MH. J. BLA.CKWALL ON SOME TUSCAN SPIDEKS. 419 



jvntcrior extremity, form a long, narrow angle ; and a red-brown 



spot oecurs at the base of the coccyx. 

 Possibly tlie Spider described above may ultimately prove to 

 be the male of Thomisus amoenus, as the various particulars in 

 which it differs from the female of that species may merely be 

 characteristics of sex. 



TlIOMISUS ELEGANS, H. sp. PI. XVI. fig. 9. 



Length of the male 5 in. ; length of the cephalothorax yVj breadth yV; 

 breadth of the abdomen ^V 5 length of an anterior leg | ; length of a 

 leg of the third pair ^. 

 The cephalothorax is broad, moderately convex, glossy, slightly com- 

 pressed before, rounded in front and on the sides, and has short, 

 black bristles thinly distributed upon its surface, and a series of minute, 

 close-set points on each black lateral margin ; it is of a pale brownish- 

 yellow colour, the medial line being the palest, and has an irregular 

 black band extending from each lateral eye of the posterior row to its 

 base ; a white band occurs on the anterior margin, whose extremities 

 extend upwards to the tubercles on which the lateral eyes are seated, 

 and the region of the intermediate eyes has a brick-red colour. The 

 eyes are disposed on the anterior part of the cephalothorax in the 

 form of a crescent, whose convexity is directed forwards ; they are 

 black, with the exception of the intermediate ones of the anterior row, 

 which have a red-brown hue, and are encircled with yellowish-white; 

 the lateral eyes of both rows are seated on a strong tubercle, but are 

 not in contact, and the anterior ones are the largest of the eight. 

 The falces are cuneiform and vertical ; the maxilla; are convex at the 

 base, obliquely truncated at the extremity, on the outer side, and in- 

 clined tow ards the lip, which is triangular ; and the sternum is heart- 

 shaped. These parts have a yellowisli hue ; a red-brown spot occurs 

 near the extremity of the falces, in front, which, with the maxillae 

 and lip, are tinged with brown, and the sternum, which is much the 

 palest, has a slight tinge of green. The legs are slender and very 

 unequal in length, the first and second pairs being much longer than 

 the third and fourth pairs ; they are provided with hairs and a few 

 spines, have a pale-yellow hue faintly tinged with green, and are 

 marked with a few red-brown annuli, those at the extremity of the 

 tibiae and metatarsi of the first and second pairs being the darkest 

 and much the broadest ; the first pair a little surpasses the second in 

 length, and the third pair is the shortest; each tarsus is terminated 

 by two curved, pectinated claws. The palpi are short, and have a 

 pale-yellowish hue; the radial joint has two apophyses at its ex- 

 tremity, on the outer side ; the upper one, which is much the longer, 

 is bifid at its termination, and the superior process is more pointed 

 and darker-coloured than the inferior one ; the digital joint is oval. 



