8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 



Measurements. — Type: Total length, 665 mm. ; tail vertebrae, 

 222; hind foot, 105. Skull (type) : Greatest length, 105.9; condylo- 

 basal length, 10 1.8; zygomatic breadth, 64.8; interorbital breadth, 

 22.3; least width of palatal shelf (between last molar and interptery- 

 goid fossa), 13.9; upper canine-molariform tooth row (alveolar 

 length), 40 ; weight of type in flesh, 7 pounds. See page 12 for tables 

 of measurements and weights. 



Remarks. — This is one of the smaller subspecies of raccoons that 

 have developed on the keys about the southern end of the peninsula 

 of Florida, not differing much in size from the form on the Key Vaca 

 Group. It appears to be limited to the great mass of mangrove covered 

 or bordered islands, or keys, known as the " Ten Thousand Islands " 

 where they exist in great numbers. Most of these islets are completely 

 covered by the sea to a depth of from about one to three feet at each 

 high tide, and are totally devoid of fresh water. As most of these keys 

 have no large trees to afford hollows and no dry land the raccoons 

 must make their homes on top of the mangrove roots where they are 

 forced to retreat by the incoming tide. 



Specimens examined. — 17: from type locality, 16; from Ten 

 Thousand Islands (exact locality unknown), i. 



PROCYON LOTOR INESPERATUS subsp. nov. 



Matecumbe Raccoon 



Type.— -Yvom Upper Matecumbe Key, Florida. No. 255037, cT 

 adult, U. S. National Museum, collected by E. W. Nelson, March 19, 

 1930. 



General characters. — In weight and color resembling typical P. I. 

 elucus of adjacent mainland but both body and skull measurements 

 smaller, especially length of hind foot ; frontal area of skull much 

 more depressed. 



Color. — Much as in typical elucus, strongly washed with black on 

 upperparts and well marked nuchal patch of dark rusty or buffy, dark 

 rings on tail well marked and light rings often strongly buffy. 



Skull. — Differs from that of elucus in smaller size and marked 

 depression of frontal area. From P. I. marinus skull may be distin- 

 guished by its much larger size, more massive proportions and smaller 

 molariform teeth. 



Measurements. — Type : Total length, 730 mm. ; tail vertebrae, 250 ; 

 hind foot, 115. Skull (type) ; Greatest length, 110.4; condylobasal 

 length, 108.1 ; zygomatic breadth, 68.2; interorbital breadth, 23.1; 

 least width palatal shelf, 15.2 ; upper canine-molariform tooth row, 41. 

 Weight of type in the flesh, 8.5 pounds. See page 12 for tables of 

 measurements. 



