1(34 



/{ finals li)itomoloi!^ic(il Society of Anicricti |\'<)1. Ill 



ej. d. ) ; the wall of this duct is often dark in color, which renders 

 it easy to trace the course of the duct in an expanded bulb. 



The tracing of the course of the ejaculatory duct is often the 

 only method l^y which the embolus can be recognized in a com- 

 plicated palpus; for when the embolus is small or when it is 

 lamelliform a slender apophysis may be mistaken for it. Even 

 jMcngc f '()()). who proposed the term embolus for this part 

 labels the terminal ajiophysis as embolus in several of his 

 figures of Epeira. 



.,1. y. 



.,/. 



X 



Fi(.. .'i Paljnis of Hypochilus l/iorelli. 



Fig. 4. Palpus of Loxosceles nifescens. 



There is no reason to believe that the lumen of the recepta- 

 culum seminis communicates with the body cavity; the nirati 

 sdJii^iiinis described by Wagner ('87) do not exist. 



After the stage rejjresented b\' Filistata had been reached, 

 a shifting in the ])osition of the bulb occurred in most spiders. 

 Instead of occupying a terminal position, at the tip of the tarsus, 

 it has moved to one side of the tarsus in all spiders known to 

 me except Filistata. In the tarantulas and in Ily/Mxhilus tlior- 

 elli, the most generalized in many respects of the true spiders, 



