200 SCLT^RODERMI. 



p, q. Several examples, adult, half-grown, and young. Amboyua. 



Purchased of Hr. Frank. 

 r. Half-grown. Siam. Purchased of Mr. Jamrach. 

 s. Adult : skin. India. Purchased of Mr. Warwick. 

 t, u, V. Half-grown and young. China. 

 IV. Adult: skin. Island of Nairai (Feejee Islands). Voyage of 



H.M.S. ' Herald.' 

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



young. New Guinea. Presented by Mrs. Stanley. 

 s, a, /3, y-^, e-f. Adult (l-t inches long), half-grown, and young. 

 7]-K. Adult, half-grown, and young : skins. 



/3. AllACANA. 



Aracana, Gray, Ann. Nat. Hist. i. p. 110. 



Acerana, Capropygia, Keutrocapros, et Auoplocapros, Kaup, Wiegm. 

 Arch. 1855, p. 219. 



Carapace not closed behind the anal fin. 

 Japanese and Australian seas. 



1. Aracana aculeata. 



Ostracion aculeatus, Houftui/n, Verh. IIoll. Maatsch. Wet. Haarlem, 



XX. 2. 1782, p. 340 ; £1. Schn. p. 500. 

 hexagonus, Thvnberq, Vet. Ac. Nya Ilandl. xi. 1790, p. 107, 



tab. 3 ; Bl. Schn. p. 502". 

 stictonotus, Schley. Fami. Japon. Pviss. p. 297, tab. 131. fig. 3 ; 



Bleek. Verh. Ak. Wet. i. Japan, p. 15. 



Carapace six-ridged, there being a ridge along the middle of each 

 side ; no crest on the back or abdomen ; a naked stripe in front of 

 the vent. No supraorbital spines ; a short flat sjnne in the middle 

 of each dorsal and ventral ridge ; sometimes some additional spines 

 on the lateral and ventral ridges. The upper half of the body with 

 brown spots. 



Japan. 



a-h, c-e. Adult (0 inches long) and half-grown. Japan. 



2. Aracana unistriata. 



Acerana (Capropygia) unistriata, {Gray) Katip, Wicym. Arch. 1855, 

 p. 220. 



Body six-ridged. Four large compressed spines ; one on each 

 lateral dorsal ridge and one near the end of each ventral ridge. No 

 supraorbital spines. Interorbital space concave, A blackish lon- 

 gitudinal band from the eye along the side. 



Habitat ? 



a-c. Types of the species : skins, 3-4| inches long. 



3. Aracana aurita. 



Ostracion auritus, Shaiv, Nut. Misc. tab. 3.'>8, or Gen. Zool. v. p. 429, 

 pi. 173 ; Lacep. Ann. Mas. iv. p. 58 ; Ilichards. Trans. Zool. Sue. 

 iii. p. IGO, tab. 9. 



