L. GABR. ANDERSSON, BATRACHIANS FROM CAMEROON. 27 



(104 mm.) as type for his B. loevissimus. By this a difference 

 stated by Werner might be explained at once, viz. the diffe- 

 rent size of the paratoids. According to Boulenger the 

 length of those is equal with their distance from the nostrils, 

 while Werner states them to be considerably longer. As 

 seen by the table below, the paratoids considerably increase 

 in length with age; therefore it can be that both Boulen- 

 ger's and Werner's descriptions correspond with the case 

 in this same species, that of the former with the young, the 

 1 ätter with the older ones. 



Another difference between superciliaris and Icevissimus 

 according to Werner should be the totally want of dorso- 

 lateral folds in the latter. Among the specimens present, 

 there are some examples with distinct folds, some without, 

 Jhis however not being any difference due to age, since in 

 the largest example we do not find any folds at all, where- 

 as in the next largest they appear to be very distinct. In 

 the specimen in size after that (100 mm.), there is on one 

 side a distinct glandular fold, which is totally absent on 

 the other side. A similar variation exists in the smaller spe- 

 cimens as well. Nor can it be a sexual difference, all the 

 three large specimens mentioned being females. 



More difficult to explaine is why the hind limbs in Wer- 

 ner's specimens should be shorter than in those of Bou- 

 lenger, as these limbs, as appears by the table, exceedingly 

 increase in length with age. This increase, however, is limi- 

 ted only to the thighs and the calves, but does not exist in 

 the tarsus and the foot, which during the whole life keep to 

 the same relä tive length. 



As to other parts of the body, the före limbs do not 

 show any variations in length in the different ages. The 

 nose as well as the horizontal diameter of the eye grow shor- 

 ter with age but to very different degree, the decrease of 

 the former measurement being rather small, that of the lat- 

 ter very much greater, wherefore the nose, which in the young- 

 est specimens is shorter than the diameter of eye, becomes 

 the longest with age, both measurements being about equal 

 in middle-sized specimens. 



The paratoid glands (counted to the hind margin of the 

 eye) are in the small specimens rather more than a fourth of 

 the length of body, but in the large ones more than a third 



