216 ARANEIDEA. 
22. Sidusa conspecta. (Tab. XVII. figg. 6, 6 a-c, ¢; 7, 7 a-g, 2.) 
Escambia conspecta, Peckh. Occas. Papers Nat. Hist. Soc. Wise. iii. 1, p. 42, t. 3. figg. 8, 3d (¢), 
8 a, b,c, e (2) (April 1896) *. 
Type ¢, gynetype 2, in coll. Peckham. Total length, ¢ 7, 2 9 millim. 
Hab. Mexico, Teapa, Orizaba (H. H. Smith); Guatema.a, Eastern district 1 (Sarg) ; 
Costa Rica (fogers). 
Of this species we have numerous males and females in our collection. There can 
be no doubt, owing to the excellent figures of Emerton, that they belong to S. conspecta 
(Peckh.). 
93. Sidusa alacris. (Tab. XVII. figg. 8, 8a, 2.) 
Escambia alacris, Peckh. Occas. Papers Nat. Hist. Soc. Wisc. iii. 1, p. 46, t. 3. figg. 5,5 @ (9) 
(April 1896) °. 
Type, 2, in coll. Peckham. Total length 7 millim. 
Yarapace brown (but the pubescence is more or less obliterated in our specimen), with a white spot in front 
of the lateral posterior eyes and a posterior white marginal band. Abdomen very distinctly marked with 
a large, pale orange, oblique shoulder-spot, followed by a central pale band, resolving itself into a series of 
pale chevrons, to the spinners, with a pair of white spots nearer together about midway, and four white 
spots further apart, in the apical half; lateral area brown; ventral area pale, suffused with sooty brown. 
Legs brown, mottled with spots of white hairs, 
Small eyes midway between the laterals ; tibia and protarsus i. with lateral spines on both sides; tibie iii. 
and iv. with a small dorsal basal spine. Vulva consisting of a pair of large, slightly longitudinal, oval 
discs, in contact along their inner margins, about a quarter of their diameter from the genital rima, with 
a dark spot near the centre connected with a circular internal duct. 
Hab. Guaremata, Eastern district 1 (Sarg). 
24, Sidusa circumcincta, sp. n. (Tab. XVII. fig. 9, 2.) 
Type, 2, in coll. Godman & Salvin. Total length 4 millim. 
Carapace black-brown; cephalic area margined with a slight band of scattered white hairs and a posterior 
marginal band of the same. Abdomen brown, with two slender transverse lines of white hairs across 
the anterior dorsal area, followed by a straight transverse white line (or narrow band) just behind the 
middle, and a short oblique white band just above the spinners on each side, Legs brown (tarsi paler), 
mottled with white hairs. 
Tibia i. with lateral spines on the inner side; protarsus i. with lateral spines on both sides; tibis: iii. and iv. 
with a small dorsal basal spine. Vulva consisting of a transverse-oval area, about its own diameter from 
the genital rima, with a pair of circular discs, terminating behind in a somewhat pear-shaped form, 
curving outwards, in contact on their inner margins, being the two normal posterior spermathecal spots, 
the anterior discs having a dark central spot connected with a spiraloid internal duct. 
Hab. Mexico, Teapa (H. H. Smith). 
25. Sidusa quadriguttata, sp.n. (Tab. XVII. figg. 10, 10a, 2.) 
Type, 2, in coll. Godman & Salvin. Total length 7 millim. 
Carapace brown, clothed with white hairs, with a pale posterior central and a broad pale marginal band. 
Abdomen brown and dull white, mottled, with a central pale band, resolved into five or six pale chevrons, 
to the spinners, and four white spots set in brown patches, the first pair smaller, the second pair larger 
