318 MR. G. KREFFT ON AUSTRALIAN MAMMALS. [Mar. 28, 



The skull of this Rat differs considerably from that of all other 

 species of Hapalotis with which I am acquainted. In the small 

 species the brain-cavity is dome-shaped, the parietals expand towards 

 behind, and the occiput is rounded off ; the frontals almost form a 

 triano-le, and are consequently very narrow between the zygomatic 

 arches. The present large species differs considerably, as will 

 be seen from the accompanying sketches by Miss Harriet Scott's 

 pencil. 



The skull (figs. 1, 2, 3, p. 317) is elongate, not very broad, and 

 narrows considerably towards the occiput ; the frontals are depressed 

 and smallest in the middle ; the parietals, also narrow and depressed, 

 form an oblong square, as long again as broad. The teeth (figs. 4-7, 

 p. 31 7) (as usual, 1. 1, M. ^ = 16 in number) are of moderate size, 

 the upper incisor forming more than the half of a circle. The 

 molars are much worn in the specimen before me ; the first tooth 

 has three, the second two, and the last one fold. In the lower 

 jaw these worn-down tubercles or folds are four, three, and two 

 respectively. 



Another, smaller Rat in the collection is probably a young indivi- 

 dual. The tail is similarly spotted, the whiskers are long and black, 

 but the fur appears softer and longer. I had no opportunity of 

 examining the skull. 



Hapalotis personata, sp. nov. 



This is also a coarse-haired Rat, similar in colour to the previous 

 species, but distinguished by a black mark from the side of the nose 

 to the eye, which is surrounded by it. The fur beneath is sandy 

 white ; and on the sides each hair is mottled with light-brown patches 

 (sometimes in the middle, and occasionally at the tip), giving the 

 fur rather a dirty appearance. The tail is about 6^ inches long (the 

 body 9 inches), covered with coarse irregular scales, between which 

 a few stiff hairs are visible. The skull resembles that of Mus hir- 

 sutus. In the upper jaw the first tooth has three tubercles of almost 

 equal size, the second also three (the inner one very small), and the 

 third two (the inner less than half the size of the outer one). The 

 teeth of the lower jaw have four, three, and two tubercles. 



A Bat probably referable to the genus Petalia, but not so large 

 as Scotophilus morio, was found in the collection ; and the Australian 

 Museum is in possession of another specimen from Rockhampton. 

 This Bat is tailless, has a pointed muzzle, and is provided with teeth 

 resembling those of the genus Pteropus. 



I also obtained a single skin of a Perameles from the same loca- 

 lity, which differs from P. nasuta and P. obesula. It has the harsh 

 bristly fur of the latter, is, however, of a much lighter hue, and 

 beneath quite white. It is larger than P. obesula, but not so large 

 as P. nasuta. The dentition is very perfect and not much worn ; 

 but all the skulls of P. obesula or P. nasuta at my disposal have 

 the teeth so much ground down that comparison is impossible. I 

 consider this species identical with P. dor ey ana of Quoy and Gaim. 



