428 Mil. J. BLACEWALL ON SOME TUSCAN SPIDEES. 



pectinated, and the inferior one is inflected near its base. The palpi 

 are soot-coloured ; the cubital and radial joints are short, the latter 

 being the broader ; the digital joint is oval, convex and hairy exter- 

 nally, concave within, comprising the palpal organs, which are highly 

 developed, prominent, and provided with a long curved spine. The 

 abdomen is subcylindrical, glossy, projects a little over the base of the 

 cephalothorax, and is of a black hue ; a series of minute white spots 

 forms a transverse row near its posterior extremity ; and there is a spot 

 at the base of the coccyx, and another on each side of the spinners, of 

 the same hue. 



Theridion delicatum, n. sp. PI. XVI. fig. 11. 



Length of the male ^2 i"- '> length of the cephalothorax j^^, breadth 

 ' ; breadth of the abdomen ^^j ; length of an anterior leg ^''4 ; length 

 of a leg of the third pair -,. 



The eyes, which are seated on black spots, are disposed on the anterior 

 part of the cephalothorax in two transverse rows ; the four interme- 

 diate ones form a square, the two anterior ones being the largest and 

 darkest of the eight ; the eyes of each lateral pair are placed obliquely 

 on a minute tubercle ; they are the smallest, and are almost in con- 

 tact. The cephalothorax is oval, convex, glossy, with slight furrows 

 on the sides converging towards an indentation in the median line ; 

 the falces are conical and vertical ; the maxillaj are obliquely truncated 

 at the extremity, on the outer side, and inclined towards the lip, 

 which is triangular ; the sternum is glossy, convex, and heart-shaped ; 

 the legs are long, slender, and provided with hairs ; the first pair is 

 the longest, then the second, and the third jjair is the shortest ; each 

 tarsus is terminated by three claws ; the two superior ones are curved 

 and minutely pectinated, and the inferior one is inflected near its base. 

 These parts have a pale-yellowish hue; an obscure dusky band ex- 

 tends along the middle of the cephalothorax, and its narrow lateral 

 margins are soot-coloured ; the base of the lip, and the extremity of 

 the metatarsi are soot-coloured; and the lateral margins of the sternum, 

 and some very minute spots distributed over its surface have a black- 

 ish hue. The palpi are short, and resemble the legs in colour; the 

 radial joint, which is much larger than the cubital, is crescent-shaped 

 and fringed with long hairs; the digital joint has a short, broad, oval 

 form ; it is convex and hairy externally, concave within, comprising 

 the palpal organs, which are very highly developed, complex in struc- 

 ture, of a dull-yellowish hue, tinged with red, and are encircled by a 

 black, filiform spine that has its origin in a central prominence ; these 

 organs are directed obliquely upwards, the digital joint being situated 

 below them. The abdomen is oviform, glossy, convex above, and 

 projects over the base of the cephalothorax ; it is of a yellowish- 

 white colour, the sides being rather the darkest, and a pale-brown. 



