110 



DESCRIPTION or A NEW FISH FROM LORD HOWE 



ISLAND. 

 By J. Douglas Ogilby. 



Tetrodon altipinnis, up. nvr. 

 D. 10. A. 8. P. 16. C. 8. 



The length of the head is three and tliree-fourths in that of tlie 

 body. The eyes are situated at an equal distance from the tip of 

 the snout and the upper pectoral ray, and the diameter is two- 

 thirds of the length of the snout : interorbital space slightly con- 

 cave, three-fifths of the diameter of the eye. Nasal openings two 

 on each side placed in a moderately prominent papilla. Dorsal 

 profile of moderate breadtli and very slightly concave. The 

 distance between the tip of the snout and the origin of the dorsal 

 fill IS one and six-sevenths in the total length : the snout is five- 

 sevenths of the distance between tlie posterior dorsal ray and the 

 origin of the caudal fin, and is rather longer than the height of 

 the caudal pedicle immediately liehind the anal fin, the greater 

 portion of which is situated behind the dorsal : both dorsal and 

 anal fins are high and falcate, the second or highest ray of the 

 former being two and a half times the height of the last ray, while 

 in the latter there is a corresponding difference though in a lesser 

 degree : the pectoral fins are short, rounded, and but slightly 

 longer than the snout : the caudal is long, five-sixths of the length 

 of the head, and truncate with the outer rays produced. No 

 lateral fold on the tail. The upper surface of the head, the liglit 

 coloured part of the sides, and the under surface of the Itody witli 

 acute scattered spines; anterior jiioicty of the dorsal profile covered 

 with densely crowded sinuous rugosities, and with a few irregu- 

 larly placed smaller spines ; rest of the back and the tail, above 

 and below, with similar I'ugosities, but spineless. Colors — The 

 upper surface of the head yellowish-br'own, the lips and sides of 

 the head luucli darker ; the back and upper half of the sides gray, 

 ornamented with numerous milk-white spots, a few of which have 

 a dark centre ; lower half of sides, entire under surface, and fins 

 liright yellow. 



The species above described was brought from Lord Howe 

 Island by Mr. Icely, the Visiting Magistrate, and measures nine 

 inches in length. 



To the under jaw of this specimen there was attached a Cirri- 

 ped belonging or allied to the genus Atielasma, possessing ramose 

 appendages near the base of the peduncle. The cirrhi are however 

 fully developed, and not rudimentary as in Anelasma squalicoln, 

 of Loven. This specimen has been examined by Mr. Brazier, wlio 

 tells me that it is (juite unknown to him and will probably turn 

 out to be a new species. Should such, on future investigation, 

 prove to lie tlic case, a description from Mr. Brazier's pen will 

 probably a])pcar in " The Records " in due time. 



