31 G GVMNODONTES. 



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

 vent. No otlicr spots. 

 Vert. 9,12. 



South Australia ; Tasmania. 



a. Adult (VS.j inches) : skin. South Australia. 



b. Younj;'. South Australia. Purchased of Mr. Stevens. 



c. Adult: dried. Tort Loschenault. Presented by W. E. Bates, Esq. 

 d-c. Adult (IC inches). Tasmania. 



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

 0. Adult : skeleton. Tasmania. Purchased. 



8. TEICHODIODON. 



Diodon, sp., Ci/r., Kaitp. 



Tricliodiodon, BIcck. All. Ichth.. Gi/mnod. p. 40. 



Jaws without median suture. Body covered Avith very small 

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

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

 allied genera. 



Atlantic. 



1. Trichodiodon pilosus. 



Diodon pilosus, 37/i!c/i. Trans. Lit. ^- Phil. Soc. New York, i.y). 471, 



pi. 0. fig. 4. 

 ? Uiodou asper, Ckv. Mem. Miis. iv. p. 138; Barneville, Rev. Zool. 1840, 



p. 142 (ailult ?). 



The spines are hair-like, 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. 



0. TRICHOCYCLUS. 



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

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



1. Tricliocyclus erinaceus. 



Owing to the indifferent 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 arc those on the sides) about 

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

 covered with such hairs. The j^ws.are prominent, depressed; and 

 the upper terminates in a slight hook, overlapping the lo^er 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. Leadbeater. 



