152 Mr. J. Y. Johnson on a new Species of Lycosa 



XIV, — Description of a neiv Species of Lycosa livincf in the Island 

 of Madeira; with some Remarks on Lycosa tarentuloides 

 maderiana, Walckenaer. By James Yate Johnson, Corr. 

 Mem. Zool. Soc. 



Lycosa Blackwallii, n. sp. 



The lec/s are long, robust, thickly clothed with hair, and fur- 

 nished with sessile spines ; they are brownish grey, with broad 

 rings of dark brown. The metatarsus and tarsus of the two 

 anterior pairs of legs are black, and the undersides of the other 

 joints are black, or very dark brown. At the distal extremities 

 and on the upper sides of the femur and genua of the first two 

 pairs of legs, as well as at the extremities of some of the joints 

 of the two posterior pairs of legs, there is a patch of orange 

 hairs. Each tarsus is terminated by two curved pectinated 

 claws and a minute simple claw. The fourth legs are the longest; 

 and then come the first, second, and third, the last being the 

 shortest. 



The palpi are rather short, and each is terminated by a curved 

 pectinated claw. The last joint is black or dark brown, and 

 the uppersides of the penultimate and antepenultimate joints 

 are orange. 



The falc^s are powerful, conical, vertical, and armed with a 

 strong curved fang at the extremity, and five or six teeth on the 

 inner surface. The orifice of the poison-duct is conspicuous. 



The maxilla are straight, and have rounded extremities, which 

 are enlarged and obliquely truncated on the inner side. The lip 

 has the middle broader than either its base or apex, and the 

 latter is truncated and hollowed. 



The sternum is oval, polished, and hairy. All these parts are 

 of a deep brown hue, sometimes almost black. 



The cephalothorax is compressed at its anterior part, and 

 rounded at the sides ; it is convex, has a slight longitudinal 

 furrow in the median line, and is densely clothed with short hair 

 of a brownish-grey colour. At each side is a series of brownish- 

 grey suboval spots surrounded by black ; these are more appa- 

 rent in the male than the female. On the median line in the 

 posterior half of the cephalothorax there is a delicate Y-shaped 

 black mark, the fork being directed forwards, and the extremities 

 of the tines being dilated. Posteriorly there are two broad longi- 

 tudinal black bands or blotches, one at each side of the median 

 line ; and these bands are continued upon the anterior part of 

 the abdomen, where they have between them a patch of long 

 orange hairs. 



The four anterior e^jes are equal in size, and form a straight 

 transverse row near the frontal margin of the cephalothorax. 



