230 ARANEIDEA. 
Tab. XXIII. figg. 3c and 6d. It seems more than probable that Argyroepeira 
mesomelas, Cambr. (antead, p. 135, t. 16. figg. 3, 3. a-c), from Teapa, Mexico, will 
also eventually prove to be an extreme black variety of A. pulcherrima, Keys. ; I do 
not, however, feel sure upon this at present. 
Hitherto the female only of A. pulcherrima, Keys., has been described. I am now 
able to give a description and figure of the male :— 
Adult male, length 13 lines. 
In colours and markings this sex is like the type of A. (Opas) merens, Cambr., anted, p. 185. The legs 
are furnished with a very few fine spines. The two rows of peculiar long hairs on the femora of the 
fourth pair are longer and stronger than in the female. 
The palpi are short. Radial joint equal in length to the cubital, stronger, and clavate, with several strong 
black bristly hairs in front. Digital joint of moderate size and somewhat oblong-oval form; it has a 
curved obtusely and enlarged ending prominence at its base on the outer side. The palpal organs are 
simple, prominent, consisting of a large short-oval (nearly globular) corneous lobe, under which, beneath 
the extremity of the joint, project two smaller corneous processes closely adhering to each other. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith); Guarema.a (Sarg). 
Argyroepeira auro-striata, sp. n. 
Adult male, length 2 lines. 
Cephalothorax longer than broad, rounded behind; lateral marginal impressions at the caput slight, upper 
convexity moderate ; colour dull orange-yellow. Clypeus equal in height to the diameter of one of the 
fore-central eyes. 
Eyes on black, slightly tubercular spots; general position normal. The four centrals form a quadrangle a 
little longer than broad, its posterior and anterior sides nearly equal, if anything the anterior side 
slightly longest ; the fore-central pair are largest ; the posterior pair looked at from above and behind are 
very nearly straight ; the anterior row strongly curved, the convexity of its curve directed forwards. The 
interval between the hind-centrals is greater than a diameter, and that between each and the hind-lateral 
next to it is less than two diameters. 
Legs long, slender, 1, 2, 4, 3, those of the first and second pairs much the longest, armed with fine but distinct 
spines; along the femora of the fourth pair are the two rows of long bent hairs issuing from minute 
tubercles noted in respect to Opas (anted, pp. 184, 185). Colour like that of the cephalothorax. 
Palpi long, slender; cubital joint short, bent, clavate, somewhat subangular near its fore extremity on the 
upperside, whence there issues a long, straight, tapering, spine-like bristle; radial joint very long, double 
the length of the digital joint, enlarging gradually from the base to the extremity, with some long spine- 
like bristles towards the fore extremity; digital joint narrow-oval, with a strong, prominent, curved, 
obtusely-truncated process at its base directed outwards. Palpal organs prominent, consisting of a large 
oval lobe with a strong corneous process, and a strong, slightly curved, black, pointed spine at their 
extremity. 
Falees moderate in length and strength, slightly divergent, similar in colour to the cephalothorax. 
Mawille, labium, and sternum normal, the latter like the falces in colour, the two former suffused with 
brownish. 
Abdomen oblong-oval, or somewhat cylindric in form; the upper part and sides are silvery, and there is 
a long wedge-shaped dull brownish-grey marking extending from the fore to the hinder end of the 
upperside ; on each side of this towards the fore end are two blunt prominent spots of the same hue, 
and from the hinder part, on each side, two other short oblique lines run backwards. The sides are marked 
with three pretty distinctly marked, parallel, longitudinal, golden stripes on each side ; at the beginning 
of the hinder slope are two distinct silvery spots in a transverse line. The underside has also two other 
similar but more elongate spots in a transverse line a little way in front of the spinners ; the fore end of 
these is golden, and is in contact with a short, straight, transverse, golden stripe ; the area between these 
spots is silvery. 
