668 
SCANDINAVIAN FISHES. 
peated several times, but both the male and the fry 
invariably behaved in the same manner. 
As the genus is defined in the above diagnosis, it 
contains six of Kaup’s" and DumekilV genera, two 
of which, Siplionostoma and Syngnathus, are retained 
by Gunther®. The distinction between these two genera 
is stated to consist in the character that in Siplionostoma ' 
the lower covering plates of the shoulder-girdle (the 
lowest pair of lateral plates in the first ring) are only 
loosely joined to each other at the middle of the belly; 
while in Syngnathus they are firmly coalescent, and 
their juncture is usually covered by the first ventral 
plate, which is always wanting in Siplionostoma , this 
genus thus having an oblong, rhomboid a t patch, co- 
vered only with skin and without plate, at the middle 
of the belly just behind the shoulder-girdle. The dif- 
ference is of little importance, at least in the Scandi- 
navian fauna, which contains only three of these species. 
THE GREAT PIPEFISH (sw. STORA TANGSNALLAN cl ). 
SYNGNATHUS ACUS. 
Fig. 172. 
Snout comparatively narrow and shallow. Length of the head less than 14 % of that of the body and at most 
24 % of that of the tail , which is more than twice the length of the trunk. Distance between the dorsal fin and 
the tip of the snout at most 39 % of the length of the body, and the length of its base less than 1 / 3 of this 
distance and also less than the length of the head. Length of the marsupium of the male more than twice that 
of the head. Hind margin of the caudal fin rounded. 
B. 
Fig. 172. Syngnathus acus from the Great Fishing-bank, S. W. of Bergen, where the depth was 100 — 150 fathoms, taken by Fisherman 
Andersson of Bobus! fin in 1874. A, of the natural size; B, the head seen from below, natural size. 
R. hr. 2; I). 38-42; A. 3—4; P. (10) 11—12 (13); C. (9) 
10; Vert. 66; Ann. 62 -66 = (20 — 22) + .-r. 
Syn. Syngnathus corpore medio heptagono, cauda pinnata, Art., 
Ichthyol., Spec. Pise., p. 3, No. 3; Lin., Fn. S'uec., ed. I, 
p. 126, No. 336. 
Syngnathus Acus (p. p.), Lin., Syst. Nat., ed. X, tom. I, p. 
337; (“Laminae corporis trunci 20, cauda? 43”); B h., Fiscli. 
Deutschl., pt. Ill, p. 113, tab. XCI, fig. 2; Flmng, Brit. 
Anim., p. 175; Jen., Man. Brit. Vert., p. 484; Yarr., 
Hist. Brit. Fish., ed. 1, vol. II, p. 325; Fr., Vet. Akad. 
Handl. 1837, p. 27; Kr. ( Siphostoma ), Damn. Fiske, vol. 
Ill, i, p. 692, Sund. ( Syngnathus ), Ofvers. Vet. Akad. 
Forh. 1852, p. 85; Nilss., Skand. Fn., Fisk., p. 684; Kp., 
Cat. Lophobr. Fish., Brit. Mus., p. 41 ; Gthr (p. p.), Cat. 
Brit. Mus., Fish., vol. VIII, p. 157; Dum., Hist. Nat. Poiss. 
(Nouv. Suit, a Buff.), tom. II, p. 552; Coll. (p. p.), Vid. 
Selsk. Forh. Christ. 1874, Tillsegsh., p. 200; ibid. 1879, 
No. 1, p. 101; Winth., Naturh. Tidskr. Kbhvn, ser. 3, vol. 
XII, p. 53; Hcke (p. p.), Arch. f. Naturg. 46 (1880), I, 
p. 332; Mor., Hist. Nat. Poiss. Fr., tom. II, p. 42; Day 
(p. p.), Fish. Gt. Bril., Irel, vol. II, p. 259, tab. CXLIV, 
fig. 1; Storm, Vid. Selsk. Skr. Trondhj. 1883, p. 42; Lillj., 
So., Norg. Fisk., vol. Ill, p. 454. 
Syngnathus Typhle, Bl., Fiscli. Deutschl., pt. Ill, p. 112, 
tab. XCI, fig. 1; Malm (p. p.), Ofvers. Vet. Akad. Forh. 
1852, p. 84. 
Ohs. Artedi’s description ( Descr . Spec. P/sc., 1. c.) leaves no 
room for doubt that he really distinguished between the two species 
a Cat. Lophobr. Fish., Brit. Mus. 1856. 
b Hist. Nat. Poiss., tome II (Nouv. Suites a, Buffon, Paris 1870). 
c Cat. Brit. Mus., Fish., vol. VIII, pp. 154 and 155. 
d Fries. 
