GOBIES. 
26 1 
JEFFREYS’ GOBY. 
GOBIUS JEFFREYSII. 
Fig. G8. 
Base of the second dorsal fin about equal in length to the peduncle of the tail , the least depth of which is about 
7 % of the length of the body. Eyes superiorly only slightly separated from each other, their longitudinal dia- 
meter being about 30 % of the length of the head. Number of scales in a row (dong the sides of the body about 
28, and in a transverse row at the beginning of the ana! fin about 6. Forehead and occiput naked, throat in front 
of the ventral fins scaly. Six or five rays in the first dorsal fin, the second ray being elongated in the male. 
Funnel formed by the ventral fins complete. Caudal fin somewhat pointed. Ground-colour of the body greenish 
yellow, with five black sqtots in ci row (dong the middle of the sides. 
D. (5) 6y, A. P. 16 ]. 17; V. 1 C. x + 1 1 ( + 1) + «; 
L. lat. circ. 28. 
Syn. Gobius Jeffreysii , Gthr, Arm. Mag. Nat. Hist., ser. 3, voi. 20, 
p. 290, tab. V, fig. C; ser. 4, vol. 13 (1874), p. 139; 
Coll., Forh. Vid. Selsk. Christ. 1874, p. 159; ibid., Til- 
la?gsh., p. 54; Lillj., Sv., Norg. Fisk., vol. I, p. 587. 
Gobius quadrimaculatus , Day, Fish. Gt. Brit., Irel ., vol. I, 
p. 168, tab. LIIL fig. 2 (nec Kisso, Canestrini, cett.?). 
? 
Jeffreys’ Goby, with its body of fairly uniform 
depth, but still ^elongated and laterally compressed in 
the caudal part, is ranged by the scales on the throat 
(the front part of the belly) as an intermediate form 
between the preceding species and the following one. 
Its other chief distinctions are the large scales, the de- 
pression of the head in typical specimens and the some- 
what sharply upturned eyes. Roth nostrils on each 
side of the snout are surrounded by a raised margin 
and set in a swelling common to them both, just in 
front of the middle of the anterior margin of the eye. 
Just behind them and nearer the middle of the snout 
lies a large pore belonging to the supraorbital branch 
of the system of the lateral line, which is furnished 
with other similar pores behind the eyes and in the 
temporal line on the parietal bones. The length of the 
lower jaw (about 1 0 1 / 2 % of the length of the body 
and 45 % of that of the head) is apparently greater 
than in our other small Gobies, and is distinctly more 
than V 3 °f the distance between the beginning of the 
first dorsal fin and the tip of the snout. In this last 
respect Jeffreys’ Goby corresponds to Gobius niger and 
Gob. Friesii , but even here we find intermediate forms, 
such as those taken by Theel and Tkybom at a depth 
of from 10 to 17 fathoms, on Lilia Middelgrund (a sand- 
bank in the Cattegat), among them being a specimen 
with 7 rays in the first dorsal fin". These forms may 
be referred with about equal justice to Gobius fiavescens. 
Gob. Jeffreysii or Gob. minutus, unless we choose to 
follow the method hitherto adopted, and found new 
species on such examples 6 . 
due 
° In the specimen of Gobius Jeffreysii taken by Lilljebop.g at Haugesund, there are only 5 rays in the first dorsal fin, this being 
to the stunted development of the last ray. 
b Day has established one such species under the name of Gobius Parnelli (Fish. Gt. Brit., Irel., vol. I, p. 167, plate LII, fig. 5). 
