1904.] Allen, Mammals from Santa Marta, Colombia. 441 



Allen has indicated, as we rejected a large proportion of them. 

 I should say that one half of the adults taken had lost their 

 tails, wholly or in part. In two or three cases we found the 

 flesh and bones of the tail separated, so that it hung by the 

 skin." H. H. S. 



32. Isothrix rufodorsalis Allen. One specimen, adult 

 male, Onaca. (See this Bulletin, XII, 1899, P- 197.) 



33. Coendou sanctaemartae, sp. nov. 



Type, No. 15460, 2 ad., Bonda, Santa Marta district, Colombia, 

 April 28, 1899; coll. Herbert H. Smith. 



Type: General color above dark brownish black, punctated with 

 white. The quills for their basal fourth or third are white, then 

 blackish or brownish black tipped with clear white, the length of the 

 white tip varying according to the region of the body, averaging 

 about 5 mm. over the greater part of the back and sides, but in- 

 creasing in length on the top of the head, nape, shoulders, Jower back, 

 and basal half of the tail to about 10 mm., a few reaching 13 to 15 mm. 

 Belly and limbs grayish brown, the pelage on these parts consisting 

 of slender spines mixed with spiny hairs, the latter with fine hair-like 

 tips. The pelage of the back consists almost wholly of spines, without 

 any intermixture of hairs. 



Two other specimens agree essentially with the type, except that 

 in one the light tips of the spines of the anterior part of the back 

 have the white replaced by pale chestnut; a fourth shows a similar 

 variation in the color of the tips of the dorsal spines, and in addition 

 has a slight intermixture of brownish woolly hairs among the spines 

 over the posterior part of the back. 



Represented by 5 specimens four skins and skeletons and one 

 additional skeleton all taken in the immediate vicinity of Bonda, 

 April 1 5 and 28, and June 10 and 14. Two are males and 3 are females, 

 all adult. As shown by the following measurements, the males are 

 considerably larger than the females. 



External Measurements. 



15459, $ , total length, 941; tail, 433; hind foot, 95. 



23471, , " " 94i; ' 476; 



I5460, 1 ?, 787; ' 433; 89. 



23472, 5, 737; , " 344; 89. 



23473, 5, 75; ' " ; " " 83. 



'Type. 



