OF THE HORNET. 79 



are two small white bodies about the size and shape of hemp-seeds, 

 sometimes larger and flattened : they He in contact with each other, 

 but may be easily separated : the right is rather higher than the left : 

 they are placed under the second scale, and seemingly not attached to 

 the back. The ducts or vasa deferentia come out from .the testicle on 

 the under side, nearer the upper than the under end, by very small ducts 

 bending downwards, and pass down on the outside of the intestine, soon 

 beginning to swell gradually to three times the thickness. At about half 

 an inch from the testicle is a projection like a small bag or caecum ; the 

 duct from above to this part appears rather opake and shining. Almost 

 close to this bag another caecum arises, on the other side and in an 

 opposite direction, nearly three times as long as the other. This bag is 

 generally more opake than any other part of the duct, and loses the 

 shining pearly appearance ; then diminishes quickly in size and makes 

 a bend upwards, becoming very small ; turns again downwards, and is 

 about the size of a horsehair; is continued into the penis, where it 

 unites with its corresponding duct at the beginning of the penis, and is 

 continued to its end. 



Female Organs of Generation 1 . — The vagina begins or opens under the 

 last scale of the belly, just before the root part of the sting ; so the 

 sting with its muscles, &c. are placed directly between the opening of the 

 vagina and amis. The vagina runs along the inside of the abdomen for 

 some way. As soon as the vagina enters the abdomen there is a bag at- 

 tached to it, similar in situation to that in the female silk-moth, about 

 one-fourth of an inch in length, and the thickness of a pin ; round in the 

 impregnated state, but in the unimpregnated it is flat, thin, and trans- 

 parent, though of the same size. The length of the vagina, from the 

 external opening to the division of the oviducts, is about one-eighth of 

 an inch. It then divides into two duets of the thickness of a hair-pin, 

 which pass on singly for one-eighth of an inch ; then each divides into 

 six oviducts, which are slightly attached by small filaments of the air- 

 vessels and ducts. The ducts appear knotty in some places, and gra- 

 dually diminish till they are insensibly lost. They may be easily 

 separated by dividing the small twigs of the air-vessels by which they 

 are attached. The two divisions pass up distinctly for some way, through 

 which division the largest part of the intestine passes. The ducts di- 

 minish in size, and terminate almost insensibly under the second scale 

 of the back without any seeming attachment. The oviducts lengthen 

 after impregnation in proportion as the ova advance in size ; so that, in 

 a female ready to lay, the oviducts are increased to near six times their 



1 [Hunt. Preps. Nos. 2632-2637.] 



