(40 ) 



fl. Artibeus bilobatus Peters, (convexus Lyon). 



Bi-;iviu 4 ; Cioberuadoi', o ; lusoleta, 1 ; .Sevilla, 1 ; Jicaron, 1 ; Cebaco, 1. 



Jlr. Ljon has recently separated the Isthmian btlolxdus under the name of 

 Uwdermii conve.vum,* on the ground that the tooth row is more arcuate. But the 

 material available to me does not coutirm the separation — at least, on this ground. 

 For of two specimens from Bogava, Chiriqui, collected by l\Ir. Watson, the tooth row 

 of one is strongly arcuate (l)reaclth across molars 98 mm.), as is one from Ecuador, 

 while that of the other exactly matches, in its slight arcuatiou (breadth 9'0 nun.), an 

 example from I'ara, Brazil. As the diflfereuce between two specimens from one 

 place exceeds that quoted by ."Mr. Lyon (9'2 compared to 96 mm.) I prefer in the 

 meantime, unlil other characters are pointed out, to use the older name for this bat. 



T. Artibeus watsoni Thos. 

 Sevilla, 1 ; Cebaco, 2. 



8. Vampyrops zarhinus H. All. 



Sevilla, L 



9. Potos flavus megalotus. .Mart. 



Parida. 1 ; Sevilla, 2 ; .Mmijas, 2. 



These Kiukajous vary in colour to a certain e.xtent, some of them being almost 

 as pale as Guatemalan specimens of subsp. astecus, but all show an indication of the 

 dark dorsal streak. 



10. Sciurus melania Gray. 

 Sevilla, 3 ; lusoleta, 2 ; Celiaco, 1 ; Brava, 3. 



11. Sciurus hoffmanni chiriquensis Bangs. 



Insoleta, 1 ; Sevilla, 1 ; Cebaco, 5. 



In the Cebaco series there is a considerable variation in the amount and degree 

 of the reddish or yellowish of the belly, two of the specimens being as red below as 

 true S. hof)iiaHHi, from which they could hardly have fceeu separated. The others 

 agree closely with fopotypcs from Bogava (^^^atson coll.). 



There can be no question that, whatever other S. American forms may be allied 

 to it, the present Squirrel is entirely distinct from the Guianan S. ccestucms Linn. 



12. Mus rattus L. 



Brava, 20; Cebaco, 14. 



L). Zygodontomys cherriei Allen. 



Cebacii, 0. 



Keceivcd fmni .Mr. II. ,1. V.'alsoii IVoni Cliiriiini, whence it is also recorded by 

 -Mr. ]5angs. 



The latter author places Oryzoiihys cliri/somelas Allen under Zygodontomi/s, but 

 specimens which I refer with confidence to that animal have the typical molar 

 structure of Oryzoiiiys, the cross-crochet between the true lamime being clear and 

 well developed. 



' P. JJial. ,ivi: n'ash ky. p. SH. IHOI. 



