206 Transactions. — Zoology. 



Lycosa cerescens, n. sp. 



Mas. — Length, 9|- mm. 



Cephalotborax greenish-brown, with a pale-yellow fleck on the 

 caput behind each posterior eye, and a heart-shaped fleck of the 

 same hue behind the junction of the caput with the thorax ; 

 lateral margins pale-yellow, with a fleck or two of brown ; 

 thoracic fovea reddish ; falces reddish-brown ; lip and maxillae 

 palish-brown ; sternum brown ; legs and palpi yellow, with 

 brown extremities, and a few brown flecks on the femora, 

 patellae and tibis ; abdomen above of the same hue as the 

 cephalotborax, with a median longitudinal band of palisli- 

 yellow, bordered on each side by an irregular streak of brown, 

 and extending from the base to a point somewhat beyond the 

 middle, where the brown borders diverge, and thence towards 

 the spinners crossed by short bars of brown ; at the sides greyish 

 mottled with brown ; below reddish-brown, with two longitudinal 

 rows of very minute brown spots, extending from behind the 

 genital aperture to near the spinners. These spots are due to 

 minute bald depressions in the integument. The whole body is 

 rather densely covered with a fine pale pubescence. 



Cephalothorax about 1 mm. longer than broad at its broadest 

 imrt, not qi;ite so long as the patella + tibia of a leg of the 

 4th pair, less than 2 mm. wide at the inferior margin of the 

 fore part of the caput, and considerably narrower than this at 

 the top in front. 



Front row of eyes slightly bent backwards, small, centrals 

 slightly larger than the laterals, and nearer to those than to 

 each other ; eyes of middle roAV distinctly larger than those of 

 the hind row, and separated from the fore-laterals by about the 

 diameter of one of the latter. The hind row is the longest, but 

 the fore and middle row do not difi'er much in length. The 

 eyes of the hind and middle row and the laterals of the front 

 row are placed on black spots. 



Falces long, somewhat convex and slightly diverging towards 

 the extremities ; groove toothed on both sides — on the under- 

 side 3, and on the upper side 2 teeth, the posterior one 

 being the smallest on each side. Claw moderately long and 

 slender. 



MaxillcB convex, increasing gradually in width from the base 

 to the anterior extremities, slightly rounded on the outside, and 

 almost truncate in front, where tiiere is a very dense tuft of hair 

 on the inner angle of each. Lip about lialf as long as the 

 maxillae, tumid at the base, then slightly constricted, then 

 widening to near the middle, then becoming slightly narrower 

 towards the anterior extremity, which is truncate. 



l<ternum cordate, glossy, and convex, 



Ahdonen ovate, about as wide as and about 1 mm. longer 

 tliau tho cephalothorax ; spiuuers compact and moderately pro- 



