82 GENERATIVE OEGANS. 



longtemps inconnue; le hasard seul, en rendant mi 

 observateur tcmoin d'un acconplement, pourra faire 

 decouvrir leurs organes genitaux, niais un pareil hasard 

 est difficile a prevoir/' I quote this sentence as an 

 excuse for tbe numerous details in the anatomy of 

 Smynthurus, which I have left unascertained ; but I may 

 add that the small size of Smynthurus gave me less 

 difficulty than its curious form and the extreme delicacy 

 of its internal organs. By opening the animal, how- 

 ever, as above mentioned, I was able several times to 

 make out the vagina above described, and also to trace 

 it to the vulva, which is situated between the anus, 

 and the base of the saltatory apparatus, as is shown in 

 Pis. LVII, LYIII A, and in PL LXIII, fig. 11. 



The only accessory organs which I could find were 

 two small, glandular, rounded bodies attached to the 

 vagina close to the orifice. They were '0055" in width, 

 and shaped like a kidney, with the convex side in front. 

 On the posterior side of each, that is to say, near the 

 vulva, is a dark brown rounded mass, about '003" in 

 diameter. Beyond their relative position, I did not 

 make out the relation which these organs bore to one 

 another, or to the vagina. 



The eggs are laid either singly, or in batches of 

 from fifty to a hundred. In the cases observed by me 

 they were spherical and smooth ; according to Nicolet, 

 however, " ils sont tantot oblongs ou ovo'ides, tantot 

 spheriques ou en spheroide aplati de deux cotes ; leur 

 couleur est generalement pale, ou plutot blanche, mais 

 legcremcnt lavee de bleu, de jaune, de rose ou de 

 violet, selon les especes. Leur transparence permet de 

 suivre jusqu'a un certain point le developpement de 

 I'embryon. La membrane exterieure est lisse dans 

 la plupart des especes, pointillee ou reticulee dans 

 quelques unes ; dans ce dernier cas, les oeufs sont 

 parfois velus ; garnis de polls longs et serres ; d'autres 

 sont plutot epineux que velus, les epines longues, flexi- 

 bles et un pen frisees comme de la laine, affectant toutes 

 les formes et toutes les directions, sont larges a leur base 



