118 ARANEIDEA. 
This fine species is apparently abundant throughout Central America. The immature 
forms are much more highly coloured than the adult, their legs being very distinctly 
annulated with black, When the specimen is dry, however, and probably in a natural 
state as well, this contrast of colours is almost lost beneath the grey pubescence, 
Noticeably also in this species the vulva assumes a variety of forms, apparently fully 
developed, in the immature examples. The horseshoe-shaped area is the first to appear, 
in the form of a pair of dark opposing crescents. 
4. Selenops minutus, sp. n. (Tab. VIII. figg. 19, 19a-c, g ; 20, 20a, 2; 
20 5, var., 2 .) 
Type 3, cotype 9, in coll. Godman & Salvin. Total length, ¢ 5, 2 8 millim. 
3 2. Carapace pale orange. Legs and sternum dull orange-yellow. The legs are tinged with dusky brown, 
while the femora have on the outside an irregular longitudinal dusky-brown streak. Abdomen dull 
yellow, with black markings, very variable in shape and extent. The paler forms exhibit a dusky central 
dorsal line, which expands laterally behind, while the margins of the abdomen have a few scattered spots 
of brown. In the darker forms the central bar is much darker and more extended behind, leaving a 
transverse sinuous pale bar in the form of an inverted W. The sides of the abdomen are much more 
deeply suffused with brown. 
The four central eyes form a strongly recurved row, the anterior centrals somewhat smaller ; anterior laterals 
very minute and inconspicuous, situated nearer the posterior laterals than to the posterior or anterior 
centrals. 
3 palpus: external apophysis at the apex of the tibia bibranchiate ; the upper branch slightly clavate, the 
lower curved, simple, and semitransparent. Tarsus nearly circular, strongly produced on the outer side 
at the base. The palpal organs are furnished on the inner side with a long lamelliform process curving 
outward and pointed at the apex. On the outer margin of the bulb is a small sinuous process. 
Q vulva (apparently not quite fully matured in any of the specimens). (See Tab, VIII. fig. 20 a.) 
Hab. Guatemaa (Sarg). 
5. Selenops morosus. 
Selenops morosa, Banks, Proc. Calif. Acad. Sci. (3) i. p. 267, t. 16. fig, 14°. 
2. Total length 17 millim. 
Hab. Mexico, Tepic!. 
I have not seen a specimen of this species. 
Fam. HETEROPODIDA. 
Eyes eight, in two more or less parallel transverse rows, ‘Legs laterigrade. Carapace and abdomen somewhat 
compressed as a rule. Apex of protarsi without a hard chitinous rim, but furnished with a trilobate 
membrane; the central lobe triangular, the lateral lobes rounded. 
The last-named character separates the Heteropodide from all other Clubionid 
_ spiders, as well as from the Selenopide. Otherwise the spiders belonging to this family 
are simply Clubionids with a peculiar life-habit which has tended to modify their 
leg-movements. ‘hey run with great speed, clinging flat to the surface over which 
