living in the Island of Madeira. 153 



The abdomen is oviform, a little broader posteriorly than in 

 front, where it projects slightly over the end of the cephalo- 

 thorax ; it is convex above, and thickly covered both above and 

 below with short hair, of a brownish-grey colour, plentifully 

 marked with small black spots. About the middle of the upper- 

 side is a pair of closely approximated black spots, having the 

 shape of right-angled triangles, and so disposed that the vertical 

 side of each is next the median line. Behind these, on the me- 

 dian line, is a series of triangular black spots, which have their 

 apices pointing forwards, and their posterior angles more and 

 more produced laterally as they approach the hinder extremity 

 of the abdomen. The first of these spots is the largest, and its 

 apex is truncated. The apical portion of the hinder ones be- 

 comes gradually less. At each side of this median series are 

 some groups of black spots, forming blotches of irregular shape. 

 Along the middle of the underside is a broad longitudinal black 

 band, which narrows behind. The spinnerets and sexual organs 

 are black or deep brown. 



The male resembles the female, except that it is smaller, the 

 abdomen shorter, the legs of the third pair proportionally longer, 

 and the colours more decided. The following are the dimensions 

 of an adult male and female in parts of an inch : — 



Length li. 



Length of cephalothorax 



Width „ „ 



Width of the abdomen 



Length of a leg of the 4 th pair. 

 Length of a leg of the 3rd pair . 



This handsome spider may be at once distinguished from the 

 great Lycosa of Deserta Grande (L. ingens, Blackw.) and from 

 that of Porto Santo {L. tarentuloides maderiana, Walck.) by the 

 Y-shaped mark on the cephalothorax, and by the black trian- 

 gular spots on the upperside of the abdomen. From the former 

 it may be further distinguished by the orange marks on the 

 palpi and legs, and from the latter by the black and grey annuli 

 on the legs, and by the eyes of the first row being nearly equal 

 in size, whereas in the Porto-Santan spider those forming the 

 middle pair of that row are decidedly larger than the other two. 



Examples were first obtained by me three or four years ago, 

 from holes in a rock in the lower part of the ravine of S. Jorge, 

 on the north side of the island of Madeira. Others have been 

 lately obtained by Frederick Pollock, Esq., from banks of earth 

 covered with moss, in two localities upwards of 2000 feet above 

 Eunchal, on the south side of the island; and my description 



