SCOTT : LITOPTERNA OF THE SANTA CRUZ BEDS. 



103 



.015 



? Fourth lumbar, length of centrum . 



.027 



.019 



" " width of post, face . 



.021 



.014 



Last lumbar, length of centrum 



.018 



.016 



" " width of anterior face . 



.019 



.020 



" " posterior face 



.013 



.016 







Axis, width of posterior face . 



? Fifth cervical, length of centrum . 



" " width of anterior face 



" " " " post, face . 



Median thoracic, length of centrum . 



" " width of ant. face . 



The fore-limb is very incompletely represented in the collections and 

 the following measurements were taken from several individuals. 





Measurements. 







Humerus, distal width over trochlea .016 



Radius, 



distal thickness 



.006 



" " " " epicon 



d. .024 



Carpus, 



length in median line 



.0175 



Ulna, length of olecranon 



•034 



it 



width 



.020 



" distal width . 



.009 



Metacarpal II, proximal width 



.006 



" " thickness 



.006 



ti 



III, " 



.016 



Radius, proximal width . 



.oi6 



tt 



" " thickness 



.012 



thickness . 



.009 



it 



IV, length . 



.010 



" distal width 



.017 



tt 



" proximal width 



.004 



The measurements of th 



e hind-limb 



are taken from a single individual, 



No. 15,719- 













Measurements. 







Femur, length from head 



.141 



Metatarsal III, proximal width 



.017 



" gr't trochantei 



.159 



tt 



" proximal thickness 



.017 



" proximal width 



•039 



ti 



" distal width . 



.017 



" distal width 



•034 



tt 



IV, length . 



.011 



" " thickness over cond 



.041 



tt 



" proximal width 



.0025 



Tibia, length, excl. spine 



•143 



Phalanx 



I, digit III, length . 



•037 



" proximal width . 



•034 



tt 



I, " " prox. width 



.0165 



distal width 



.019 



tt 



I, " " " thickness 



> .012 



" thickness . 



.020 



tt 



I, " " distal width 



.0125 



Fibula, distal width 



.008 



tt 



2, " " proximal width 



I .0135 



" thickness 



.013 



tt 



2, " " distal width 



.0125 



Calcaneum, length 



.056 



tt 



2, " " length . 



.025 



Astragalus, length 



.0285 



tt 



3, " " width of trochlea .014 



" width of trochlea 



.016 



tt 



3, " " greatest width 



.016 



" distal end 



.014 



Phalanx 



3, digit III, length (plantai 





Ectocuneiform, length . 



.008 



side) 



. 



.018 



width . 



.0145 



Pes, length in median line 



•193 



Metatarsal III, length . 



.083 









Localities. — The type-specimen was found in the cliffs of the Rio Santa 

 Cruz and the numerous individuals brought home by Messrs. Hatcher & 



