292 GTMNODONTES. 



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

 -width of the interorbital space, which is flat. Length of the caudal 

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

 fin with tlie upper and lower margins bhicJc ; root of the pectoral black. 



Vert. 8/10. 



From the Red Sea to Polynesia and Australia. 



Var. n. immaculata. Body witliout spots or hands. 



a-h. Half-grown. Port Natal. From Mr. Ayres's Collection. 

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



Lieut. -Col. Playfair's Collection. 

 €. Young. Zanzibar. From Licut.-Col. Playfaii''s Collection. 

 /. Adiilt : stuffed. Mauritius. Purchased of Mr. Cuming. 

 g. Young: skin. Penang. From Dr. Cantor's Collection. 

 h, i, l\ Adult and half-grown. East-Indian archipelago. 

 I. Half-grown. 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. j3. virgata. Body and sides v/dli from six to twelve parallel 

 greyish longitudinal lines on each side. 



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



t. Adult. AmbojTia. Purchased of Hr. Frank. 



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



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



Diimel. 

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



• — Type of T. virgatus. 

 X. Yoiing. Sydney. Presented by G. Krefft, Esq. 

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

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

 /3. Adult : skeleton. From Dr. Bleeker's Collection. 



Tefrodon carduus, Cant. Mai. Fish. p. 375, from Pinang, ia pro- 

 bably another variety of T. immaculatus, but it wants the black 

 nnirgins of the caudal fin, which are so characteristic of that species. 

 Upper parts with a number of parallel blackish longitudinal lines ; 

 sides with a few blackish 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 cochinensis. Day, Proc. Zool. Soc. 18G5, p. 314, or 

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

 with T. immaculatus. The black caudal bands may have disap- 

 peared in tlie 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. immaculatus. 



