Clare Island Survey — Arcldannelida and Poh/chaeta. 47 1 ; :> ; j 



and A. intermedia Fauvel, though its absence may in some other cases have 

 been due to accident, as it is easily detached. In the latter case a careful 

 search will reveal the fractured base of the cirrus. In other respects the 

 anal funnel of these two species differs widely from that of A. flagellifera. 



In the specimen from Galway Bay, the proboscis is partially protruded 

 (fig. 31 b). It projects as an arched membrane over the mouth, and is fringed 

 with 13 slender papillae. A similar structure does not seem to have been 

 noted in any other species of Armandia, Kukenthal 1 gives a figure of the 

 extended proboscis of A. pohjophthalma. It is a globular lobate organ, without 

 any papillae, and de Saint-Joseph states (1894, p. 115) that A. Dollfusi 

 resembles A. polyophihalma in this respect. 



The feet are situated on the upper and outer sides of the ventro-lateral 

 ridges. There is a rounded setigerous lobe (fig. 31 d) from the upper and 

 lower margins of which emerge the dorsal and ventral setae respectively. 

 The dorsal cirri are long, slender, and tapering, the ventral cirri short and 

 finger-shaped. 



The setae are longitudinally striated, and are easily fractured into a bundle 

 of long, slender needles. In the specimen from Ballynakill, the setae are all 

 frayed out in this manner. 



In the dorsal division of the foot there are 7-8 long flat setae, the upper 

 ones being the longest. In the ventral division there are 9-10 similar setae, 

 almost equal in length, but shorter than the dorsal setae. 



In the posterior nine or ten segments, the setae are greatly elongated, 

 exceeding the anal funnel in length. 



This species is easily distinguished by the shape of the head, absence of 

 eyes, structure of the anal funnel, especially by the presence of the median 

 ventral cirrus, and by the papillae on the proboscis. 



Habitat.— Ballynakill Harbour — A single specimen taken in the surface 

 tow-net at night. 



Another specimen was dredged in 11 fms. in Galway Bay, living in 

 sand. 



Polyophthalmus pictus (Dujardin). 



1898. Polyophthalmus pictus. De Saint-Joseph, p. 385. 



This species is extremely common in the littoral and shallow-water areas 

 of the west coast of Ireland. It is found in weeds from rock-pools, in Zostera 

 beds, Laininaria roots, and is dredged on all types of ground, except clean 

 sand and mud. 



1 Jenaisclie Zeitschvift, Bd. xx, 18S7, Taf. xxxiii, fig. 28. 



