18 PIIOCEEDINGS OF THE NATIONAL MUSEUM. voi.xxiv. 
i8. HIPPOCAMPUS MOHNIKEI Bleeker. 
.(Plate X 11.) 
TATSU-NO-OTOSIGO (DRAGON'S CHILD). 
ITqrpocatitpm brevirostris ScHLEciEL, Fauna Japonica, p. 274, Nagasaki, not of 
Cavier {H. hippocampus). 
I{ipp(j(:a)itpm viohnikei Bleekeh, Verb. Ak. Met. Amst., 1851, pp. 7, 16, Kaniino- 
seki Island, Prov. Suwo, Inland Sea. — Kaup, Lophobr., 1856, p. 8, Nagasaki, 
coll. Von Siebold. — GtJNTHER, Cat. Fisbes, VIII, p. 206, after Bleeker. — 
Du.MERiL, Hist. Nat. Poiss, II, 1870, p. 521, after Bleeker. — Ishikawa, Prel. 
Cat., 1897, p. 4, Bosbu (Awa) , near Tokyo. 
Head U in trunk; trunk U to 2 in tail. D. 11-13; P. 1012. Ringvs 
10 + 3«) or 37. Egg pouch on «5 rings. Eye 2i in snout. Snout 2f 
in head, 2 to 2i in depth of body, as long as from front of orbit to 
postorl)ital spine. Coronet 2 to 2i in snout; dorsal on 2it rings. First, 
fourth, seventh, and tenth body rings, and third, sixth, tenth, and 
thirteenth tail rings prominent. 
Coronet high, compressed, divided; the anterior part with long fila- 
ments, the posterior with 5 or 6 spines. Supraor])ital spines simple, 
high, each with a long filament, and with or without a small spine 
before the large one; a median spine before eye. Snout short, thick. 
Spines on body high, the long ones on back and tail each with a long- 
filament. 
Color gray, with 8 to 10 faint, dark cross bands; snout pale; dorsal 
with a dark band and a pale edge. Young with the band more dis- 
tinct. Southern Japan, north to Tokyo. Known to us from two 
specimens from Misaki, about S3 and .5.5 millimeters long; and one, 90 
millimeters long, from P^noura on Suruga Bay, presented by the 
Imperial University. This latter and the smaller one from Misaki are 
both light brown in color, with the dorsal l)ands, ])ody bands, and 
median line on belly colored dark brown. In size the small Misaki 
specimen is less than two-thirds of the Enoura specimen, although 
both are full-grown adults. 
The species is- allied to //. coronatm^ but has the snout mu(;h shorter, 
and the coronet lower and of a peculiar form. 
(Named for the discoverer. Dr. O. G. B. Mohnike.) 
19. HIPPOCAMPUS CORONATUS Schlegel. 
TSUNO-UMIUMA (HORNED SEA-HORSE). 
Hipftocampns coronatus Schlegel, Fauna Japonica, Poiss., 1847, p. 274, pi. cxx, 
fig. 8, Nagasaki. — Kaup, Lopbobr., 1856, p. 16, Nagasaki. — GUnther, Cat. 
Fisb., VIII, 1870, p. 205, after Scblegel.—DuMERiL, Hist. Poiss., II, 1870, p. 
520, after Scblegel.— Ishikawa, Prel. Cat., 1897, p. 4, Tokyo. 
Head 1^ to If in trunk; trunk If to 2 in tail; D. 13 or 14; P. 11. 
Rings 10 -f 38 to 10. Snout slender, about as long as postorbital part 
