78 PATAGONIAN EXPEDITIONS! PAL/EONTOLOGY. 



MEASUREMENTS. 



Metacarpal II, length 012 Pelvic opening, width at first sacral. . . .013 



" " width of proximal end. .003 " " " " acetabulum . . .025 



Metacarpal III, length 0145 Femur, length from great trochanter. . .0425 



" " width of proximal end .0045 " width of proximal end 015 



Metacarpal IV, length 007 " " " distal end oil 



" " width of proximal end. .004 Patella, length 009 



Digit II, length 039 " width 005 



" III, " 037 Tibia, length 040 



" IV, " 028 " width of proximal end on 



Ungual phalanx ,digit II, length oio " " " distal end 008 



" " " III, " 015 Fibula, length 038 



" " " IV, " 014 " width of proximal end 002 



Ilium, length 036 " " " distal end 005 



PROZAEDIUS PROXIMUS Ameghino. 



(Plates V; VI, figs. 15-18.) 



Ruphractus proximus Amegh.; Enumeracion sistematica, etc., 1887, p. 26. 

 Zaedyiis proximus Amegh.; Contrib. al Conoc. de Mam. Fos., etc., 1889, 



p. 867. 



Prozaedius proximus Amegh. ; Rev. Arg. de Hist. Nat., T. I, 1891, p. 327. 

 Dasypus proximus Lydekker ; Anales del Museo de La Plata, T. Ill, 



1894, p. 61. 



The nearly complete carapace figured on Plate V seems to be referable 

 to this species. It represents a somewhat larger animal than P. exilis 

 and the markings of the scutes differ slightly, those of the movable bands 

 having a somewhat broader median longitudinal ridge, giving the plate a 

 rather more fluted appearance. This particular individual has three glan- 

 dular openings in the median line of the pelvic buckler, one in each of 

 the first three fixed rows ; the openings are bilobate, more or less com- 

 pletely divided into two foramina, and the plates are perforated by them. 

 In Dasyptis septemcinctus the openings are similar, but occupy a more 

 posterior position ; namely, in the third, fourth and fifth rows. The follow- 

 ing dimensions are taken from No. 15,237, an isolated carapace. 



MEASUREMENTS. 



Carapace, estimated length 183 Scute of tenth band, width 0055 



greatest width 140 Scute of first fixed row, length 009 



Scute of tenth band, length 020 " " " " " width 006 



