1901. 



sPEUMAXOPHOEES OF BEMIAMIA. 



707 



glands and then to have been transferred to where it is found. 

 This structure, however, is not all of the Bpermatophore. The 

 fully-developed spermatopliore is built up of two pieces, of which 

 the second has apparently the following origin, and has certainly 

 the following characters. Very constantly 1 have found in one 

 or other (not in both) division of the sperm at heeal pouch, in the 

 thin-walled portion into which the duel expands (or rather open-. 

 for the minute structure of the two divisions is different 1. a small 

 cbiti nous case. This appears to have been seen and figured by 

 Michaelsen in Benhamia itiolensis. The structure in question has 

 an outline like a tear-drop (see text-fig. 93, p. 7"-*>) or the pendant 



Text-fie. 94. 



,Sp. 



etion through duel of sperumtheca 1 1' li> iihamin austeni, 

 jpermatophore m position. 



Sp., trail of spermatheca] duct. 



' //.. chitinoue wall of Bpermatophore. 



..I a cut -glass chandelier. Ii is usually, in fact, broader ai one end and 

 narrower al the other, winch i> widely open. This small chitinoua 

 case is gorge J with sperm, and it has been Bomewbal of a problem 

 to me i" understand how ii is that the sperm remains inside. 

 I'or in many instances these small case- were so widely open at 



the bottom — at the end. thai is to say. which is turned toward- the 



spermathecal duct. Why the sperm is not Bhed through beer 



