Mil. J. BLACKWALL ON SOME TUSCAN SPIDEES. 425 



on a minute tubercle, and are almost in contact. The cephalothorax 

 is compressed before, rounded on the sides, convex, glossy, with an 

 indentation in the medial line ; the falces are conical and vertical j the 

 maxillae are obliquely truncated at the extremity, on the outer side, 

 and inclined towards the lip, which is semicircular; the sternum is 

 heart-shaped ; the legs are moderately long, slender, and provided 

 with hairs ; the first pair is the longest, then the fourth, and the third 

 pair is the shortest ; each tarsus is terminated by three small claws ; 

 the two superior ones are curved and minutely pectinated, and the in- 

 ferior one is inflected near its base; the palpi are short, and have a 

 small, curved, pectinated claw at their extremity. These parts are of a 

 pale-yelloMish colour ; a blackish baud, that increases in breadth to 

 its anterior extremity, extends along the middle of the cephalothorax, 

 which has black lateral margins ; the base of the lip is soot-coloured : 

 the sternum has narrow, black lateral margins, and some minute 

 black spots distributed over its surface; and the extremity of the 

 metatarsi and tarsi is soot-colourcd. The abdomen is oviform, very 

 convex above, and projects greatly over the base of the cephalotho- 

 rax ; it is of a dull-white colour finely reticulated with brown, a fine, 

 ramified, pale soot-coloured line extends along the middle of the upper 

 part to the spinners, and on each side of the anterior extremity of this 

 line there is a brownish-black spot; the sides and under part are 

 somewhat darker-coloured than the upper part, the superior margin of 

 the former, which is much the darkest, being strongly dentated; on 

 each side of the medial line of the under part a rather obscure longi- 

 tudinal band, consisting of whitish spots more or less confluent, extends 

 to the spinners ; the sexual organs are moderately developed, and of 

 a brown colour. 



TlIERlDION L^VIGATUM, n. Sp. 



Length of the female ^ in. ; length of the cephalothorax ^^, breadth 

 aV j breadth of the abdomen jV ! length of an anterior leg \- ; length 

 of a leg of the third pair \. 



The abdomen is oviform, rather broader in the posterior than in the 

 anterior region, convex above, and projects over the base of the 

 cephalothorax ; the upper part is of a yellowish-white colour ; at the 

 anterior extremity there is a large, brownish-black, angular mark, 

 having its vertex directed forwards, and from within the angle a short 

 streak of the same hue, whose anterior part is the broadest, extends 

 along the middle ; it is crossed at its posterior extremity by a fine line, 

 whose extremities are enlarged, and to this line succeed two transverse 

 brownish-black bars which are confluent in the middle ; the sides, a 

 space above the spinners, and the under part are of a brownish-black 

 colour, and an irregular, yellowish-white spot occurs on each side of 

 the medial line of the last, not far from the spinners ; the branchial 

 opercuia have a pale-yellow hue, and that of the sexual organs^ which 



