602 REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. [June 20, 



to Trochosa eft'era, Cambr. : it may, however, be distinguished by the 

 first row of eyes being distinctly shorter than the second, and by the 

 marking of the falces, which in the present species are yellow, or 

 orange-yellow-brown, with a longitudinal, well-defined, dark reddish- 

 brown band, which runs in front from their base to their extremity, 

 and appears to continue the broad dark brown bands running through- 

 out the length of the cephalothorax and including on each side the 

 lateral eyes of all the three rows. The rest of the cephalothorax is 

 yellow ; the central yellow band is abruptly constricted at the hinder 

 part of the caput, whence it narrows gradually to the hinder extremity 

 ot the thorax. On the caput this band has two longitudinal parallel 

 brown lines, which are often imperfect, and sometimes obsolete. 



The eyes of the front row are very small (the centrals not very 

 much larger than the laterals), and separated by as nearly as pos- 

 sible equal intervals; the laterals of this row are seated on strong 

 tubercles, and have a rather downward direction ; the height of the 

 clypeus equals a diameter of the central eyes ; the ocular area is not 

 much longer than broad ; and the length of the hinder row does not 

 very much exceed that of the middle row. 



The legs are yellow, immaculate, excepting in some (evf examples 

 where the femora show a very faint trace of dusky annulations. 



The maxillcE and labium are yellow, the latter clouded with brown 

 towards and at its base ; the sternum also is yellow, with two or 

 three indistinct dusky longitudinal markings. 



The abdomen is of a rather elongate oval form, its colour varies 

 from yellow to pale yellow- brown ; and the ordinary Lycosid markings 

 are more or less distinctly traced by blackish brown broken lines 

 and spots, the spots extending in broken oblique lines over the 

 sides ; the abdominal pattern in this, as in almost all other species 

 of the family, is often greatly obscured by the hairs with which it is 

 covered ; immersion in fluid, however, brings out the pattern distinctly. 



Eight or nine examples were found near Alexandria. 



TARENTULA TREMENS, Sp, U. 



Adult female, length scarcely 4 lines. 



Cephalothorax dull orange-yellow, clothed with yellowish grey 

 adpressed hairs ; a broad brown longitudinal band occupies each 

 side, leaving a narrower yellow marginal one and a much broader 

 central one ; the latter is sharply dentated on its inner margins at 

 the hinder part of the caput, the foremost denticulation represent- 

 ing the ordinary constriction, where the lateral dark bands break in 

 upon the ceutral pale one ; this in the present Spicier is almost of 

 uniform width from the eyes to the beginning of the hinder slope, 

 which is not excessively steep, forming an angle of about 45°. 



The eyes of the front row form a line perceptibly shorter than 

 those of the second row ; the centrals of the second row are a little 

 larger than the laterals, and the interval between them is rather greater 

 than that between each and and the lateral eye nearest to it ; those 

 of the second (or middle) row are very large, and separated from 

 each other by scarcely a diameter's interval ; and yet the line formed 



