EDENTATA OF THE SANTA CRUZ BEDS. 153 



the other species. The scutes of the second row, which corresponds to 

 the first row of the two preceding species, are relatively larger than in 

 either of the latter and the shield, as a whole, is of a different shape, as 

 it narrows forward much more rapidly from the lateral wings. The 

 sutural lines are less elevated than in E. complicates and are conspicuous 

 only around the large group formed by the two posterior pairs of median 

 plates. These same four plates are the only ones on which the central 

 pits are well displayed ; on the others, the pits are either very small, or 

 entirely wanting. Whether this is due to the age of the individual, or is 

 characteristic of the species, cannot, of course, be determined from a single 

 specimen. 



The few foot-bones that have been preserved differ but little, except in 

 size, from the corresponding parts of Propalcsohoplop horns. An ungual 

 phalanx of the manus is long, decurved and bluntly pointed. The cuboid 

 is relatively longer proximo-distally and narrower than in the last named 

 genus and the process from the plantar side is remarkably prominent and 

 massive. The third and fourth metatarsals (Plate XXVI, fig. 9) are pro- 

 portionately somewhat narrower and more elongate than in the other 

 genus, and have longer shafts, with greater relative distance between the 

 proximal and distal thickenings ; the distal trochlea of metatarsal IV has 

 its dorsal portion divided into two distinct facets by a broad, shallow sul- 

 cus. The phalanges also are similar to those of Propalceohoplophorus, 

 but the ungual of digit II, the only one preserved, is rather more elongate 

 and depressed. 



In the following table are included measurements of a calcaneum and 

 astragalus, which though found separately, agree so well in their propor- 

 tions with the other bones of the pes that they may belong to the present 

 species ; at all events they may be confidently referred to Encinepelhis. 



The type of the species was collected by Mr. Hatcher at Killik Aike, 

 on the Gallegos river. 



MEASUREMENTS. 



Cephalic shield, length 148 Ungual, digit I, manus, thickness ofprox- 



" width 136 imalend 0185 



Pisiform, length 033 Calcaneum, length 063 



" width of proximal end oio " " of tuber 034 



Ungual, digit I, manus, length 032 " width of proximal end 022 



Ungual, digit I, manus, width of proxi- " " " distal end 019 



mal end O!55 " " across sustentaculum. .030 



