THE APSEUDID®E 321 
time supposed to be without exopods on the first two pairs 
of limbs. _ 
Sphyrapus, Norman and Stebbing (in Sars), 1880, has 
only five segments of the trunk free, no antennal scale, 
exopods on the first, and sometimes if not always on the 
second, pair of gnathopods, and five pairs of pleopods. 
Typhlapseudes, Beddard, 1886, ‘the blind Apseudes,’ 
shares a want of eyes with the genus Sphyrapus and with 
some species of Apseudes. Six segments of the trunk are 
free. It has a small antennal scale, but is said to be with- 
out exopod on either first or second gnathopods. ‘There 
are five pairs of pleopods, in which one of the branches is 
two-jointed. 
Leiépus, Beddard, 1886, ‘the smooth-footed,’ has six 
free segments of the trunk, a rudimentary antennal scale, 
a minute three-jointed exopod on the gnathopods of both 
pairs, and five pairs of pleopods, in which one of the 
branches is two-jointed. ‘The type-species, Levopus lepto- 
dactijlus, is described as having three joints to the palp of 
the first maxilla, but ‘the very short median joint’ 
seems open to some suspicion. 
The earliest known species of this family is Apseudes 
talpa (Montagu), first recorded from Devonshire, but also 
occurring in the Mediterranean. From Apseudes Latreilli 
(Milne-Edwards), also a British species, it may be distin- 
guished by the serrate first joint of the first antenne, the 
spines on the epistome and on the ventral surface of the 
pereeon-segments, and the elongation of the last segment 
of the pleon. Other species, such as Apseudes simplici- 
rostris, Norman and Stebbing, ‘taken in 1,263 fathoms, 
about one hundred miles directly south of Rockall, Poreu- 
pine Expedition, 1869,’ and Apseudes grossimanus, Norman, 
from 90 fathoms, long. 11° 40’ W. off the south-west 
coast of Ireland, may be technically regarded as British, 
but these and others in like circumstances seldom come 
into the hands of any students but those who will prefer 
to consult the original memoirs for their characteristics. 
Sphyrapus malledlus, Norman and Stebbing, alludes both 
by its generic and its specific name to the hammer-like 
24 
