io8 DISCOVERY REPORTS 



The elytra are borne on segments 2, 4, 5, 7, etc., to 27, after which they occur on 

 every segment. They vary somewhat in shape according to their position in the body. 

 In front they are reniform, but except for the first few segments they are semi-circular 

 with the straight edge to the front (Fig. 14 b). At their most dorsal point there is a 

 single club-shaped papillated process. This club-shaped process is absent from the 

 first few scales and is not fully developed before about the 20th chaetiger. Except on 

 its front face the scale is fringed with long adhesive papillae. These are not continuous 

 on the lower border of the scale. This lower border has a wavy edge, and the papillae 

 are gathered into bunches or tufts attached to the tops of the waves and from the 

 emarginate parts of the border papillae are absent. 



In addition to the marginal papillae the elytra carry numerous adhesive papillae and 

 numerous small grape-like tubercles. The umbilicus is oval. Below each elytron there 

 are a gill and a ctenidium. Above the dorsal ramus of the foot there is a semicircular 

 membrane which may be a second ctenidium, but I have not succeeded in seeing any 

 cilia. 



The foot is triangular (Fig. 14 c-d). The dorsal ramus consists of an enormous fan- 

 shaped bundle of slender barbed bristles situated on the hinder face of the neuropod. 

 The dorsal bristles project almost as far below the ventral ramus as above it. The ventral 

 bristles are variable, especially in regard to the presence or absence of a second tooth on 

 the blades. The most usual arrangement is as follows. At the top of the neuropod there 

 are usually about half a dozen bristles with rather long and slender blades with 

 unidentate tips (Fig. 14 e). Below these the bristles are bidentate and the blades 

 become rather stouter and shorter from above downwards as far as a short distance 

 below the aciculum (Fig. 14/). Below this and standing a little apart from the rest there 

 is a bundle of much more slender bristles with long and delicate bidentate blades 

 (Fig. 14^). The articulation is heterogomph throughout, and the tops of the shafts are 

 heavily denticulated. 



At the base of the chaeta-sac there is a tuft of filiform processes that I take to be 

 stylodes. The tapering ventral cirrus reaches to the end of the foot. 



Remarks. This species is related to P. antipoda (Schmarda), from which it differs in 

 having no filiform papillae on the ventral surface and also in having the lower margin 

 of the elytra wavy with the papillae gathered in tufts. In fact there is to my knowledge 

 no other Psammolyce which has this combination of characters. 



Genus Sthenelais, Kinberg 



A long median tentacle with ctenidia at the base. Lateral tentacles reduced to small 

 papillae on the dorsal surface of the first foot. Branchiae on every foot except the first 

 few. Dorsal bristles spinous capillaries. Ventral bristles compound falcigers and also 

 a few simple barbed chaetae. 



Sthenelais limicola (Ehlers), var. novae-zealandiae, var.nov. (Fig. 15). 

 Occurrence. St. 936, New Zealand (3). 



