84 
Psyche 
[December 
Spines. There are many prominent spines on the legs but those 
which seem to be the most distinctive are : First tibia with seven pairs 
of long, fairly robust, ventral spines (Fig. 2) ; first metatarsus with 
ventral spines 0-2-2-2-lr-lr-lp. Second tibia with ventral spines essen- 
tially as in first but with more irregularity; second metatarsus with 
spines essentially as in first but also with more irregularity. Third 
tibia with three pairs of these robust spines; third metatarsus with 
ventral spines 02-2-2. Fourth tibia with ventral spines 2-2-2; fourth 
metatarsus with four pairs of ventral spines very irregularly placed. 
Prolateral and retrolateral robust spines easily confused with ventral 
spines. Calamistrum apparently absent. Tarsal scopulae well de- 
veloped on tarsi one and two but less well developed on tarsi three 
and four. Metatarsal scopulae moderately well developed on meta- 
tarsi one and two but absent from three and four. All tarsi with 
well developed claw tufts. 
Palp. Relatively simple; closely similar to that of A. spinigerus 
Kerserling from Central America. Details best shown in Figures 3-5. 
Tibia with robust distal retrolateral apophysis ; with two long slender 
dorsal spines near proximal end and a similar prolateral spine near 
proximal end. Patella with dorsal spines as follows: 2-0-1 (extremely 
long and slender). Hairs on tibia extremely long and stiff. 
Abdomen. Somewhat ovate with widest part about one third of its 
length from posterior end; 5.85 mm. long and 3.575 mm. wide at 
widest part. With a pair of dorsal depressions a little behind the 
middle. With three pairs of spinnerets, all short but with anterior 
pair the largest and the middle pair the smallest. With cribellum 
obscure and poorly developed. 
Color in alcohol. Carapace with a broad, median, nearly uniformly 
light stripe. On each side of the posterior half of the median thoracic 
groove there is an elongated dark spot. The whole area lateral to 
the median light stripe is brownish. Between the PLE there are 
four narrow stripes formed by light grayish hairs. The chelicerae are 
irregularly striped with brownish ; in front at the outer proximal 
corner there is a narrow stripe of grayish hairs. Abdomen : the dor- 
sum is brownish, much lighter in the middle in the dorsal half. There 
is also a group of four light colored tufts of long hairs in the posterior 
quarter. The whole ventral area, sternum, and venter is uniformly 
yellowish. The legs are generally brownish dorsally and yellowish 
ventrally. 
