
intermixed than on the carapace. Abdomen with the integument 
brown, a sagittate outline in some vaguely indicated at the base 
above, this followed by a series of equally vague cross-marks; densely 
clothed with grey and coarser brown hairs intermixed. 
Posterior row of eyes longer than the anterior; very strongly 
recurved; median eyes but little larger, separated from the laterals 
by about their diameter, only half as far from each other. Anterior 
row of eyes decidedly recurved both in dorsal and in anterior view, 
the median eyes being borne well forwards; eyes equidistant, less 
than their radius apart; median eyes smaller than the laterals (ratio 
of diameters about as 4:5). 
Labium clearly wider than long (23:19); sides convex, decidedly 
converging to the rounded or mesally truncate anterior margin; 
basal notches short, (Plate 21, fig. 2). 
Endites not impressed. 
Palpus strongly spined; claw with five teeth. 
Teeth of upper margin of chelicera rather slender, decreasing from 
1 Lycosa, eidos, form. 
