212 ARANEIDEA. 
supernumerary spinners, divided in two and placed transversely. The genital aperture is simple, 
consisting only of a narrow transverse linear opening. 
The male resembles the female nearly in colours and markings; the central longitudinal band on the cephalo- 
thorax is much constricted in the middle ; and the triangles on the abdomen are all connected with the 
lateral stripes; the tibise, metatarsi, and tarsi of the legs of the first pair were missing, though, judging 
from the length of the femora, these legs are much the longest. The annulations on the legs were 
fainter than those of the female. 
The palpi are long; the radial joint is nearly three times the length of the cubital, increasing gradually in 
strength to the fore extremity, very slightly curved, and clothed with long coarse hairs towards the 
tip. The digital joint is exceedingly small, of a cup or socket form, into which the base of the palpal 
organs fits; these consist of a simple rounded bulb, drawn out gradually into a long, tapering, curved, 
sharp-pointed process. 
The maville have a spine at their extremities as in the female, but rather stronger. 
Hab. Guatema.a, Valley of the Motagua and San Antonio (Sarg). 
In the different proportion of the ocular area and different curvature of the posterior 
row of eyes, from that laid down by M. Simon as the generic type (‘ Histore naturelle 
des Araignées,’ pp. 254 & 258), this species is strongly aberrant, but there seems to be 
nothing at present to justify its exclusion from the genus filistata. 
AGRIOGNATHA, gen. nov. (Epeiride). 
(Tetragnatha, Cambridge, ad partem, antea, p. 144.) 
Cephalothorax longer than broad, moderately convex above; caput and thorax about level, lateral marginal 
impressions at the capat moderate ; normal indentations between the caput and thorax strong, as also is 
that at the thoracic junction; anterior margin angular. 
Eyes subequal, occupying the whole width of the fore part of the caput, and in three well-separated groups ; 
the central quadrangle is rather longer than broad, and slightly narrower behind than infront. The fore- 
central pair are seated on a slight prominence, as is also each of the lateral pairs; the hind-centrals are 
in a straight line with the lateral pairs, so that a transverse line passing through the former would just 
go between the laterals, which are contiguous to each other on either side. The posterior row is slightly 
curved, the convexity of the curve directed forwards; the anterior row strongly curved, with a similar 
direction of the curve. The interval between the hind-centrals is equal to an eye’s diameter, being 
half that which separates each from the hind-lateral eye on its side. 
Legs very unequal in length, 1, 2, 4,3; moderately strong; spines on all, excepting on the tarsal joints, 
tolerably numerous and moderately strong. 
Falces long and strong, divergent and projecting. 
Mawille rather long, divergent, much the broadest at the extremity, the corners of which are angular. 
Labium as broad at the base as high, rather decreasing in width to the apex, which is rounded; the height of 
the labium is a little less than half the length of the maxille. 
Sternum short, heart-shaped, not much longer than broad. 
Abdomen somewhat cylindrical; spinners very short, compact, of equal length. 
This genus is nearly allied both to Pachygnatha, Sund., and Tetragnatha, Latr., and 
appears exactly to connect the former (which has strong affinities with the Theridiide) 
with the latter, which is equally connected with the Epeiride. The eyes are like those 
of Pachygnatha, while the maxille are very similar, though much shorter, to those of 
Tetragnatha. ‘The sternum is, however, very dissimilar to that of the latter. The 
difficulty of including it within either of these generic limitations was felt in the 
