936 ROBERT COLLETT, 



distinct sagittal crest is present along the whole sutura sagittalis. In 

 the largest, (F) both the frontal and sagittal crests are slight, and 

 almost iniperceptible. 



The bullae osseae are moreover varying in size and shape; the 

 zygomatic arch is in some higher than in others, or more expanded. 

 The nasalia are (especially in B) short, broad and almost flat above, 

 in the others more arched and long (especially in F). The processus 

 postorbitalis is almost imperceptible in one individual (C), but very 

 conspicuous in the others (especially in D). 



In the two largest specimens, the minute foramen as entrance to 

 the inferior dental canal, which is present in all the other specimens 

 (as well as in the young one), is wanting. 



In the young (A) the skull of which has a length of 79mm, 

 breadth 45 mm, the upper m s and m * , as well as c , and the lower 

 m ^ , are not yet fully developed. No trace of a milk premolar above 

 the root of the functional p can be discerned. The foramina palatina 

 extend far forwards, and lie between the middleofw2 andms. The 

 frontalia are almost even in width, without any particularly prominent 

 postorbital process. 



The teeth. The dentition is normal in all, except in F: 

 » f , c i i) I, m I (30). 



F exhibits the peculiar anomaly, that on both sides in the lower 

 jaw^) a supernumerary molar is present posteriorly; this m^ is a trifle 

 smaller than m 4 , but constructed almost like it. 



The dentition in this specimen is: 



ih IP h^ni (32). 



To the present descriptions of the teeth of this species it may 

 be added that wi in the lower jaw is always distinguishable in its 

 structure from the other molars in the same jaw. Of its 4 pyrami- 

 dical cusps, the inner cusp of the foremost pair is not evenly pointed 

 like the rest, but slightly cleft lengthwise, so that it presents two 

 Short parallel ridges instead of one point. 



In one of the individuals, obtained at Coomooboolaroo in Jan. 1884, 

 Dr. L. found a parasitic worm in considerable numbers in the intestines. 

 Some of thcse were brought home, and appear, notwithstanding their 

 rather abnormal appearance, to belong to the large family of Taeniidae. 

 The body is cylindrical, extremely finely annulated, (each Joint barely 



1) The lower jaw in this individual was also in another rcspect mis- 

 shapen, as the l'ront portion was crooked and bent somewhat to the right. 



