606 IVAR TRAGARDH 
from the sternal shield as well as from the coalesced peritrematic and para 
podial shields by a narrow but very distinct suture (fig. 114). | 
Anal aperture small, situated near the posterior margin. The coalesced 
parapodial and peritrematic shields are separated from the dorsal shield by a 
distinct suture running forwards as far as to a level with the anterior margin 
of coxe III. The posterior angle is triangular and projects almost to the 
middle of the ventri-anal shield. The suture dividing it from the dorsal shield 
continues a little beyond the point where it meets the ventri-anal suture. 
The legs. Legs II larger and thicker than the others; femur with a 
conical calear femoralis (fig. 113) at the anterior end, slightly curved forwards. 
Genu with small, tooth-shaped projection at the anterior end. 
Mouthparts. Epistome (fig. 117) triangular, with pointed median mucro; 
there is a pair of lateral very blunt teeth, separating two rounded excavations 
of the margin. 
Mandibles (fig. 111) with upper jaw slightly longer than the lower one, 
rather narrow, with only slightly curved, blunt terminal tooth; the cutting edge 
has only one short and broad tooth in front of which pilus dentarius is in- 
serted. Lower jaw with strong terminal tooth, less curved than that of upper 
jaw; cutting edge with one sharp tooth with perpendicular posterior side oppo- 
site that of lower jaw. 
Calcar mandibuli longer than in other species of the genus, of uniform 
width throughout and curved sharply downwards like a hook in front of the 
chela. 
Female. 
Length 860—880 uw, width 620 uw. 
Shape a little broader than in the male. 
Colour and texture the same as in the male. 
Ventral side (fig. 116). The configuration of the ventri-anal, para- 
podial and peritrematic shields is the same as in the male. Jugular 
shields narrow, triangular. Sternal shield with deep, rounded excavation 
almost as far as to anterior edge of coxe III. Four pairs of sternal hairs, one 
pair near the anterior margin, halfway between the centre and the sides, one 
pair laterally, a little in front of the hind margin of coxz II, the third pair in 
the same position in relation to coxee III; the fourth pair of hairs is inserted 
near the median line a little in front of the second pair of hairs. 
This is a very unusual position for sternal hairs, but in G. pzlosellus BERL. 
(1913, fig. 26 pl. 3), G. elegantellus BERL. (I. c. fig. 27 pl. 3) and G. elonga- 
tellus BERL. (I. c. fig. 28 pl. 3) this pair has the same position, so it must be 
a generic character. BERLESE has, however, omitted to delineate the anterior 
pair of hairs, which undoubtly is present in all species. 
The genital shield is large, with semicircular anterior margin, and has 
two pairs of transverse oval depressions, where the cuticle is thin and more 
light-coloured; near the posterolateral angles there is a pair of small hairs. 
Mouthparts. Mandibles (fig: 115). Lower jaw with powerful, blunt 
terminal tooth, cutting edge with three sharp teeth increasing in size back- 
wards, the distance between the two anterior teeth being half the distance be- 
tween the median and the posterior tooth. 
