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angle of the apex of the joints is produced internally into a small tooth-like process. It is also 

 furnished with a short seta. The inner portion of the apex is slightly produced. It bears one 

 moderately long and four short setae. The animal is very transparent (Plate LXVI, fig. i). 



The antennules are composed of seven joints. The last three joints are much shorter 

 than the others. The fourth joint is furnished with a moderately long sensory filament. 



The antennae are comparatively small. The apex of the last joint of the endopodite is 

 furnished with one very strong spine provided with a rhinute secondary spine near the base, 

 and three very slender setae. The endopodite is small and one-jointed. It is furnished with 

 four setae (Plate LXVI, fig. 3). 



The mandible is slender and its biting edge is very feeble. The palp is two-branched 

 and each branch is one-jointed (Plate LXVI, fig. 4). 



The maxillae and first pair of maxillipedes are similar to those of Altcutlia depressa. 



The second pair of maxillipedes is comparatively powerful. The second joint is long 

 and rather narrow. The terminal claw is short and stout (Plate LXVI, fig. 7). 



The exopodite of the first pair of feet is composed of three joints. The first and second 

 joints are of nearly equal length. The third joint is very small. It is furnished with one short 

 stout curved claw and two very small setae. The endopodite is two-jointed. The second joint 

 is considerably shorter than the first joint (Plate LXVI, fig. 8). 



The exopodite and endopodite of the second, third and fourth pairs of feet are three- 

 jointed. The outer marginal spine on the first joint of the exopodite of the fourth pair of feet 

 is distinctly longer, and stouter, than the outer marginal spine on the first joint of the exo- 

 podite of the second and third pairs of feet (Plate LXVI, fig. 9). 



The fifth pair of feet is composed of a single moderately large lamelliform joint. It 

 is rather wide at the base. The apex is very narrow. The joint is furnished with four outer 

 marginal and two apical setae. The proximal end of the inner margin bears a small tubercle 

 carrying two slender setae (Plate LXVI, fig. 10). 



Male — length .64 mm. 



The male resembles the female is general appearance, but the antennules are rather 

 stouter and prehensile. The abdomen is composed of live segments. The genital segment is 

 produced posteriorly and terminates in a short moveable spine. The outer angle of the furcal 

 joints has a short spine instead of the seta in the female. 



The antennae, mandibles, maxillae and maxillipedes are similar to those of the female. 



The five pairs of feet are somewhat similar to those of the female. The fifth pair of 

 feet is proportionally shorter than that of the female (Plate LXVI, fig. 12). 



The female differs from the species described by Claus in the external appearance, in 

 the shape of the rostrum, and in the structure and armature of the fifth pair of feet. 



Occurrence. — Five females and four males were found in the washingrs from dredeed 

 material collected at Station 164, at a depth of 32 metres. 



Genus Alteuthella nov. 



The body is comparatively short and depressed. The exoskeleton is thin and moderately 



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