90 HYSTRIX MÜLLERI. 



colour: in the specimens from Java tlie chest, bellj and 

 limbs are dirty red-brown , in the Sumatra specimens on 

 the other hand dark brownish black. In the latter more- 

 over the collar on the throat is brighter white and there- 

 fore more evident." 



I add the following characteristics : the head is comparati- 

 vely very long and narrow ; the whiskers are very long — the 

 longest measures 19 c. m. — brownish-black at the base 

 with long white points. A slightly elevated crest arises 

 between the ears along the neck. The spines of the crest 

 are cylindrical, the longest measures 53 mm., brownish- 

 black , ringed with white towards the tip of the spine. 

 The spines on the back are polygonal and channeled , the 

 longest measures 4 cm., brownish-black , in youth white 

 at the tip. On the middle of the back the quills are 

 very long, the longest 19 cm. — in the H. javanica 

 126 m. m. — , the greatest thickness is nearly 6 m. m. , 

 brownish-black ringed , white at the base and white towards 

 the point for 95 m. m. Other quills longer but slender, 

 and more rarely projecting beyond the former. 



Tail as in the Java species , the spines however have 

 longer white points , and so the backpart of the animal is 

 much whiter than in th e Java Porcupine. Marshall in his 

 note (1. c.) says: "in the skeleton and skull I can find no 

 material differences between the two species (sc. H. java- 

 nica and H. longicauda z=z Miilleri).'' After a careful exa- 

 mination of two skeletons of H. javanica and one of H. 

 Mulleri, I agree with Marshall's statement about the 

 skeletons , as I find in both species the same number of 

 vertebrae, viz. 14 costales with 14 costae , 5 lumbares, 4 

 sacrales and 15 caudales. But there are diiferences in the 

 skulls. The skull of H. Millleri is longer and narrower, 

 the nasalia are longer, the length of the upper molar 

 series on the other hand is less in H. Millleri. The palatal 

 incision in the latter does not surpass the molar series, 

 while that incision in H. javanica advances forwards to 

 the front margin of the hinder molar, as 'va. H. crassispinis. 



Notes from the Leyden ]Museu.m. 



