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The distal ends are provided with small points. The segment is one and two-third times longer 
than the combined length of the next two segments. Its length is rather shorter than the 
united length of the next two segments and furcal joints. The second and third segments are 
sub-equal in length. The distal end of the third segment is decidedly expanded. The furcal 
joints are three times longer than the anal segment. Each joint is furnished with one outer 
marginal seta and five apical setae. The middle apical seta is shorter than the others (Plate 
LAW TIES ate 23) 
The antennules are four-jointed and are equal to two-fifths of the leneth of the cephalothorax. 
The fifth pair of feet is long and slender and is without apical division. The apex is 
furnished with two moderately strong setae (Plate LVIII, fig. 4). 
This species is readily recognised by the reticulated exoskeleton and by the long slender 
fifth pair of feet. 
Occurrence. — One female was found in the plankton collected at Station 142, off 
Laiwui, coast of Obi Major. 
8. Monstrilla turgeda nov. sp. Plate LVIII, figs. 5 and 6. 
Female — length 2 mm. 
Seen from above, the body appears rather short and is moderately robust. The cephalic 
segment is greatly inflated just behind the frontal margin. It is slightly longer than the posterior 
part of the animal. The frontal margin is broad and boldly rounded. 
The abdomen is composed of three segments. The genital segment is sub-quadrangular 
in shape and is traversed near the middle by a distinct suture. It is one and a half times 
longer than the combined length of the next two segments. The segment is nearly as long as 
the united length of the next two segments and furcal joints. The second and third segments 
are sub-equal in length. The furcal joints are slightly longer than broad and are about one 
and a half times longer than the anal segment. Each joint is furnished with one outer marginal 
seta and five apical setae. The apical setae are sub-equal in length (Plate LVIII, fig. 5). 
The antennules are four-jointed and are equal to one-third of the length of the 
cephalic segment. 
The fifth pair of feet is moderately long and rather slender. The apex is bi-lobed. The 
inner lobe is narrower than the outer lobe and extends beyond the apex of it. It is furnished 
with one seta. The outer lobe is furnished with three setae (Plate LVIII, fig. 6). 
This species can easily be separated from the other members of the genus by the very 
tumid cephalic segment, and by the shape of the fifth pair of feet. 
Occurrence. — Two females were obtained from the plankton collected at Station 
142, off Laiwui, coast of Obi Major. 
Genus Thaumaleus Kroyer, 1849. 
The members of this genus are closely related to J/oustrzlla in general appearance, in 
the jointing of the antennules, in the entire suppression of the antennae, mandibles, maxillae 
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