ARGYROEPEIRA.—HUBBA. 231 
The female measures 3 lines in length. It closely resembles the male in colours and markings; the cephalo- 
thorax is proportionately narrower, the indentations between the caput and thorax stronger, and the caput 
is larger in proportion; the underside of the abdomen is suffused with a golden hue, and the straight 
transverse golden stripe beneath is of an angular form, the space between it and the two silver spots being 
silvery. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
This spider is closely allied to Argyroepetra hortorum, Hentz, but may be distinguished 
from it (among other characters) by the central quadrangle of the eyes being as wide 
(or even a little wider) in front as behind, whereas in A. hortorum it is distinctly 
narrower in front than behind. The palpal organs also of A. hortorum are different in 
structure, and the genital aperture of the female is differently shaped. 
The presence in this spider of the hairs on the hinder femora, thought to be 
distinctive of Opas (antea, p. 184), and also of similar hairs in A. hortorum, Hentz, show 
that in this respect there is no difference between Opas and Argyroepeira. The total 
absence, however, of spines on the legs of the former still separates them. 
HUBBA *, gen. nov. (fam. Theridiide). 
Cephalothorax broad-oval, length and breadth almost equal, broadest and round at the hinder part ; general 
convexity moderate; normal grooves and indentations almost obsolete; the whole of the caput (in the 
male sex) gradually drawn out or elevated into a strong eminence projecting forwards, enlarged at the 
upper extremity (where the eyes are situated) and divided there into two obtuse segments, of which the 
anterior is largest and projects forwards. 
Eyes large, arranged in four pairs—three on the posterior and one on the anterior segment of the caput. 
The eyes of the central pair, on the posterior segment, very nearly contiguous to each other, as are 
also those respectively of each of the other two (or lateral) pairs; these three pairs are almost equal 
in size. The anterior pair are smallest, placed at the fore corners of the anterior segment of the caput, and 
widely separated from each other. 
Legs (from what remained—the third and fourth pairs only) moderate in length and strength; those of the 
fourth pair longest, furnished apparently with hairs only ; the tarsi of the fourth pair not much more 
than half the length of the metatarsi. 
Falces small, straight, vertical. 
Mazille moderately long, broad and strong at the base, tapering somewhat to a point at the extremity, and 
greatly inclined over the labium, which is broader than high and rounded at the apex. 
Sternum large, broad-heart-shaped, very convex, the posterior extremity very wide and obtuse. 
Abdomen rather large, oval; upper convexity moderate ; a large coriaceous quadrate plate, in the middle of the 
fore part underneath, includes the normal spiracular openings. Spinners short, compact, the four exterior 
ones of the same length, the inferior pair strongest. 
Hubba insignis, sp. n. 
Adult male, length 3 line (about 1-5 millim.). 
The colour of the cephalothorax, falces, maxille, and sternum is orange-yellow ; the legs rather paler, with 
the tibia and metatarsi slightly suffused with brownish ; a group of recurved hairs directed backwards 
between the fore-central eyes. 
The eyes are on black spots, and all, excepting those of the fore-central pair, are bright pearly-white. The 
posterior row is very slightly curved, the convexity of the curve directed forwards, the straight line of the 
* Nom. propr. 
