124 ARANEIDEA. 
smallest. The four central eyes form a square. The interval between the eyes of the fore-central pair 
is equal to a diameter, and that between the hind-central pair is double that between each and the hind- 
lateral eye next to it. The hind-central eyes are on the flat surface of the caput, the rest on slight 
eminences. The eyes are all dark-coloured. The clypeus is prominent below, and its height is equal to 
one and a half diameters of one of the fore-central eyes. 
Falces moderate in length and strength, their profile strongly curved. 
Legs moderately long, not very unequal in length, slender, 4, 1, 2, 3; the two posterior pairs strongest ; 
terminal tarsal claws 2? (owing to a dense claw-tuft these cannot be satisfactorily made out). They 
are armed with a few rather long slender spines, some of which are arranged in pairs beneath the tibie 
and metatarsi. The coxe of the fourth pair are contiguous. 
Palpi long ; digital joint somewhat clavate, its length rather exceeding that of the radial and cubital joints 
together. 
Masille strong, slightly divergent at the upper extremity, and obtusely and rather roundly truncated. 
Labium short, less than half the length of the maxille; the outer margins curved and the apex truncated. 
Sternum heart-shaped. 
Abdomen short-oval, broader and deeper behind than before, connected by a short but distinct pedicle with 
the thorax, the pedicle arising from a short sheath-like prominence on the abdomen. Spinners short, 
strong, compact, those of the superior pair two-jointed, the terminal joint very short. Immediately in 
front of the spinners is a rather large, conspicuous, transverse opening protected by a prominent lip, and 
no doubt leading to a spiracular organ. 
Myrmecotypus fuliginosus, sp. n. 
Adult female, length slightly over 3 lines. 
Cephalothorax black, clothed thinly with prominent pale greyish hairs, a few of which on the ocular area and 
clypeus are stronger than the rest, and symmetrically placed; on the anterior upper surface of the thoracic 
region is a large patch of grey pubescence. 
Legs clothed with greyish hairs and spines (as noted among the generic characters). Those of the first and 
second pairs have the femora and tibiz pale brownish-yellow, striped with deep blackish-brown ; the 
metatarsi dark brown, the tarsi paler. The other two pairs are dark brown. 
Palpi dark brown ; digital joint paler, furnished with hairs and several spines. 
Falces deep black-brown in front, and furnished with pale bristly hairs. Colour pale yellowish on their inner 
sides: at their extremity just above the fang is a thick tuft of long pale and black bristly hairs forming a 
strong fringe close in front of the falces. 
Mavwille black-brown, margined at their extremity and on their inner side with whitish. 
Labium black-brown, the apex pale whitish. 
Sternum black-brown. 
Abdomen sooty-black ; clothed with erect pale hairs, and a short dense whitish pubescence mixed with a little 
rusty yellowish. On the upper part, rather towards the sides, are several jet-black markings, apparently 
formed by short erect densely set hairs. The genital aperture is black, not very conspicuous, but of 
characteristic form. 
Hab. Mexico, Teapa in Tabasco (4. H. Smith). 
ANYPH//ENA, Sundevall. 
Anyphena simplex, sp. n. 
Adult male, length 3 lines; adult female, length 34 lines. 
The whole of the fore part is of a yellowish colour. 
The cephalothorax is of normal form, marked on the sides with some indistinct converging darkish markings, 
and covered thinly with fine pale hairs. The height of the clypeus does not exceed the diameter of one of 
the fore-central eyes. 
The eyes are compact, small, subequal, placed on black spots in two transverse curved rows, the anterior row 
