662 Bulletin American Museum of Natural History. [Vol. XXIV, 



collector's measurements are: total length, 420 mm., tail vertebrae, 150; 

 hind foot, 50. 



43. Tayra * barbara inserta subsp. nov. 



Type, No. 28492, cT ad., Uluce, Department of Matagalpa, Nicaragua, Jan. o, 

 1908; W. B. Richardson. 



Body, limbs, and tail black, the black extending forward on the ventral surface 

 to the throat; head and neck duller, brownish black; no trace of a white or yellow 

 spot on the fore-neck. 



Size small; skull narrow; zygomatic arches much less expanded than in other 

 members of the Tayra group. Skull (type), condylo-basal length, 110 mm., zygo- 

 matic breadth, 69. Unfortunately external measurements from the fresh specimens 

 are not available. 



Represented by four specimens, all from the Province of Matagalpa, taken as 

 follows: Lavala, Oct. 13, 1907, young male; Uluce, Jan. 3 and 5, 1908, two young 

 adult males and an adult male (type). 



Except in smaller size, less expansion of the zygomatic arches and total 

 absence of a light spot on the fore-neck, this form closely resembles T. 

 barbara biologic? (Thomas) from Panama. The old male skull is slightly 

 smaller than a female skull of corresponding age of biologies, and very much 

 smaller than male skulls of that form. Costa Rica specimens are inter- 

 mediate in respect to the throat-spot; in a series of 4 from Talamanca it 

 is wholly absent in two, very slight in one, and greatly reduced in the other. 



The Matagalpa series of tayras is of interest as presenting a form in 

 which the usual light spot on the fore-neck is wholly absent, in contrast with 

 all the other forms, and especially with the Colombian form ( T. barbara irara 

 Allen), which has usually in addition to the fore-neck spot another similar 

 mark on the withers. (Cf. this Bulletin, XX, 1904, pp. 36-38.) 



44. Spilogale angustifrons elata Howell. One specimen, adult male, 

 Matagalpa, Sept. 28, 1907. 



45. Mephitis macroura vittata (Licht.). One specimen, adult male, 

 Matagalpa, Dec. 30, 1908. 



46. Potos flavus aztecus Thomas. Two specimens, both adult males, 

 Ocotal, May 11, 1908. They closely resemble Mexican examples. 



47. Bassaricyon richardsoni sp. nov. 



Type, No. 28486, $ ad., Rio Grande (altitude below 1000 feet), Atlantic slope, 

 Nicaragua, April 9, 1908; W. B. Richardson, for whom the species is named. 



General color above pale fulvous, strongly varied with black-tipped hairs, which 



1 For the use of Tayra in place of Galera, see antea, pp. 586-589. 



