14 
MYGALIDiE. 
Genus ATYPUS (. Latreille ). 
Eyes closely grouped on a protuberance at the anterior part of the cephalo-thorax ; three 
on each side describe a triangle whose vertex is directed forwards, and the other two, which 
are the largest, are placed transversely between the triangles. 
Maxillae long, divergent, dilated at the base, where the palpi are inserted, and pointed at 
the extremity. 
Lip small and somewhat oval. 
Legs moderately long; the fourth pair is the longest, a little exceeding the first in 
longitudinal extent, and the third pair is the shortest. 
Atypus Sulzeri. PI. I, fig. 1. 
Atypus Sulzeri, Latr., Gen. Crust, et Insect., tom. i, p. 85, tab. 5, fig. 2. 
— — Hahn, Die Arachn., Band i, p. 117, tab. 31, fig. 88. 
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. vii, p. 256. 
— — Koch, Die Arachn., Band xvi, p. 72, tab. 562, figs. 1547, 1548. 
Oletera atypa, Walck., Hist. Nat. des Insect. Apt., tom. i, p. 243, pi. i, fig. 5. 
— picea, Koch, Uebersicht des Arachn. Syst. erstes Heft, p. 35. 
Length of the female, |ths of an inch; length of the cephalo-thorax, fth, breadth, |th ; 
breadth of the abdomen, §th; length of a posterior leg, 5 7 B ths; length of a leg of the third 
pair, T 5 6 ths, 
This spider has a large cephalo-thorax, of a remarkable form; it increases gradually in 
breadth from the posterior to the anterior part, is truncated in front, and somewhat convex in 
the region of the eyes. The falces are powerful, very prominent, greatly curved on the upper 
part, armed with some strong teeth on the under side, and have three small, obtuse processes 
near the base of the fang. The lip is situated below a protuberance near the base of the 
maxill®, which are fringed with red hairs on the inner surface. The figure of the sternum is 
semicircular. The legs and palpi are provided with hairs and spines, and the two superior 
tarsal claws are pectinated. These parts are glossy, and of a reddish-brown colour. The 
abdomen is oviform, the posterior part being rather the broadest; it is sparingly clothed with 
hairs, glossy, and of a dark-brown colour, faintly tinged with red ; the two superior spinners 
are long, prominent, and have the spinning-tubes distributed on the inferior surface of the 
terminal joint. 
The male is smaller than the female; it is much darker coloured also, and has on the 
upper part of the abdomen an oval, glabrous, coriaceous space, which extends about half-way 
