68 
THOMISIM. 
joints of its palpi are so tumid as to indicate that it has only to undergo its final change of 
integument before it arrives at maturity. 
As there does not appear to be the least necessity for adopting the genus Xysbats, 
proposed by M. Koch, to which he has transferred this and some other species of British 
Thomisi, the generally received method of arrangement has been adhered to m this 
instance. 
Thomisus cristatus. PI. IV, fig. 38. 
Thomisus cristatus, Walck., Hist. Nat. des Insect. Apt., tom. i, p. 521. 
_ _ Latr., Gen. Crust, et Insect., tom. i, p. 111. 
_ _ Sund., Vet. Acad. Handl., 1832, p. 217. 
_ Blackw., Annals and Mag. of Nat. Hist., second series, vol. vii, 
p. 448. 
_ pini, Hahn, Die Arachn., Band i, p. 26, tab. 8, fig. 23. 
_ viaticus, Hahn, Die Arachn., Band i, p. 35, tab. 10, fig. 29. 
_ ulmi, Hahn, Die Arachn., Band i, p. 38, tab. 10, fig. 30. 
_ lateralis, Hahn, Die Arachn., Band i, p. 40, tab. 10, fig. 31. 
Xysticus mordax, Koch, Uebers. des Arachn. Syst., erstes Heft, p. 25. 
_ viaticus, Koch, Uebers. des Arachn. Syst., erstes Heft, p. 25. 
__ _ Koch, Die Arachn., Band xii, p. 70, tab. 412, figs. 1003, 1004. 
_ ulmi, Koch, Uebers. des Arachn. Syst., erstes Heft, p. 25. 
Length of the female, 1th of an inch; length of the cephalo-thorax, Ath, breadth, iVtli; 
breadth of the abdomen, ^ths ; length of an anterior leg, ^ths ; length of a leg of the third 
pair, 1th. 
The legs are robust, and are furnished with hairs and spines; the first and second pairs, 
which are decidedly the longest, and equal in length, have the tibim and metatarsi supplie 
with two longitudinal rows of strong spines on the under side, and the third pair is re 
shortest; they are of a dull, reddish-brown colour, streaked with yellowish-white, and spotted 
with brownish-black; each tarsus is terminated by two curved, pectinated claws. The palpi 
are short of a dull, reddish-brown colour, with strong spines on the cubital, radial, and digi a 
joints, and a curved, pectinated claw at their extremity. The cephalo-thorax is large, roun e 
on the sides, slightly compressed before, broadly truncated in front, sloped towards e 
anterior part, and more abruptly so towards the base; it is provided with a few, 
scattered, strong, black hairs, particularly on the anterior part, an is o a u , 
reddish-brown colour, mottled with yellowish-white; the margins, a transverse line 
situated between the two rows of eyes, and a large bifid mark m tie mi e w ose 
divarications extend to the posterior eyes, are of the latter colour. ie 
short, strong, vertical, and have a reddish-brown hue. The maxillm are convex near the 
base, ■ and the lip is triangular, but rounded at the apex. These parts, with the sternum, 
which is heart-shaped, are of a reddish-brown colour, obscurely mottled with yellowish-brown, 
