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rather narrow apex. The outer margin is furnished with three slender setae and one spine. 
The apex bears one sharp pointed spine and one small seta (Plate LXVI, fig. 18). 
Male — length .61 mm. 
The male resembles the female in general appearance, but the antennules are stouter 
and prehensile. The abdomen is composed of five segments. The distal ends of the genital 
segment are furnished with a moveable terminal spine. The principal furcal seta has a mode- 
rately stout basal portion and terminates in a whip-like hair. The fifth pair of feet is less 
contracted than that of the female and the terminal spines less pointed (Plate LXVI, fig. 20). 
The comparatively broad and transparent body, and the shape of the fifth pair of feet, 
readily separate this species from the other two members of the genus. 
Occurrence. — Three females and one male were found in the washings from 
dredged invertebrata collected at Station 164, from a depth of 32 metres. 
This species has a superficial resemblance to Fupelte obfivia, but the endopodite of the 
first pair of feet is quite different. 
2. Alteuthella spinicauda nov. sp. Plate LXVI, figs. 21—29. 
Female — length .75 mm. 
Seen from above, the body appears considerably depressed. It is oblong ovate in outline. 
The greatest width is at the distal end of the cephalic segment and is equal to slightly less 
than half the length of the entire animal. The cephalic segment is moderately large and is 
equal to three-fourths of the rest of the body. The distal ends are slightly produced and 
pointed. The distal ends of the first three thoracic segments are bluntly rounded. The rostrum 
is prominent. The frontal margin is narrowly rounded (Plate LXVI, fig. 21). 
The abdomen is composed of four segments. The genital segment is large and is divided 
into two portions by a well defined suture. The anterior portion is very wide and the distal 
ends are produced posteriorly into blunt points. The posterior portion is much contracted and 
its distal ends are also pointed. The second, third and fourth segments are very short and 
narrow. The furcal joints are very short and broad. The outer portion of the apex is furnished 
with a short stout spine. The base of the principal seta on the inner portion is considerably 
thickened. The distal end is whip-like (Plate LXVI, fig. 26). 
The antennules are seven-jointed and of moderate length. The last three joints are 
comparatively short. 
The antennae, mandibles, maxillae and maxillipedes are similar to those of Alteuthella 
pellucida. 
The first four pairs of feet are also similar to those of that species. 
The fifth pair of feet is moderately broad at the base, but considerably narrowed 
towards the apex. The distal end of the outer margin is furnished with one short, stout, blunt 
pointed spine. The apex bears two short blunt pointed spines (Plate LXVI, fig. 25). 
Male — length .61 mm. 
The male resembles the female in general appearance, but the antennules are moderately 
stout and prehensile. The abdomen is composed of five segments. The furcal joints are short 
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