180 Short Notices. 



America, the Eohasiliidce and Bathnodontidce. The first embraces 

 four known genera, as follows : — 



1. Nasal bones with flat horizontal horn-cores overhanging their apex. 

 Cervical vertebrae short ; malar bone much reduced in f]-ont. 



Loxohphodon, Cope. 



2. Nasal bon^s with small tuberosities. 



Cervical vertebrae short. Eohasileus, Cope. 



Cervical vertebrae longer ; the malar bone reaching maxillary face. 



JJintaiherium, Leidy. 



3. Nasal bones with produced, cylindric horn-cores. 



Cervicals ? Meg acer atop s, Leidy. 



Of the above genera there are five well-determined species, viz. : 

 L. cornutus, Cope ; E. pressicornis, Cope ; U. robustum, Leidy ; U. 

 lacustre, Marsh; and M. color adoensis, Leidy. E. furcatus, Cope, and 

 JJ. mirabile, Marsh, would, perhaps, have to be added. 



There are two genera of BatJimodontidce, as follows : — 



One posterior molar with two transverse crests. Bailimodon, Cope. 



Three posterior cross-crested molars. Metalophodon, Cope. 



Of this family 4 species are known, viz. Bailimodon radians. Cope; 

 B. semicinctus, Cope ; B. hrevipes, Cope ; Metalopliodon armatus, Cope ; 

 Philadelphia, February 28<A, 1873' 



2. — Memoirs of the Geological Survey of India. 



In the Memoirs of the Geological Survey of India, vol. viii., pt. 2, 

 Mr. Hughes has again contributed to the literature on the Coal- 

 fields of India. Extending his labours to the West of the Damuda 

 Yalley, he has mapped and reported upon two separate areas of Coal- 

 bearing rocks, which have received the official titles of the Itkhuri, 

 and Daltonganj Coal-fields. The importance of the Itkhuri basin 

 is small, and there appears little chance of its ever becoming more 

 than a local source of supply for the coarser necessities of engineering 

 requirements. 



The Daltonganj basin, on the other hand, seems destined — owing 

 to its proximity to the Son (Sone) and to the canal works in connex- 

 ion with that river — to occupy a much more active sphere in the 

 economic history of India. 



Politically this field — notwithstanding the inferior quality of its 

 coals — may in the future be of high value: for during the great 

 mutiny of 1857 it supplied some coal to the steamers engaged in 

 transporting our troops from Bengal to the more disturbed districts of 

 the North West ; and should a like disaster again occur, its resources 

 may be once more called into requisition for the purposes of quelling 

 insurrection. We trust that these Memoirs are only the prelude to 

 some general work on the Coal-fields of India. Already that 

 country has, through the labours of Dr. Oldham and his able stafi" 

 of Assistants, been rescued to some extent from the obscurity in 

 which it was shrouded; and we trust that these separate contributions 

 to the Memoirs of the Survey will before long be embodied in such 

 form as best appeals to those interested in the industrial welfare of 

 our Colonies. 



