352 DR. ST. G. MIVART ON THE ARCTOIDEA. [Apr. 21, 



internal the hinder one is very smalL The fourth lower premolar 

 has one principal cusp, with a minute one at its base in front, and 

 two considerable-sized ones attached to it behind. These accessory 

 cusps are larger than they are in the Dogs, and especially the one 

 behind the principal cusp is more equal to the latter than it is in 

 them. The first inferior true molar is not at all sectorial. It has 

 two inner and two outer cusps and another (fifth) antero-internal 

 cusp. The hinderniost internal cusp may be subdivided into two 

 smaller ones. Although this tooth is much like the corresponding 

 one of the Civet, only the antero-external and the antero-internal 

 cusps do not preponderate in height as in that animal. The two 

 hinder cusps (one internal, the other external) correspond with the 

 "heel" of the dog's tooth, while the more anterior part corresponds 

 to the whole of the crown of the corresponding tooth of Felis. This 

 "heel" in Procyon forms nearly half the tooth, and rises nearly as 

 high as does the more anterior portion. It is very like the same 

 tooth as it may be seen in Paradoxurus. 



The second lower true molar is quinquecuspidate like the first, 

 only the azygos cusp is placed behind, instead of in front of, the two 

 pairs. It is an exaggeration of the same tooth as found in Para- 

 doxurus, but is more equal in size to the tooth in front of it. 



The muscles have been described by Dr. Harrison Allen ^ The 

 tongue is medially grooved at its anterior half and provided with a 

 lytta which is relatively a little longer than in the Cats. The tongue 

 is covered with small conical papillag, and fungiform papillae are 

 scattered amongst them. The flattened papillae are moderately de- 

 veloped. There are ten, twelve, or fourteen rather small circum val- 

 late papillas in two rows forming an acute angle open forwards, 

 with five, six, or seven in either row. 



The descending aorta, after giving oif in front its inferior mesenteric 

 artery, gives off, on either side, an external iliac artery, and a little 

 beyond divides into two internal iliacs, from the bifurcation of which 

 a small mid sacral artery continues on to the tail. The arch of 

 the aorta gives off one great innominate artery, one left subclavian. 



The lungs are as usual in the Carnivora. The kidney has a single 

 mamilla. The intestine in one instance presented a singular and 

 very exceptional and elongated dilatation between the small and 

 large intestine. This was in no wise in the form of a caecum, but 

 merely a dilatation of part of the course of the intestine. 



The liver has its right half, rather, or very much, the larger. The 

 left central lobe is simple and rather, or very, small. The bladder 

 appears on the diaphragmatic aspect, through a perforation or a 

 notch. The caudate lobe is moderate, and the Spigelian small. 

 That part of the right central lobe which is on the left side of the 

 bladder, is deeply furrowed. It has the pair of simple anal glands 

 usual in the Carnivora. 



The bone of the penis is very large ; and in one instance the vasa 

 deferentia opened upon the dorsal aspect of the urethra. 



"■ See Proc. Acad. Nat. Sc. Philadeli^hia, 1882, p. 115. 



