The Schizopoda collected by the Maia and Puritan in the Mediterranean. 129 
Telson (Fig. 6, 6 a) rather short, about three quarters as long as the 
last Segment of the pleon and one quarter longer than broad at ita 
base; triangulär in shape with the lateral margins tapering evenly 
te a very narrow apex armed with 4 minute spines the terminal 
pair of which are somewhat longer than the others; median setae 
absent; lateral margins unarmed. 
Inner uropods one third as long again as the last segment of 
the pleon and rather more than twice as long as the telson; a 
single spine on the ventral face at the posterior inner corner of the 
otocyst but no row of spines along the inner margin; otocyst rather 
small. 
Outer uropods about one and a half times as long as the last 
segment of the pleon. 
Length of the largest specimen, a male 5,5 mm from the rostrum 
to the apex of the telson and 7 mm from the distai extremity of 
the antennular peduncle to the tip of the outer uropods. 
Ali the specimens of this species are very small and I cannot 
be sure vrhether they are quite mature. The largest specimen, the 
above mentioned male, 5,5 mm in length, had the pleopods fully 
formed and seems in ali other respects completely adult, but it lacks 
entirely the hirsute lobe on the antennular peduncle, so characteristic 
of males in this and allied genera. There is a slight elevation on 
the ventral face of the distai joint of the antennular peduncle which 
is, however, devoid of hairs. 
Dr. Lo Bianco identified this species with the northern P. obesa 
G. 0. Sars. While certainly closely allied to the latter, there can 
be no doubt, I think, of its separate specific identity. The species 
is dedicated to the distinguished Italian naturalist who first made 
known the presence of this genus in the Mediterranean. 
P. lohiancoi may be distinguished from P. obesa by the follow- 
ing characters: — 
(1) size. Adult P. obesa reach to a length of 13 mm. 
(2) length of the last pleon segment. In P obesa the last 
pleon segment is only about one and a half times as long as the 
fifth. In P. lobiancoi it is twice as long as the fifth. 
(3) The carpus of the 2. thoracic limb is longer than the merus. 
In P. obesa the reverse obtains. 
(4) The telson is shorter than in P obesa, the terminal spines 
mueh smaller and median setae entirely wanting. 
