216 



DINOCERATA. 



palate is much expanded between tlie ("uiinc tnsks. I'lie lower jaw has 

 the alveoles of the incisors and canines ncarh- a ertical. The tlant;e for 

 protection of the tusk is lono;, and. rounded in front (Plate XIX, li^ure 1 ). 



This specimen represents a distinct sul)-i;einis of Tii/oecras, wliicli uku' 

 be called Laoceras. 



The type specimen (nnnilier 1(144) of this s])ecies was found by Mr. 

 S. Smith, May, 1875, at Haystack Mountain, W\-oininii'. 



'I'liis specimen consists of a skull in good condition, and various other 

 bones of the same individual. 



The gvological horizon of tliis s|)ecimen is in tlie Dinocei'as beds. 



The known remains of this s])ecies are preserved in the Museum of 

 Yale College. 



Tiuocerns 8peiriainim, Osborn, sp. 



Woodcut: l'.i:i, Ik'Iow. 

 Fm. 193. 



iCUUE ig^i— SI llll of i 



-idL \u u ( il (.1 o hon 1 

 One eierhtb u itiii li bizt . 



Osborn (Loxolophodon Speirianum). — Memoir upon Loxolophodon and 

 Uintatheriuni, [ip. 18, 20, 21, 22, 24, 41, 44, Plate I, 18S1. 



This figure was photog-raphed on wood from the lithographic plate 

 cited above. The restorations of this skull do not allow some of its 

 important features to be determined, but the g-eneric characters ai'e distinct. 



In the restoration of this species, as given in the work cited above, 

 the skull belonged to a male, and the lower jaAV to a female. The bones 

 of the fore limb, also, are in a position impossible in life. 



The type specimen of this species was discovered bv Mr. Francis 

 Speir, in 1878, in Wyoming. 



This specimen consists of the skull here figured. 



The geological horizon is in the Bridger beds of the Middle Eocene. 



The known remains of this species ai-e in the I'rinceton Museum. 



