316 GYJINODONTES. 



below the eye, in front of and behind the pectoral fin, and above the 

 vent. No other spots. 



Vert. 9/12. 



South Australia ; Tasmania. 



a. Adult (13| inches) : skin. South Australia. 



h. Young. South Australia. Purchased of Mr. Stevens. 



c. Adult: diied. Port Lescheuault. Presented by W. E. Bates, Esq. 



d-e. Adult (10 inches). Tasmania. 



f-n. Adult, half-grown, and young : stuffed. Tasmania. 



0. Adult : skeleton. Tasmania. Purchased. 



8. TRICHODIODON. 



Diodon, sp., Ctn\, Kaup. 



Trichodiodon, Bleeh. Ail. Ichtli. Gymnod. p. 49. 



Jaws without median suture. Body covered -n-ith very small 

 dermal ossifications, each with a pair of lateral roots, and a fine, 

 flexible spine. A nasal tentacle. Dorsal and anal fins as in the 

 aUied genera. 

 Atlantic. 



1. Trichodiodon pilosus. 

 Diodon pilosus, Mitch. Trans. Lit. iy Phil. Soc. New York, i. p. 471, 



pi. 6. fig. 4. 

 ? Diodon asper, Cuv. Mcin. Mus. iv. p. 138; Barneville, Rev. Zool. 1846, 

 p. 142 (adult ?). 



The spines are hair-Hke, one-eighth of an inch long in an example 

 1^ inch long. The large example in the Paris Museum (2| feet 

 long) is covered with round brown spots. 



Northern Atlantic. 



9. TRICHOCYCLUS. 



Jaws without median suture. Body covered with long hair-like 

 bristles. No nasal tentacle. (Dorsal and anal fins absent ?) 



1. Trichocyclus erinaceus. 



Owing to the iudiff'erent preservation of the specimen, I can give 

 but an incomplete description of it. It is seven-eighths of an inch 

 long, and the longest hairs (which are those on the sides) about 

 three-eighths of an inch. The entire body, except the snout, is 

 covered with such hairs. The jaws are prominent, depressed ; and 

 the upper tei-minates in a slight hook, overlapping the lower jaw. 

 The caudal fin is distinct, and the pectoral a narrow fringe behind 

 the gill-opening ; but I am unable to find a trace of the dorsal and 

 anal fins. 



Habitat ? 



a. Purchased of Mr. Leadbcater. 



