134 
Walter M. Tattersall. 
Antennal scale (Fig. 9) short and rather broad ; extending to the 
level of the distai end of the antennular peduncle; about 3 times 
as long as broad; outer margiü entire and terminatine in a strpng 
spine beyond which the apex in not at ali or only very slightly 
produced. 
Genital appendix (Fig. 11) to the 8. thoracic legs of the male 
very long, reaching forwards to the base of the 2. thoracic legs, and 
rather broad with a single curved seta at the apex. 
Pleopods of the male conforming to the usuai type in the genus 
but the setae arming the outer ramus of the 4. pair (Fig. 10) are 
very long, the one on the penultimate joint reaching beyond the 
6. Segment of the pleon. 
Telson (Fig. 12, 12 a) about as long as the 6. segment of the 
pleon, broadly lanceolate in shape, the margins gradually tapering 
to a blunt and broadly rounded apex ; armature consìsting of 6 pairs 
of spines; proximal pair situated four-fifths of the way down the 
telson; the spines increasing in leogth posteriorly; the most posterior 
pair situated on the apex, very nearly equal to one tbird of the 
telson in length; between these latter spiues, a pair of apical setae 
are placed. 
Uropods barely longer than the telson, the outer one very 
slightly longer than the inner; the latter with a single spine on 
the inner ventral margin, at the anterior corner of the otocyst. 
Length of the only 2 specimens, immature but nearly adult 
males, 4 and 5 mm. I bave yentured to describe this species from 
two immature specimens. They are, however, so very nearly adult 
that I do not think their| characters can undergo any very remar- 
kable changes before maturity is reached. The pleopods appear to 
be fully formed, the genital appendices to the 8. thoracic legs are 
well developed and the antennular lobes are already well forward 
in development but as yet without setae. 
The specimens were not dissected so that the structure of the 
mouth parts and thoracic limbs has not been ascerfcained, though, 
indeed, ali but the 1. pair of the latter limbs are broken away in 
both specimens. 
The large and broad genital appendices of the 8. thoracic limbs 
are quite a conspicuous feature of both specimens and quite unlike 
anything I bave noticed in other species of the genus, in point of 
size. They are figured on pi. 7 to the same scale of magnifìcation 
as the other appendages so that their proportional length can be 
