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papilla or as papillae, into wbicli ruu at least two rery large sen- 

 sory cells (fig. 16}. In addition to these cells, and near them, 

 are found large ganglia composed of some twenty to thirty cells ; 

 their connections I was, however, unable to follow. These ganglia 

 were very conspicuous in all four coxae of the last two pairs of legs, 

 but the long sensory cells I succeeded in finding only iu one leg. 

 I had not sufficient material to pursue the investigation further. 

 All important sensory organs discovered on the legs of Arachnids 

 are of interest as perhaps throwing light on tbe origin of the 

 " raquets " of Galeodes and the " combs " of Scorpio. 



Croneberg further describes a tubular sac, which he takes to 

 be a gland opening at the tip of the movable joint of the pincers 

 on the pedipalps. I have not succeeded in finding such a struc- 

 ture, but Croneberg' s description reminds one of the invagination 

 at the tip of the pedipalps of Galeodes, which is probably 

 olfactory *. 



I have made no special observations on the nervous system. 



The Genital Glands. 



The general form of the female organ is already well known. 

 The chief point of interest, morphologically, is the union of the 

 paired ovaries to form, with the oviducts, the ring characteristic 

 of so many Arachnids. There is no such fusion in Galeodes, 

 which is probably in this respect prinjitive, while, on the other 

 hand, there are many bridgings between the two glands in 

 Scorpio, which is thus more specialized in regard to its repro- 

 ductive system than any other Arachnid, except perhaps some 

 Acarids. As a matter of fact, the genital glands seem to develop 

 wherever they can, filling up the spaces left by the intestinal 

 diverticula. We have a kind of struggle for existence between 

 two organs in the same body, which, however, cannot from 

 the nature of the case be a war of extermination, but rather 

 an effort to attain the relative proportions most advantageous 

 for the race. 



My material was, unfortunately, quite insufficient to work out 

 the problems connected with the sexual glands. 



The arrangement of the sexual apparatus seemed to be some- 

 what complicated, although not so complicated a3 Croneberg 



* " On the Terminal Organ of tlie Pedipalp of Galendea" Ann. & Mag. Nat. 

 Hist., Jan. 1S93. 



33* 



