86 PATAGONIAN EXPEDITIONS: PALAEONTOLOGY. 



Of the pes, only metatarsal III is preserved and this differs from that 

 of Prozaedius merely in size and in its greater length as compared with 

 that of metacarpal III. 



STENOTATUS PATAGONICUS (Ameghino). 



(Plates VI, figs. 19-25 ; VII, figs, i, 2.) 



Etiphractus patagonicus Amegh. ; Enum. sistemat, etc., 1887, p. 26. 

 Dasyfius patagonicus Amegh. ; Contr. al Conoc. de Mam. Fos. de la Rep. 



Arg., 1889, p. 866. 

 Stenotatus karaikensis Amegh.; Rev. Arg. de Hist. Nat, T. I, 1891, 



P- 253- 

 Prodasypus patagonicus Amegh. ; Enum. synopt. d. Mam. Fos. de Pata- 



gonie, 1894, p. 173. 



Dasypus patagonicus Lydekker; Anales del Mus. de La Plata, T. Ill, 

 1894, p. 60. 



This species is distinguished especially by the plates of the carapace, 

 which in the movable bands are ornamented by three subequal longi- 

 tudinal ridges ; in each of the grooves demarcating the median ridge are 

 three or four small and inconspicuous piliferous pits. 



As the skull, teeth and skeleton are known only in this species, the 

 account of them in the generic description has been drawn entirely from 

 it and it remains only to give the measurements, which are taken from 

 two individuals (Nos. 15,563 and 15,863), collected by Messrs. Hatcher 

 and Peterson at Killik Aike. From the former are taken the dimen- 

 sions of the fixed scutes, and of the lumbar vertebrae, sacrum, pelvis 

 femur and metatarsal III, all the others from the latter. 



MEASUREMENTS. 



Scute of (?) second movable band, length .0135 Skull, length in median basal line 080 



" " " " " width. .006 " greatest length 097 



" " (?) eighth " " length .023 Cranium, length to anterior rim of orbit .041 



" " " " " width. .0065 Face, length 056 



Scute of second row, pelvic buckler, Occiput, height 023 



length 012 " width at base 035 



Scute of second row, pelvic buckler, width .0075 Rostrum, width at anterior end (ca.). . . .010 



Upper dentition, length 042 " " "A 016 



Diastema between J- and ^ 004 Neck, length 047 



Lower dentition, length 041 Axis, width of centrum 0185 



Length ^ to TT inclusive 02 1 Compound cervical, length 020 



