56 



IciIXnYOCAMPUS TRYONI, Sp. HOV. 



D. 18. ? A.? p. 8. C. 8. Osseous rmgs 17/36. 



Length of head ten and one-sixth in the total length, and 

 three and four-fit'ths in the distance between the tijj of the 

 snout and the vent, which distance is two and four-fifths in 

 the total length. Suout vei'y short, three-eights of the length 

 of the head, and five-sixths of the postorbital space. Body 

 compressed, much deeper than broad. Snout turned upwards 

 at the tip ; its posterior half bearing a high sharp arcuate 

 ridge bifurcated behind, the divergent branches meeting the 

 supraciliary ridges, which are moderately developed : inter- 

 orbital space traversed by a low median ridge, which is 

 continuous with the rather indistinct nuchal ridge : a low 

 curved opercular ridge : all the body ridges acute, those of the 

 dorsal profile so much so as to cause a deep concavity along the 

 whole length of the trunk and tail : lateral ridges straight, 

 ceasing on the second or third caudal ring ; abdominal ridge 

 well developed. Ovisac extending over sixteen rings, and 

 rather more than tw^o-fifths of the length of the tail withovit the 

 small caudal fin. The dorsal fin stands upon the five anterior 

 caudal rings. Colors — Head, back, and sides brown, faintly 

 mottled with lighter ; under surface pale yellowish-brown 

 with the exception of the marsupial region which is black. 



The vmique example on which this species is founded was 

 dredged in Moreton Bay, Queensland, in my presence early in 

 May, 1886, and I embrace this opportunity of naming the 

 species after my friend, Mr. Henry Tryon, in remembrance 

 of the very pleasant collecting trip which we enjoyed 

 together there. The specimen measures but two and three- 

 fourths inches, but from the perfect development of the egg- 

 pouch I believe it to be fully adult. The high rostral ridge 

 separates this species at a glance from /. cincttis, while the 

 interrupted lateral ridge equally distingiiishes it from /. carce, 

 in which that ridge is curved downwards opposite to the vent 

 so as to join the inferior caudal ridge. 



DESCRIPTION OF A NEW AUSTRALIAN TORTOISE. 

 By J. Douglas Ogilby. 



Chelodina kugosa, sp. nov. 



(Plate vii.) 



Carapace ovate, somewhat pyriforra, narrower anteriorly, 



slightly emarginato behind, "without vertebral keel, deeply 



sculptured. Nuchal plate between two marginal plates : eighth 



