12 



E I N A B LÖ XXBERG, 



arcuate and comparatively small, they are shorter both than those of 

 the Saiga and those of the Gapra, only measuring about 8 mm. in 

 length. The breadth of the cricoid cartilage is ventrally or anteriorly 

 9 mm. but the posterior or dorsal shield extends to a length of not 

 less than 33 mm. It has anteriorly a well developed crista. Posteriorly 

 it is continued in a thin flap. The arytenoid cartilage is stout and 

 thick as in the Saiga and has also as that of the latter a considerable 

 nodosity at the external cricoid joint. The larynx of Madoqua has a 

 quite différent shape. It is short, the length of the thyreoid cartilage 

 measuring in the median line 8 mm. and that of the lateral thyroid 

 shields at most 12 Va mm. The pomufn adami is situated close to the 

 posterior margin. Gornua posteriora are short 2 V2 mm. in length by 

 P2 in breadth. They are directed obliquely forwards and a little 

 dorsally. Gornua inferiora are slightly arcuate 5 mm. in length. The 

 cricoid cartilage has no crista but a broadly rounded prominence. 

 The posterior or dorsal shield is 1 1 mm. in length and comparatively 

 broad. In its general shape the larynx of Madoqua is more similar to 

 that of Gapra than to the same of Antilope although the prominentia 

 laryngea is more squarely truncate than in the goat. 



The epiglottis of the Black-buck is triangular with bluntly poin- 

 ted and recurved apex. Its shape is rather similar to that of the 

 Saiga and Gapra although rather more pointed than that of the latter. 

 Plica ary-epiglottica is strongly developed. On the whole the larynx 

 of the Black-buck is most similar to that of the Saiga and the great 

 length of the thyroid cartilage in these animals when compared with 

 the same organ of other ruminants is remarkable and as far as I 

 know only superseded by the same in the Muskox. The septum mem- 

 branaceum of the posterior nasal cavity is veil developed in the Black- 

 buck as in the (inn. but not to such an extent as in the common sheep. 

 Madoqua has no such septum membranaceum. 



The scrotal sack is small with small testicles. These are elonga- 

 tely beanshaped or nearly spindle-shaped about 4 cm. in length, but it is 

 to be remarked that the animal was voung, not vet mature. The thickened 

 terminal portions of the vasa deferentia is about 3 cm., or a little more 

 than that, in length and their transversal diameter at the thickest place 

 is between 4- and 5 mm. The lumen is not spongious looking, but 

 smooth, which, however, may be a sign of immaturity. These termi- 

 nal portions of the vasa deferentia are not as usual situated in the 



