386 Prof. E-einhardt on Emballouuva canina. 



in this genus may be only a sexual distinction ; but this is dis- 

 proved by an examination of the British species^ where the pecu- 

 liar form of each is constant in all the individuals that have been 

 examined. 



Before quitting the subject of Kellia rubra I wish to take the 

 opportunity of mentioning that Dr. Turton was the first to point 

 out the viviparous character of this species, which he announced 

 in his ' British Bivalves/ p. 258, twenty-seven years ago. 

 I am, dear Sir, yours very truly, 



Joshua Alder. 



XLII. — Description of a bag-shaped, glandular apparatus on a 

 Brazilian Bat, the Emballonura canina of Pr. Maximilian. By 

 J. T. Reinhardt. 



During a recent sojourn in the Brazils I collected, in the inte- 

 rior of Minns Geraes, numerous specimens of a small species of 

 bat (the Emballonura canina, Pr. Maxim.) which is there very 

 common, and which attracted my particular attention from the 

 fact of its having its wings provided with a small bag-like ap- 

 pendage similar to that noticed by Mr. J. E. Gray* and by Pro- 

 fessor Kraussf in the species of Saccopteryx. 



On my return to Europe, I saw, from the aimual report of the 

 natural history of the Mammalia for the year 1846 by Professor 

 A. Wagner J, that this organ had already been discovered on the 

 very same species of bat by the late Dr. Natterer, and that the 

 learned Professor had published drawings of it in his ' Beitrage 

 zur Kenntniss der Saiigethiere von America,^ published in the 

 * Abhandlungen der Konigl. Bayerischen Academic der Wissen- 

 schaften, \^^^ Band, 1^*^ Abth. 1847.' 



Two figures {loc. cit. tab. 4. figs. 6 & 7) being all that is to be 

 found in the above-named work, there being no description in 

 the text, I have thought it right to publish my observations con- 

 cerning this organ, which are founded on the examination of a 

 large number of specimens, both alive and immediately after 

 death. 



On examining in the Emballonura canina, that part of the 

 alar membrane which extends to the thumb, along the fore-edge 

 of the upper and lower arm, we find on the back a fissure lead- 

 ing to a small cavity in the interior of the membrane, in which 

 is secreted a reddish, greasy matter, of a strong, somewhat 

 ammoniacal smell. The aperture is at a distance of about 

 3 lines from the insertion of the alar membrane on the back : the 



* Ann. and Mag. of Natural History, vol. xvi. p. 279. 



t Erichson's Archiv fiir Naturgeschichte, Band 1. )). 178. t. 6. 



X Erichson's Archiv, 1847, B. 2. p. 13. 



