112 



Annals of the Carnegie Museum. 



M EASUREMENTS. 



Length of ilium from border of acetabulum to point of ilium approxi- 

 mately 100 



Greatest transverse diameter of femur at head"^ 42 



Antero-posterior diameter of head of femur 18 



Vertical 



Transverse 



Antero-posterior 



tibia. 



19 



31 

 30 



" distal end of tibia 18 



Transverse " " " " " " 20 



Height of tarsus, end of tuber calcis to distal face of cuboid 68 



Height of astragalus 27 



Greatest transverse diameter of astragalus 22 



Transverse diameter of trochlea of astragalus, approximately 12 



Total length of calcaneum 154 



Transverse diameter of calcaneum at lesser process 20 



Greatest height of cuboid 17 



Antero-posterior diameter of cuboid 16 



Transverse " " " 11 



" " tarsus at heads of metatarsals 20 



Transverse diameter of head of Mt. HI 12 



Antero-posterior diameter of head of Mt. HI 13.5 



Transverse " " " " " H 6 



Antero-posterior " " " " " " 11 



Measured at facet for entocuneiform. 



Antero-posterior diameter of head of Mt. IV, approximately 10 



Transverse diameter of head of Mt. IV, approximately 7 



33. Helaletes nanus Marsh. 



Amer. Jour. Sci., Vol. IV, 1872, p. 218. 



Type: " Lophiodon" nanus Marsh."'' Fragments of both upper 

 jaws with all the cheek-teeth represented on right side, No. 1 1080, 

 Yale Museum Catalogue. 



Hypolype: " Ilyrachyus" nanus Leidy.'' P- lower jaw and lower 

 dentitions. ? Philadelphia Academy of Natural Sciences. 



Horizon: Middle Eocene. 



Locality: Grizzly Butte, Wyoming. One of the hypotypes, a lower 

 jaw from near the Lodge-Pole Trail Crossing, Dry Creek Valley, 

 Wyoming. 



'^ The bone is slightly crushed in this region. 



" L.c, Vol. I, 1871, p. 37. 



'8 "Extinct Vertebrate Fauna." . . . Report U. S. Geol. Surv. of the Terri- 

 tories, Vol. I, 1873, p. 67, PI. XXVI, Fig. 11; PI. VI, Fig. 42; PL XXVII. Figs. 21 

 and 22. 



