MICRATHENA. 03) 
17. Micrathena inzqualis, sp. n. (Tab. L. figg. 20, 20 a-d, 2.) 
Type, 2, in coll. Godman & Salvin. Total length 8 millim. 
General characters similar to those of JZ. gludiola, except that the cephalic and thoracic regions are separated 
by a transverse depression and the sternum is not markedly convex in the central area, Abdomen with 
a pair of short, sharp, slightly divergent, anterior marginal spines, a pair of minute lateral marginal 
cusps situated rather behind the middle, and a pair of subequal spines on each posterior angle, the lower 
branch of what is really a bifid spur being slightly smaller. The vulval scape has a transverse cavity in 
front, and is convex, with a wedge-shaped tongue, see Plate. 
Colour: abdomen with a yellow anterior marginal transverse band, a more or less broken lateral marginal 
band, a pair of adjacent, reniform, central, anterior dorsal blotches, and a large transverse-oval posterior 
dorsal blotch, the latter having a broad branch running out on each side to the base of the posterior 
spines. Between these spines and, the spinners, behind, lies a series of transverse broken bands or 
definite rows of blotches. On the lateral area are four or five broken transverse bands running down to 
the spinners. The markings, however, are very variable. 
Hab. Guatemata, Volcan de Fuego (Sarg). 
Mr. Sarg gives the colour of the abdomen as “ chrome-yellow, polished, shiny, with 
numerous indentations of intense black set in blotches of duller black; the posterior 
spines burnt sienna; underside black, with yellow-spotted lines crossing the segments.” 
18. Micrathena subspinosa, sp.n. (Tab. LI. figg. 17, 17 a-c, 9.) 
Type, 2, in coll. Godman & Salvin. Total length 6 millim. 
This species is almost precisely similar to Mf. 12-spinosa in general character, but the third, lower, cusp on 
the posterior bifid spur is remote from the two main cusps in the middle of the spur behind, and thus 
becomes trifid. The posterior margin of the vuiva, though presenting a minute median angle, has not a . 
tongue-like prominence which is noticeable in JZ, 12-spinosa. 
Colour: similar to that of M. 12-spinosa, the posterior spurs dark brown, apically black. 
Hab. Guaremata, Ayutla (Sarg). 
19. Micrathena 12-spinosa. (Tab. LI. figg. 18, 18 ac, 2.) 
Acrosoma 12-spinosum, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 63, t. 8. figg. 12, 
12 a-e (¢)*; Keyserl. Spinn. Amer., Epeiride, p. 18, t. 1. figg. 14, 14a,b(2)*; Banks, 
Proc. Calif. Acad. Sci. (8) i. p. 250°. 
Type, 2, in coll. Godman & Salvin. Total length 5°75 millim. 
Characters similar to those of M. gladiola, except the following: carapace convex and raised behind the 
central thoracic fovea, which, together with a lateral cephalic fovea on each side, is deeply marked ; 
sternum not markedly convex in the middle; patelle of legs much dilated behind, with a groove above 
the dilatation; abdomen with a pair of short sharp spines on the anterior angles, very wide apart and 
divergent, two median lateral marginal spines on each side, and a stout trifid cusp at each posterior 
angle, the central spur the longer, the upper next in length, the lower the smallest, slightly depressed in 
a forward direction. 
The vulval scapus is similar in general character to that of the allied species, consisting of a transverse convex 
chitinous bar, concave in front, its posterior margin produced into a characteristic median triangular 
prominence. 
Hab. Mexico, Tepic (fide Banks*); Gvatemata?, Sakiydc (Sarg); Panama, 
Bugaba (Champion *). 
