308 ARANEIDEA. 
MALLOS *, gen. nov. (fam. Dictynide ; subfam. Amaurobiine). 
Cephalothoraa long, narrow, oblong-oval ; lateral marginal indentations at the caput slight but distinct. Caput 
long, the normal thoracic indentation being a long way back, deep, and transverse. Upper convexity 
moderate. Caput not raised, broadish, and truncate before; height of the clypeus less than half that of 
the facial space. 
Eyes of nearly equal size, in two transverse curved rows occupying the whole width of the caput; the posterior 
row is nearly straight, the convexity of its very slight curve directed forwards; the curve of the anterior 
row (which is nearly equal to the posterior in length) much stronger, but in the same direction. The 
intervals between those of the posterior row are equal. The central quadrangle forms a square, except 
that its fore side is a little shorter than the rest, and its eyes divided by a diameter’s interval, being nearer 
to each other than to the fore-laterals. The lateral pairs are each on a strong tubercle, and placed a little 
obliquely, the interval between them being rather less than half a diameter of the anterior eye. 
Legs moderately strong, not very long, 1, 2, 4, 3, without spines or strong bristles, with fine hairs only. 
Terminal tarsal claws 3, dentated: superior long, strongly curved, rather slender ; inferior short and stout, 
with some small opposed supernumerary ones beneath. Tarsiof 1st pair long, those of 4th pair very short. 
‘ales tolerably strong, straight, vertical; some minute teeth in a longitudinal row visible along the inner 
margin in front of the fang when at rest. 
Mawille moderately long, broad, obliquely and a little roundly truncate at the extremity, considerably inclined 
towards the labium. 
Labium broader at the base than high, of a somewhat subtriangular form, rounded on the sides, considerably 
truncated at the apex, and a little longer than half the length of the maxille. 
Sternum short-oval, a little longer than broad, broadly truncate before, and drawn out into a rather blunt 
point between the coxee of the fourth pair of legs. 
Abdomen oval, blunt at each end, moderately convex above ; spinners strong, rather long, extended in a line 
parallel to the abdomen, those of the inferior pair a little longest and strongest, the central pair very 
small and difficult to see; the infra-mamillary organ is undivided and occupies the whole width of the 
abdomen close to the inferior spinners, where it forms a raised transverse ridge with the top truncated ; 
anal prominence long, prominent, pointed ; just in front of this organ is a strong, somewhat curved, con- 
spicuous transverse fold in the epidermis, apparently covering one or two entrances to spiracular organs ; 
this fold is fringed in front with white hairs. 
Mallos niveus, sp. n. 
Inmature male, length 13 lines. 
Cephalothoraa pale brownish-yellow ; caput behind the ocular area deep brown; sides of the thorax brownish, 
with dark brown converging dashes ; margins of the thorax of a well-defined vivid white. Clypeus and 
occiput furnished with longish, coarse, grey-white hairs, some forming a straight, longitudinal, median 
streak from the middle of the ocular area to the thoracic indentation. 
tulces pale brownish-yellow, the basal portion yellow-brown. 
Legs pale yellow, furnished thinly with very fine pale hairs, a few coarse darker ones at the anterior extremity 
of the metatarsi and tarsi; at the fore extremity, in front of the metatarsi, is a roundish or oval impression, 
with a deep reddish-brown corneous edge, perhaps the “ lorum articulare” of M. Simon (Hist. des Araign. 
p. 22); a strong calamistrum runs along nearly the whole length of the hinder side of the metatarsi of the 
fourth pair. 
Palpi pale whitish-yellow, short, the still tumid and undeveloped digital joint of large size. 
Macille pale yellowish, with a stain of yellow-brown on the inner side near the extremity. 
Labium yellowish-brown. 
Sternum dark brown, the margins black, clothed thinly with coarse grey-white hairs. 
Abdomen white above, clothed with grey-white hairs, clouded with grey in a dentate form, and with two or 
three blackish stain-like spots on it along the lateral margins; a longitudinal black marking, broadest 
pehind, occupies the median line of the fore end; this mark is deeply indented on each side towards the 
* Nom. propr. 
