1()2 



A)niuls Enlu})wlo;4ic(il Society of America [Vol. III. 



THK MORE (JENHRALIZKl) TVIMCS OF I'ALPI. 



In all spiders the external openinj^ of the re])roductive organs 

 of the male is on the lower side of the adbomen near its base, 

 in the epigastric furrow. Some time before pairing the seminal 

 fhiitl is emitted from this opening and is stored in a tubular 

 cavity in an api)endage of the last segment of the jjalpus, where 

 it is retained until the pairing of the sexes, and from which it 

 then passes to the spcrmatheca? of the female. As the object 

 of this paper is purely morphological the details of this trans- 

 ference of the sperm will not be discussed here; the reader is 

 referred to the recently published papers by Montgomery 

 ('03 and '10) for a review of the subject and for an account of 

 original observations. 



'i(.. 1. Tarsus of Filislala hihenialis; 

 1. lateral aspect; 2, cblique view; 

 3, mesal aspect. 



Fui. 2. l)iaL;rani ( f ili<- ri(i'pt:ii kIumi 

 scminis. 



The genital a])i)en(iagc of the paljjus oi the male is exceed- 

 ingly comi)licate(l in structure in the more specialized spiders, 

 as in the Argio])ida'; but it is comparatively simple in some of 

 the more generalized families. A few illustrations of the sim- 

 l)lcr forms will be given here. 



Till-: FiLisT.-VTA Tvpf: of Palihs. — In Filislata liihenialis, 

 which is a very common house spider in the South, is found the 

 most simi)le ty])e of male i)alinis that I have seen among spi- 



