426 Dr. Kidd on the Anatomy 



The testicles of the male are situated similarly to the ovaries 

 of the female, and are not very unlike in general appearance 

 to the ovaries of young females : they differ however in being 

 divided pretty deeply into several unequal lobes, the free ex- 

 tremities of which look towards each othei-. They send out 

 each a very fine capillary tube or duct ; which, descending to- 

 wards the rectum, is in one part of its passage convoluted on it- 

 self so as to resemble the human epididymis partially unravelled. 

 The excretory duct above described terminates at the bot- 

 tom of a thick pouch, which is situated between the rectum 

 and the ventral integuments, and in form is not very unlike, 

 though larger than the uterus, opening externally, as the uterus 

 does, under the posterior margin of the last but one of the 

 ventral segments of the abdomen. 



The interior mechanism of this pouch is extremely curious ; 

 for in the upper part there is contained an apparatus some- 

 what in the shape of a coronet, of the colour and hardness of 

 tortoise-shell : and at right angles to the centre of this there 

 is fitted a similarly hard and horny substance (in shape resem- 

 bling a short flat club) which descends towards the external 

 opening of the pouch. 



Behind the pouch are situated, one on each side, two oblong 

 white bodies, which are twisted into three spiral coils, and 

 then terminate by an inflected tube at the upper and back part 

 of the pouch. These bodies evidently answer to the vesiculce 

 seminales of insects in general ; and resemble in their external 

 character, and in their white pulpy contents, that oval body 

 which is placed at the back of the uterus. There is also an- 

 other pair of vesiailce seminales, as is frequently the case in 

 insects, situated exteriorly to the former; more slender in 

 form also, and much more convoluted, which apparently ter- 

 minate near the points where the ducts of the testicles termi- 

 nate. In the instances of full developement these bodies are 

 enlarged to six times their usual size. Under the circum- 

 stances of full developement there is also found, though scarcely 

 perceptible under imperfect developement, a large spherical 

 mass, resembling a ball of eider down, situated immediately 

 at the anterior edge of the pouch above described, and con- 

 tinued on from its substance. 



The examination of the mole-cricket has added, as appears 

 from the description of the parts, another exception in the 

 case of the female as well as the male to the general statement, 

 that in insects the sexual organs pass out by the anus. Cu- 

 vier mentions, as the only exceptions to this law, the luli and 

 Libelhda.* 



* Begne Animal, torn. iii. p. 137 



Castins 



