288 



small, and differ very little in relative size ; the four central eyes 

 form nearly a square, whoso fore-sido is tho shortest ; the latoral 

 pairs are placed noar tho base, on the outer side, of the protuber- 

 ances. Tho posterior row has the very slight convexity of itscurve 

 directod forwards, and the interval between those of the central 

 pair is greater than that between each and tho lateral eye next 

 to it. The clypeus projects forwards, and its height exceeds half 

 that of the facial space. 



Legs moderatoly strong and tolerably long, much longer in 

 the males than in the females; relative length 1.2.4.3. Those 

 of 1 and 2 differ but very little, and similarly in regard to 4 

 and 3. Spines occur beneath the metatarsi, and the anterior 

 portion of the tibiae of the first and second pairs. 



Palpi short. Digital joint of the male large. Abdomen 

 narrow, and truncated in front, enlarging gradually to a con- 

 siderable width behind, where, at either corner of tho upper 

 side is a short, blunt, conical protuberance ; hinder extremity 

 steep and rounded in the female ; less steep, and sub-angular, in 

 the male. In this genus, and in fact in almost all the Thomisides, 

 there are five circular points, or impressions on the upper side of 

 tho abdomen, forming an elongated triangle whose apex is in front. 



The relative size of tho sexes is very disproportionate. One 

 spocies only has, as yet, been found in England, and that one has 

 been met with in Dorsotshiro. 



THOMISUS ONUSTUS. 



Thomisus ONUSTUS, Walck., Tabl. d. Aran., p. 32. 



,, abbeeviatus, Walck., Ins. Apt. 1, p. 516, and Blaclao., 

 Spid. Great Brit, and Irel., p. 90, pi. iy., 

 fig. 54. 

 The length of the female varies from 3^ to 5 lines, and that 

 of the male from 1£ to 2 lines. 



The colour of the cephalo-thorax (of the female) is yellow- 

 brown on the sides, with a narrow, white, lateral margin ; the 

 upper side forms a broad, longitudinal, yellowish-whito band, 

 including the eyes and conical protuberances; this band is 



