364 PERCY SLADEN TRUST EXPEDITION. 
detailed description is given by Gravier *. Dorsally is seen the conical slightly developed 
caruncle with a tiny median tentacle at its base. (This was not observed by Gravier in 
his specimens, but he concluded that it had been lost.) A rounded median head succeeds, 
which is divided by a longitudinal furrow, and bears a single pair of indistinctly marked 
eyes. From underneath these last spring the stumpy cylindrical lateral tentacles, 
larger than the median tentacle and palps. Ventrally come the conspicuous buccal 
lips, pressed together to form a heart-shaped mass. At the sides of these arise the small 
palps. 
The dorsal and ventral setigerous lobes of the parapodia (Pl. 46. fig. 14) are widely 
separated by a curved inflated surface. The former bears anteriorly the small 
compact gill-tuft almost masking the short dorsal bundle of sete, which the filiform 
dorsal cirrus exceeds in length. The ventral lobe is composed of a bundle of sete of 
superior length to the dorsal and possesses a ventral cirrus similar to, but rather thicker 
than, the dorsal organ. The parapodium of 4. maldivensis almost exactly resembles 
that of A. djiboutensis (see Gravier, ¢.c. text-fig. 249). 
The setze are in rather marked contrast to such a form as A. rostrata, being fine, 
slender, and of a greenish hue. Dorsally are found a few hooked smooth setz (these 
may perhaps be compared with Gravier, text-fig. 253, which, however, is straight and 
symmetrical), and a great number of setz regularly diminishing to a point, slightly 
more slender than the first kind and provided with twenty or more serrations along one 
side (Pl. 46. fig. 12; of. Gravier, text-fig. 251, but has larger number of serrations). 
Capillary setee much finer than the others and half as long again occur in quantity. 
They end in a rather fine rounded point, but with high powers one or two denticulations 
can be made out under it (cp. Gravier, text-fig. 252). The ventral sete differ in 
the anterior and posterior regions of the body. Anteriorly is found a slender hooked 
seta, generally distinctly serrated under the apex, but may be smooth; at some distance 
from the end of the serrations is a well-defined spur (PI. 46. figs. 14-16; ef. ventral sete 
of Hermodice carunculata). This form does not appear to exist in A. djzboutensis. 
Posteriorly there is a similar kind of seta, but the apical hook is more distinct, the 
serrations are not well marked, and the spur is absent, while it has a stouter character 
(Pl. 46. fig. 17). In both regions are short thick supporting sete, attaining their 
greatest thickness some distance from the apex, and diminishing to end in a rounded 
brown point (ep. Gravier, text-fig. 256). 
Gravier remarks of the Red Sea species that it belongs to the group of species of 
Amphinome with a very reduced caruncle and ill-defined gills, to which Quatrefages 
gave the name of Linopherus, and that it has affinities with 4. (Lenora) philippinensis, 
which possesses, however, filiform gills and no palps, though the sete appear to have a 
similar facies. ‘The foregoing description of 4. maldivensis emphasises the resemblance 
to A. djiboutensis, which differs, indeed, only in certain points connected with 
the sete. 
Locality. 2 specimens from Hulule, Male, Maldives. 
* Gravier, Nouy. Arch. de Mus. d’Hist. Nat. sér. 4, t. iii, 1901, p. 245. 
