Dr, 0- W.Andrews — Fossil Mammalia from Egypt. 401 



joint 35 mm., breadth 15 mm., length of ultimate joint 20 mm. 

 The fingers are long and slender, the inner edge of the forceps 

 being denticulated; wrist 6mm. long by 10mm. broad. The 

 epimeral border of each abdominal segment is falcate in contour. 



The general form and details of this Crustacean, so far as 

 preserved, clearly mark its place among the Astacidea, or under 

 the Astacomorpha (as defined by Huxley, 1881), and I would 

 suggest that Oppel's name of Eryma is appropriate for it, seeing that 

 it agrees very closely in the divisions of its carapace and its tubercu- 

 lated surface, in the antennae, the form of the first pair of forcipated 

 chelae, and the proportions of its abdomen, with E. Perroni and other 

 Jurassic species. 



Oppel observes^ that no examples of the genus Eryma have been 

 found in rocks younger than the Jurassic, and that the Astacidse of 

 the Chalk are placed in McCoy's genera Hoploparia and Enoplo- 

 clytia, but in this instance the form in question agrees much more 

 closely with Oppel's genus Eryma than with other forms. I therefore 

 propose to relegate it to that genus, and to designate it by the specific 

 name of Dawsoni, in honour of Dr. G. M. Dawson, C.B., F.E.S., the 

 eminent Director of the Geological Survey of Canada, who has done 

 such splendid work in the field in mapping the geology of British 

 Columbia. 



EXPLANATION OF PLATES XV AND XVI. 



{All from the Upper Cretaceous formation, and drawn of the natural size.) 



Plate XV. 



Fig. 1. Linuparus Vancouver ensis, Whiteaves. Dorsal aspect of cephalothorax, 



showing some of the amhulatory legs. Puntledge or Comox River, 



Vancouver Island, British Columbia. 



,, 2. Linuparus Vancouverensis. Hornby Island. Shows cephalothorax and 



abdomen united and smaller walking limbs. 

 ,, Z. Linuparus Vancouverensis. Comox River. Shows inner surface of thorax, 

 with the mandibles (»».) and the walking-legs ; also bases of the 

 antemiules and upper surface of abdominal somites. 

 Plate XVI. 

 Fig. 1. Linuparus Canadensis, ^hxiQ^yie,?,. Under side of cephalothorax. 

 ,, 2. Eryma Bawsoni, H. Woodw. Hornby Island. Specimen imbedded in 

 a nodule seen in profile. Geological Survey Museum, Ottawa. 

 {To be eontinued.) 



III. — Fossil Mammalia pbom Egypt. Part 11. 

 By Chas. W. Andeews, D.Sc, F.G.S.. British Museum (Nat. Hist.). 



IN addition to the remains of the large Anthracotheroid {Bracliyodua 

 africaniis) described in the first part of this paper (Geol. Mao., 

 Dec. IV, Vol. VI, 1899, p. 481), the collection of mammalian 

 bones from the Lower Miocene of Moghara also includes portions 

 of the skeleton of a small rhinoceros. Unfortunately this is very 

 poorly represented, there being only an incomplete scapula and an 

 atlas vertebra, and in the absence of any portion of the skull or 

 teeth it is impossible to determine the species to which it may have 

 belonged. As was pointed out in Part I, the age of the deposit is 

 Burdigalien (Lowest Miocene), and it is therefore contemporary 

 with the Sables de I'Orleanais and the fresh-water deposits of 

 1 Palaeontol. Mittheilung., 1862, p. 22. 



DBCADB IT. — VOL. Til. -.-NO. II. *" 



