BY DR. E. P. RAMSAY AND J. DOUGLAS OGILBY. 11 



In the mean time, the expedition which had been sent by the 

 Australian Museum, under the command of Mr. Robert Etheridge, 

 to make collections on Lord Howe Island, had the good fortune 

 to obtain from Mr. Campbell Stevens, a iiiember of the police 

 force there stationed, a second example of Mr. Macleay's fish, 

 which, like the first, had been washed ashore dead. From these 

 two Pacific examples we have drawn up the following detailed 

 description : — 



Tetragonurus wilkinsoni, Macleay. 



B.V.D. 15/13. A. 1/11-12. V. 1/5. P. 16. CIS. L. 1.112- 

 115. L.tr. 10/20. 



The length of the head is from four and a third to four and a 

 half, the height of the l)ody immediately beliind the pectoral fin 

 seven and a fifth in tlie total length. The eye is large, the greater 

 part of it situated in front of the middle of the liead ; it does 

 not encroach on the upper profile, and its diameter is three and 

 two-fifths in the length of the head, while it is equal to the length 

 of the snout, which is obtuse, and whose upper profile is slightly 

 convex. The interorbital space is flattened, and has a low median 

 longitudinal ridge which commences between the posterior nostrils 

 and terminates in a light colored bony knob between the posterijr 

 margins of the eyes ; its width is four-fifths of the diameter of the 

 orbit, which is but little greater horizontally than vertically. The 

 breadth of tho body immediately above the base of the pectoral fins 

 is five-sevenths of its height. The jaws are equal, with the cleft 

 of the mouth olilique and of considerable size, the maxilla 

 extending backwards to or but little beyond the anterior margin 

 of the orbit. Tlie edges of the opercular bones are armed with 

 minute denticles. 



The teeth in both jaws are covered almost to the very tips with 

 IV gum-like coating, which being removed shows that they are 

 arranged in a single row, are distinctly separate tliough placed 

 close to one another, number in the maxilla — where they are 

 much more distant than in the mandible; — twenty-five on eacli 



