43 
to be somewhat rectangular, not acute angled. — In a ^ with 
ova (6 mm), from Voer (5 — 6 miles from the rhouth, 0.5 m, salinity 
5%o) the inner ramus of up 3 is not more than half as long as 
the first joint of the outer ramus; the proportions in the two an- 
tennæ correspond mostly with those of G. locusta. Localities see 
p. 49. 
On a specimen of G. Zaddachi from S. Greenland, see K. Ste- 
phensen, Zoogeogr. Invest, in S. Greenl.; Meddel, om Grønl., 
vol. 53, 1916, p. 293. 
Intermediate form between Gammarus locusta L. 
and G. locusta L. var. Zaddachi Sexton. 
Most of the specimens belonging to the genus Gammarus from 
Randers fjord cannot be determined either to G. loc. or to G. 
loc. var. Zadd., but have cha- 
racters common to both. Such 
specimens are found over the 
most of the fjord, from Tjæ¬ 
reby Bredning (1 mile E. of 
Randers) right to the mouth, 
but mostly from the Hollands- 
bjerg Flak to the mouth. Most 
of the specimens are found 
in shallow water, 0—0 5—2 
m, salinity (2)6 —18 Voo; a 
few are found at greater depths, 
3—9 m, salinity 18—24 %o. 
As type I take a , 20 
mm (fig. 5) from the mouth 
of the fjord, 5-—7 m, abt. 23 
«'oo salt. The following points fom. bet«-.,.,. Gamma,us 
are as in G. locusta: the ce- locusta and Gammarus locusta var. Zaddachi. 
, , . , j , r? > 20 mm, from the mouth of the fjord. 
phalon with antennæ and the ° 
proportions in the two pairs of antennæ; only some single hairs 
on the underside of first joint of ant. 1 ; chela of p 1 (but chela 
of p2 about as in G. Zadd.); the breadth of 4. joint of p5—p7 
which correspond with Sars’ fig. of G. locusta. — The following 
