Mr. J. Blackwall on newly discovered species of Araneidea. 427 



and metatarsi of the first and second pairs ; they are of a brownish- 

 yellow colour, the tarsi having a tinge of red, and are marked 

 with streaks, spot§, and annuli of a brownish-black hue ; the 

 first and second pairs, which are longer and more robust than 

 the third and fourth pairs, are equal in length, and the third 

 pair is the shortest ; each tarsus is terminated by two curved, 

 pectinated claws ; and the short palpi, which resemble the legs 

 in colour, but are very slightly marked with brownish-black, 

 have a curved, pectinated claw at their extremity. The abdomen 

 is broader at the posterior than at the anterior extremity, spa- 

 ringly clothed with short hairs, convex above, and projects over 

 the base of the cephalo-thorax j the upper part is of a dull red- 

 dish-brown colour, with obscure, slightly oblique lines of a paler 

 hue, and is marked with seven minute, indented, yellowish- 

 white spots describing an elongated angle whose vertex is directed 

 forwards ; a short, fusiform line, of the same hue, extends along 

 the middle from the spot forming the vertex of the angle a little 

 beyond the two spots constituting the second pair; the anterior 

 extremity, sides, a space above the spinners, and the under part, 

 are of a pale brownish-yellow colour; on the first there is a 

 curved black band extending to the anterior part of the sides, 

 which are marked with oblique, imperfectly defined, black streaks, 

 and on the posterior extremity spots of the same hue are dis- 

 posed in longitudinal rows ; the under part is minutely spotted 

 with brown, and a brown line on each side of the middle region 

 extends to the spinners, the superior and inferior pairs of which 

 have the second joint of a dark brown hue ; the colour of the 

 sexual organs and branchial opercula is reddish-brown, and im- 

 mediately below each of the latter there is an irregular black 

 spot. 



In February 1858, Mr. R. H. Meade forwarded to me this 

 fine species of Thomisus, which I have named in compliment to 

 Octavius P. Cambridge, Esq. of Bloxworth House, near Bland- 

 ford in Dorsetshire, by whom it was captured in that county in 

 the autumn of 1857. Mr. Cambridge, who is a zealous ento- 

 mologist, having latterly directed his attention to the Araneidea, 

 has discovered several species new to science, and others which, 

 though previously known to arachnologists, had not been re- 

 corded as indigenous to Britain. My thanks are due to Mr. 

 Cambridge for kindly permitting me to give publicity to these 

 discoveries. 



Genus Pasithea, Blackw. 



Eyes eight, unequal in size, disposed in three transverse rows 

 on the anterior })art of the cephalo-thorax ; the two smallest, 

 constituting the anterior row, are near to each other, but not 



