FROM QUATENRARY DEPOSITS IN THE VALLEY OF MEXICO. 
77 
Description of the Plates. 
PLATE IV. 
Fig. 1. Oblique view of the outer and grinding-surfaces of the molar series of teeth, 
Palauchenia magna, nat. size. 
Fig. 2. Inner view of the same teeth, nat. size. 
Fig. 3. Outer view of mandibular teeth (with mandible and incisors restored) of Palau- 
chenio magna , two-fifths of nat. size. 
Fig. 4. Outer view of mandible and mandibular teeth ( Auchenia vicugna ), two-fifths 
of nat. size. 
Fig. 5, Oblique under view of the third and fourth cervical vertebrae of Palauchenia 
magna (one-eighth nat. size). 
Fig. 6. Oblique upper view of the second to the seventh cervical vertebrae of Palauchenia 
magna (one-eighth nat. size). 
PLATE V. 
Fig. 1. Side view of vertebra dentata, Palauchenia magna. 
Fig. 2. Side view of vertebra dentata, Auchenia lama. 
Fig. 3. Side view of vertebra dentata, Camelus dromedarius. 
PLATE VI. 
Fig. 1 . Side of third cervical vertebra, Palauchenia magna. 
Fig. 2. Side of third cervical vertebra, Auchenia lama. 
Fig. 3. Side of third cervical vertebra, Camelus dromedarius. 
PLATE VII. 
Side view of sixth cervical vertebra, Palauchenia magna. 
The figures in Plates V.— VII. are of the nat. size. The letters &c. are explained in 
the text. 
