292 OTMNODOTTTES. 



more than two-fifths of the lenpjth of the head, and equal to the 

 Avidth of the interorbital space, which is 9at. Length of the caudal 

 fin equal to its distance from the front margin of the dorsal. Caudal 

 fin with tJie upper and lower margins blade ; root of the pectoral black. 



Vert. 8/10. 



From the Red Sea to Polynesia and Australia. 



Var. a. immaculata. Bod}/ untliout spots or hands. 

 a-b. Half grown. Tort Natal. From Ur. Ayres's Collection. 

 c-d. Adult (11 inches) and young: stuffed. Zanzibar. From 

 Lieut.-Col. Playfair's Collection. 



e. Young. Zanzibar. From Lieut.-Col. Playfair's Collection, 



f. Adult : stuffed, Mauritius. Purchased of Mr. Cuming. 



g. Young: skiu. Pcnang. From Dr. Caiitor's Collection. 

 h, i, I: Adult and half-gTown, East-Indian archipelago. 



Z. Half-grcwn. New Caledonia. Purchased of Mr. Cuming. 



m. Adult (12 inches) : stuffed. Australia. Purchased of Mr. 



Gould. 

 n. Young. Australia. Presented by the Earl of Derby. 

 o-p. Adult : stuffed. 

 q-r. Adult : skeletons. East-Indian archipelago. 



Var. fi. virgata. Body and sides with from six to twelve parallel 

 greyish longitudinal lines on each side, 

 s. Adult (10 inches). Coram. Purchased of Mr. Stevens. 

 t. Adult. Amboyna. Purchased of Hr. Frank. 

 M. Half-grown. Philippine Islands. Purchased of Mr. Cuming. 

 V. Half-grown. Cape York (North Australia). Purchased of Hr. 



Damel. 

 w. Half-grown. Port Jackson. Presented by Sir J. Richardson. 



— ^Type of T. virgatus. 

 X. Young. Sydney. Presented ^y G. Krefft, Esq. 

 y. Half-grown. Micronesia. Purchased of Mr. Wright. 

 z-a. Adult and young. Voyage of the ' Herald.' 

 j3. Adult : skeleton. From Dr. Bleeker's Collection. 



Tetrodon carduus, Cant. Mai. Fish. p. 375, from Pinang, is pro- 

 bably another variety of T. immacidatus, but it wants ihe black 

 margins of the caudal fin, which arc so characteristic of that species. 

 Upper parts with a number of parallel blacldsh longitudinal lines ; 

 sides with a few blacldsh spots ; abdomen immaculate ; caudal fin 

 with black spots. — This form is known from a single example only. 

 a Skin, 6 inches long. From Dr. Cantor's Collection. 



Crayracion cochinensts, Day, Proc. Zool. Soc. 1865, p. 314, or 

 Fish. Malabar, p. 258, pi. 20. fig. 2, is, without doubt, identical 

 with 7'. immacidatus. The black caudal bands may have disap- 

 peared in the single example, which, like most specimens in this 

 author's collection, was a dried skin. A whitish spot above the eye 

 is also sometimes observed in examples of T. immaculatu-s. 



