286 PROFESSOR ROLLESTON ON THE 



dissected in the preparation there drawn ; and Leuckart' speaks of similar outgrowths 

 heing developed in the vagina of the Banxring {Cladobates, sp. ?) during pregnancy ; 

 whilst in the ordinary Ruminants and the Llama {Auchenia glama), figured by Carus [1. c. 

 fig. 5), they are confined to the corpus uteri. In the common Pig {Sus scrofa) similar 

 processes to those in the Tenrec are to be seen occupying a similar situation^ 



There is in the Tenrec a short corpus uteri above the closed portion of the sexual 

 canal. Of the two cornua opening into it, the left one is three inches and a half long, 

 and the right four inches. In the left cornu there were contained four foetuses, and, in 

 addition to the utero-placental areas corresponding with them, there were two patches of 

 tumid mucous membrane over and above, indicating apparently that two additional ova 

 had been attached there and aborted. There was one similar patch in the right cornu, 

 together with eight foetuses. In all, therefore, as many as fifteen ova had been im- 

 pregnated ; three had aborted, and twelve might have been brought to the birth. As 

 many as twenty-one young ones are said to have been brought forth by the Tenrec at 

 one time : it has twenty-four mammae ; but the number of mammae and the number of 

 foetuses are by no means alwaj's in exact correspondence in the class Mammalia. 



From the neighbourhood of the ovary a stout fibrous band passes upwards to lose 

 itself in the peritoneum, lying exteriorly to the kidney, and in relation with the dia- 

 phragm. This structure is to be seen in most female Mammalia ; and a band, with homo- 

 logous connexions, exists in many male Mammalia, both of " testicondous " and of other 

 orders. It has been seen by me in the Tamandua {Myrmecophaga tetradactyla) and in 

 the Pteropus, and also in the foetus at full time of the Pigtailed Monkey {Macacus 

 nemestrinus) and in the Human subject at the age of fifteen months, in each case 

 attached to the caput majus epididymis. It is, no doubt, the remnant of the ligamentum 

 cUaphragmaticum, figured by Kolliker (fig. 215, Entwickelungsgeschichte, 1861) as con- 

 necting the Wolffian body and the generative gland of the early embryo with the struc- 

 tures in relation with the diaphragm. 



There'is no ligamentum rotundum in the Tenrec ; and indeed we should not expect 

 to find such a structure in a species the male members of which have the testes per- 

 manently lodged in the position in which they are primarily developed'. The rudiment, 

 however, of the ligamentum diaphragmaticum is often found coexisting with the liga- 

 mentum rotundum, as, for example, in the Hedgehog {Erinaceus eurupceus), and conse- 

 quently it cannot be, as has been asserted'', the homologue of it. 



In the Tenrec the ligamentum diaphragmaticum is continued onwards from the 

 region of the ovary on to the uterine cornu, constituting thus a " ligamentum ovarii " 

 of anthropotomy. Upon the compound cord thus constituted the ovary is not quite 



' Vergleichende Anatomie und Physiologic, von 0. Bergmann uiid R. Leuckart, 1855, p. 627. 

 ° Tiie same condition obtains in the Rhinoceros and in the Elephant. (See ' Hunterian Catalogue,' iv. 2775 

 2777 a.) 



' C. G. Carus, I. c. tab. ix. fig. 2. ' Phil. Trans. 1850, p. 516. 



