59.9:04 



Article XXIX. MAMMALOGICAL NOTES. I-VI. 

 BY J. A. ALLEN. 



It is thought best to bring together here under a general title various 

 minor notes on mammalogical subjects that are too short to be conveniently 

 issued as separate articles. Those of the present installment are as follows: 

 I. Concrescence in Premolars of a Bat. 

 II. Bats from the Island of San Domingo. 



III. Note on the Type of the Genus Sciuropterus. 



IV. Note on the Type Locality of Rangifer arctica (Richardson). 

 V. Northward Extension of Range of Coyotes. 



VI. The Generic Name Galera Brown. 



I. CONCRESCENCE IN PREMOLARS OF A BAT. 



, 



In a small collection of bats recently received at the Museum from the 

 vicinity of Merida, Venezuela, are several specimens of Artibeus quadri- 

 vittatus Peters, one of 

 which has the two up- 

 per premolars on each 

 side fused, as shown 

 in the accompanying il- 

 lustrations. The corre- 

 sponding teeth in the 

 lower jaw are normal. 

 On the right side of the 

 upper jaw the two pre- 

 molars are solidly fused 



T i , , Fig. 1. Artibeus, quadrivittatus No. 24398. Outside view 



at the base, but me CUSpS of left upper tooth row, showing fused premolars. f . 



are distinct from the cin- 



gulum upward. On the left side the fusion extends upward for two thirds 

 the length of the teeth. Normally these two teeth are quite similar in 

 structure except that the first is only about half the size of the second, and 

 are crowded in between the canine and first molar, against which they are 

 closely appressed. In the fused teeth there is nearly the same disparity 



579 



