Syngnathus. 
FISHES. OSSEOUS. 
175 
Gen. XIX. ORTHAGORISCUS. Molebut. — Jaws undi- 
vided. Body, retrally, as if truncated ; belly smooth. 
^ S2. O. Mola. — Skin rough. Gill-openings oval. 
Mola Salviani, Sibb. Scot. 24 — Will. Ich. 151, Borlase., Corn. 267. — 
Tetrodon Mola, Linn. Syst, i. 412. — Short Diodon, Penn. Brit. 
Zool. hi. 131 T. Mola, Don. Brit. Fishes, tab. 25. — Occasionally 
taken in the British seas. 
Length about 2 feet ; weight about 100 pounds. Body compressed, nearly 
round, carinated dorsally and ventrally. Back mottled, dusky, belly silvery. 
Mouth, notrils and eyes, small. Pectorals small, of 12 rays. Dorsal and 
ventral fins produced, opposite, the former of 18, the latter of 16 rays. These 
two fins are connected with the caudal fin, which contains 18 large rays. 
This species was first observed by Sir Andrew Balfour, in the Frith of Forth 
{Mem. Balf. p. 80.), afterwards by Willoughby, at Penzance. It has occur- 
red on many other parts of the coast. Bisso states that they are taken at 
Nice in great numbers, and yield much oil, but the flesh is bad, Ich. p. 61. 
33. O. trimcatus. — Skin smooth. Gill-openings semilunar. 
Sun-fish, Borlase., Corn. 267 — Oblong Diodon, Penn. Brit. Zool. iii. 129. 
Tetrodon trun. Don. Brit. Fishes — On the English coast, along with 
the preceding. 
Weight from 200 to 500 pounds. Body oblong, more produced than the 
Mola. Colour on the back mottled, dusky ; on the belly silvery ; dark ver- 
tical stripes on the sides of the shoulders. Pectorals of 14, dorsal of 12, anal 
of 15, and caudal of 17 rays. 
Gen. XX. SYNGNATHUS. PiPE-FisH.--Mouth tubular. 
Gill-openings on the neck. No ventrals. 
I. With Pectoral Jins. 
a. With a caudal fin. 
b. With an anal fin. 
'1 34. S. Acus. — Body heptangular, tail quadrangular. Crown 
of the head carinated. 
Acus Aristotelis species altera major, Will. Ich. 159.— Sea- Adder, Borl. 
Corn. 267 — Syn. Acus, Linn. Syst. i. 416 — Louj, Hist. Ork. 181. — Un- 
der stones near low water-mark. 
Length upwards of a foot. Back brown, spotted ; belly whitish. Scales of 
the body radiated. Snout narrower than the head, depressed and compressed. 
Dorsal-fin of about 38 rays, with a black line on each side ; pectorals 14, anal 
6, and caudal 10 rayed, 
35. S. Typhle. — Body hexangular ; tail quadrangular ; crown 
flat. 
Acus Aristotelis, Will. Ich. 158 — S. Typh. Linn. Syst. i. 416. Don. 
Brit. Fishes, tab. 56.— Found along with the former. 
Pennant, Montagu, and some other ichthyologists, consider these two spe- 
cies as identical, the ventral carina of the latter being only somewhat indis- 
tinct. Donovan, however, seems to have pointed out, in the characters of the 
head, sufficient distinguishing marks. “ In all the specimens of Typhle (he 
