C)Q Miscellaneous. 



Punlosa, Pfihujra, Ih'lioj.haum. Throe otlu-r ponera examined 

 ciiino from OL'gs found uiukT stones without tlio adult fcnuih's. 



My results differ in eerlain jioinls from those obtained hy Clapa- 

 rt'de for Li/cosa. The rair.iticatioiis of the aorta are indeed such as 

 were observed by tliis author, liut the recurrent branch arising from 

 the oeiihalic arteries conducts the globules into a lacuna occupying 

 the median portion of tho upper face of the cephalothorax, and 

 ■nhich is not, as was supposed, an actual gutter ; the ghjbules which 

 circulate in it from the front towards the rear, returning from the 

 ophthahnic lacuna?, form a sort of sheet spread out beneath the 

 integument ; then, overflowing at the sides without following any 

 definite route, they unite with the currents which skirt the lateral 

 portions of the cephalothorax. In the .Saltigrad;e, in which the 

 latcro-posterior eyes are very large and jjlaced well behind the 

 others, the globules which have circulated round these eyes arrive 

 at the central lacuna by following real gutters. Between the 

 median anterior eyes glolmlcs are observed to penetrate between 

 these organs to g.an the sternal face of the cephalothorax. 



In young spiders which have already undergone the first ccdysia 

 and are still fransi)arent other ramifications of the cephalic arteries, 

 not remarked liy Clai)arcde, may be observed in the cephalothorax. 

 These canals, which communicate with the recurrent branch of the 

 cephalic artery, of which mention has been made above, carry the 

 globules back towards the posterior portion of the cephalothorax ; 

 at ceitain points of their course globules may even be observed as 

 they rise from the depth of the organs. The arrangement of these 

 canals is the same in all the genera studied, except in the Salti- 

 gradiB, where it is slightly different. The appearance of these 

 ramifications, which do not exist immediately after the animal is 

 hatched, is highly interesting, since it shows that if, in consequence 

 of the exclusive study of young spiders, the arterial system of these 

 creatures has been considered as being verj' slightly ramified, it is 

 nevertheless susceptible of complication and of attaining in the adults 

 the development which the researches of 31. Blanchard, confirmed 

 by those of M. Schneider, have demonstrated. 



In the appendages the globules of the arterial current follow one 

 another in narrow file. The venous current is broader and forms a 

 sort of sheet beneath the integument on the extensor side ; it may 

 be temporarily subdivided by muscular masses. 



In all the genera which I examined I found the sternal In-anches 

 of tho pedal arteries, which open into the transverse sternal lacunar. 

 In the median sternal lacuna the globules come from the deep 

 parts chiefiv through a sort of notch, corresponding to the interval 

 between the second and third pairs of limbs. Of these globules 

 some go towards the rear, and the rest towards the front, to empty 

 themselves at last into the transverse lacuiue and rejoin the venous 

 currents returning from the appendages upon the sides of the thorax. 



It seems, moreover, fli.'if the route followed hvthe globules of the 



