44 



THE CLASS OF INSECTS. 



or fertilizing fluid, contains 



V 



of a duct, the dwti($ i'j<_-nlt<n-ntx. which opens into the external 

 intromittent organ. This duct extends backwards, connecting 

 with the rw'cttlH'. ,wntiii<iI< j N, which lead by 

 the fiiwt, dcferentia to the testvs (Fig. .">.">). 

 The latter are usually rounded glandular 

 bodies, (sometimes, as in Melolontha and 

 J.iiniiiiix. numbering six on a side. These 

 organs lie in the abdominal cavity, usually 

 above and ou each side of the alimentary 

 canal. 



The sperm, 

 very active 

 spermatic par- 

 ticles which 

 are developed 

 in large cells 

 in the testes, 

 where thev are 



Fig. 53. 



united into bundles of various 

 forms. 



In the female, the internal re- 

 productive organs (Fig. 54) are 

 more simple than those of the 

 other sex. The external open- 

 ing of the female is situated at 

 the end of the oviduct, that 

 leads by two tubes to the ovary, 

 which consists of two or more 

 tubes (in the Queen Bee one hundred and sixty to one hundred 

 and eighty) in which the ova are developed. On the upper side 



FK;. 53. Male organs of Athaliu centir'nliir. h, the penis, or external portion, 

 in which the diiftns ejucitlatoriint (/) terminates, which extends backwards, and is 

 connected with the rexicula- sx-mlntilvs (e), and rasa deferentia ((/) which are con- 

 nected with the epidiiti/mis (6), and the t<-sti>s (ti). i and I, two pairs of horny plates, 

 .surrounded by a horny ring (/.). i, horny prehensile hooks attached to /. //;, two 

 elongated muscular parts inclosing the penis (/<). From Newport. 



FK;. 54. Female organs of generation of Aflutlui. centifnUte. a, b, c, the eighteen 

 ovarial tubes originating from each of the two oviducts (?), and containing the im- 

 mature eggs;/, the spermatheca; g, poison-sac, the poison being secreted in the 

 secretory vessels h. The poison flows through the oviduct into the sting and thence 

 into the wound made toy the Sting. 10, the terminal ganglia of the nervous cord. 

 From Xcirport. 



Fig. 54. 



