NO. 5 HARTMAN : POLYCHAETOUS ANNELIDS 499 



originally described for this species (Fauvel, 1919, fig. 4) or also the 4 

 eyes for A. gorgonensis (Monro, 1933, p. 26). Each consists of a clear 

 lens and a crescentic mass of dark pigment but the latter may be more or 

 less completely diffused or even somewhat broken so that a single eye 

 may appear as 2 smaller, contiguous ones. 



The paired palpi are in front of, and beneath, the prostomium. The 

 palpostyles are smooth, massive, directed forward and terminate in sub- 

 globular palpostyles. At the outer side of each palpostyle, near its base, 

 is a small rounded boss or papilla. The peristomium or first segment is 

 provided with 2 pairs of fusiform cirri. The dorsal pair is slightly larger 

 than the ventral one. The anterior margin of the peristomium is straight. 



The proboscis, everted in one individual, is cylindrical in shape, about 

 one and one-half times as long as wide and it terminates distally in an 

 edge that is nearly smooth except for a low, fleshy boss on either side. 

 Proximally its surface is smooth and glistening. No jaws or other arma- 

 ture have been identified. 



Parapodia are similar to one another throughout the body except for 

 larger or smaller size, depending on their location and on the width of 

 the body where they occur. Typically they consist of spindle-shaped dor- 

 sal and ventral cirri and a tioincate setigerous neuropodial lobe. Dorsal 

 cirri resemble ventral cirri but are slightly the larger. Both have a con- 

 stricted base and an attenuate tip (pi. 62, fig. 6). In addition the noto- 

 podium is represented by single, embedded, j^ellow acicula that are 

 pointed distally, and single heavy acicular spines that appear straight 

 distally when seen from the front but are slightly bent when seen from 

 the side (pi. 62, fig. 3). The acicular spines are somewhat more con- 

 spicuous in posterior than in median segments because they project from 

 the parapodium for a slightly greater distance. The notoaciculum tends 

 to extend distally to the base of the dorsal cirrus or it may go somewhat 

 beyond ; the acicular spine extends a considerable distance from the noto- 

 podial tissue, especially far back in the body (pi. 62, fig. 2). 



Neuropodia are provided with 2 embedded acicula which may be 

 subequal in size or the ventral one may be the larger; the projecting setae 

 are of 2 kinds. Most of the setae are long, slender, distally pointed, dis- 

 posed in superior and inferior fascicles of about 4 in each. They are 

 arranged in a whorled tuft. In addition all parapodia or at least from 

 the second one, have 1 or 2 furcate setae in the middle of the fascicle 

 (pi. 62, figs. 6, 7). This arrangement is continued throughout the body. 



The pointed neurosetae consist of a long, nearly cylindrical shaft and 



