214 Analyses of Books/ [March, 



be, if not impregnated, at least in a state fit for impregnation, I 

 have ventured to derive the character of the impregnated ovum. 



" The Sexual Organs of the Male. 1 had dissected several 

 male gryllotalpse before I was fortunate enough to meet with the 

 sexual organs fully developed ; and while I had as yet met 

 ■with only one animal bearing the character of full developeraent, 

 I was not certain whether I judged rightly of the natural state 

 of those parts; or whether their uncommon degree of enlarge- 

 ment were not the effect of disease — the disproportion in size 

 between the state in which they had hitherl o occurred, and that 

 to which I now allude is so enormous. However, subsequent 

 dissections presenting the same phsenomena, I have no scruple 

 in considering them as indicating fuUdevelopement. 



" 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 extre- 

 mities of which look towards each other. They send out each a 

 very fine capillary tube or duct; which, descending towards the 

 rectum, is in one part of its passage convoluted on itself 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 somewhat 

 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 resembling 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 vesiculae semi- 

 nales 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 another 

 pair, of vesiculas seminales, as is frequently the case in insects, 

 situated exteriorly to the former ; more slender in form, also and 

 much more convoluted, which apparently terminate near the 

 points where the ducts of the testicles terminate. In the 

 instances of full developenient these bodies are enlarged to six 

 times their usual size. Under the circumstances of full deve- 

 lopement there is also found, though scarcely perceptible under 

 imperfect developement, a large spherical mass, resembUng a 



