50 



of the cesophagus, and 2 inclies in breadth : the pyloric orifice con- 

 tracted, the duodemim dilated to 1 inch and 2-lOths in circumference : 

 length of the small intestines 2 feet and 9 inches. The cacuin 3 inches 

 in length, curved upon itself, 2 inches and 4-lOths in circumference, 

 and divided by numerous septa. The colon equally large at the com- 

 mencement, but gradually diminishing : at the distance of 7 inches 

 from the insertion of the ileuin it was of small calibre, occasionally 

 dilated, forming sacciili, in vvhich the faecal matter was collected and 

 detained. The reclitm narrovv and uniform in size ; the vvhole length 

 of colon and rectuin 3 feet 8 inches. The kidney of the right side was 

 two-thirds of its length in advance of that on the left : each mea- 

 sured 7-lOths of an inch in its longest diameter, and 4-lOths in 

 width. 



" Some peculiarities observed in these little animals are worthy of 

 notice. The molar teeth, as before stated, presented the singular 

 anomaly of those of the upper jaw being different in their structure 

 and surfaces from those of the lower jaw. The former, in their 

 crowns, are very similar to those figured by M. F. Cuvier, as pecu- 

 liar to his genus Hetamys (Pedetes, Iliig.); vvhile those of the lower 

 jaw somewhat resemble the teeth of the various species of Arvicola. 

 The stomach, in form and pyloric contraction, is likę the šame organ 

 in the Leminings [Lemynus), Jerboas (Dipus), and Gerbilles (Ger- 

 billus). The ccecum resembles that of the Guinea-Pig {Cobaya), 

 /igouti (Dasyprocta), and Marmot {Arctomys) ; while the sacculated 

 form of the colon is found in the common House-Rat {Mus decuma- 

 nus, L.) 



" Both the speciniens possessed by the Society proved to be 

 females. The skin of one has been preserved for the Museum : the 

 bones of the other are in preparalion for a skeleton, and when 

 mounted may probably be the subject of further notice." 



Mr. Yarrell having concluded the reading of his notes, it was stated 

 by Mr. Ogilby, thatsince the time when he had originally mentioned 

 his belief of the identity of the Ctenodaclylus Massonii with the Gundi 

 Marmot, that opinion had been confirmed by a passage in Captain 

 Lyon's Travels in Northern Africa, in vvhich the Gundi is so well 

 described, as to leave no doubt on his mind of its being the šame animal 

 as those presented to the Society by Mr. Warrington. 



Mr. Gray remarked, that the individuals of the Ctenodactylus Mas- 

 so7in which he had described, having been sent from the Cape of Good 

 Hope, he did not suspect their spccific identity with an animal from 

 Barbary, known to science by short and imperfect notes alone, and of 

 \vhich no specimen was recorded as existing in any collection. He 

 added, that the size mentioned by Rohtman.that of a small rabbit, ap- 

 peared to him to be greater than should be attributed to the animal in 

 question ; \vhich, moreover, he could not regard as being of a testa- 

 ceous red colour. In the other particulars mentioned in Rothman's 

 brief description, his Mus Gundi ngreed v^ell with the Ctenodaclylus 

 Massonii. 



A specimen was exhibited of the Olis Kori, Burch., \vhich forms 



