176 ON THE MARINE FAUNA OF ZANZIBAR. | Feb. 17, 
P. claparedt and P. aciculigerus (see fig. 6, of P. elioti). The 
neuropodia also are small. 
List of the Literature. 
(1) Ciuaparrpr.—Annélides du Golfe de Naples, 1868. 
(2) LancerRHANS.—“ Ueber einige Canarischen Anneliden.” Noy. 
Act. der Leop.-Carol. Deutschen Akad. Bd. xliii., 1881. 
(3) McInroso.— Challenger’ Reports, vol. xii., 1885, p. 374. 
(4) Route.‘ Campagne du Caudan.” Ann. d. l'Université de 
Lyon, 1896. 
(5) Lo Branco.—Ann. Tub. nel Golfo di Napoli, 1893. 
(6) Crossnanp.—J. Stanley Gardiner’s ‘Fauna and Geography 
of the Maldive Archipelago.’ In the press. 
EXPLANATION OF THE PLATES. 
Prate XVI. 
Fig. 1. Normal condition of the head of Phyllochetopterus elioti (p. 172), as seen 
from dorsal side. X 10. 
Side view of a specimen whose prostomium and eye-spots are visible. > 10. 
. Side view of three segments of the region B. > 10. 
Ventral view of the same. ’ 
P. pictus (p. 174). Dorsal view of anterior part of body. x 10. 
. Side view of three segments of the region B.  X 10. 
A notopodium of the region C in either species. 100. 
. Sete of P. elioti (p. 172). 
(a) Thickened seta of fourth parapodium. x 83. 
(6) Normal seta from third foot. x 90. 
(c) An uncinus. > 1000. 
9. Setee of P. pictus (p. 172). 
(a) Thickened seta from the fourth foot. > 100. 
(b) Head of a normal seta from the same bunch. 200. 
(c) From last foot of region A. The shaft is bent and part of the head 
finely toothed. x 100. 
(d) One of the uncini. > 1000. 
Puate XVII. 
Fig. 10. Section of Phyllochetopterus elioti (p.172) through the brain, bases of 
short tentacles, &c. 
11. Section a little anterior to fig. 10, through mouth, first feet, &c. 
12. Section at level of fifth foot. 
13. Section near beginning of region B. All sections x 42. 
DAD HH oo wo 
The meaning of the lettering on the figures of the Plates is as follows :— 
b.v.=blood-vessel. n.=nerve, 
cire.m.=circular muscle. n.c.=nerve-cells. 
ce.=ceelum. n.cd.=nerve-cord. 
d.bv.=dorsal blood-vessel. n.f.=nerve-fibres. 
d.cil.=dorsal ciliated groove. neph.=nephridium. 
d.coe.=dorsal division of ccelom. neur.=neuropodium or ventral division 
d.neur.=dorsal division of the neuro- of the foot. 
podia. noto.=notopodium or dorsal division 
e.=eye. of the foot. 
g-=gut. peri.=peristomium. 
gill.=gill- flap between noto- and ppd.=parapodium or foot. 
neuropodia. pro.=prostomium. 
gl.=glandular areas or epithelia s.=seta. 
&e. ¢, & ¢,=first and second pairs of ten- 
Zm.=longitudinal muscle-layer. tacles. 
m.=ruscle. v.bv.=Vventral blood-vessel. 
mo.=mouth. v.neur.=ventral division of the neuro- 
wm. of ppd.= muscles of parapodium. podia. 
