MALDANIDAE 169 



Remarks. Anvidsson separates this variety from the northern stem-form on sHght 

 differences in the distribution of the glandular areas on the ventral surface of the anterior 

 region, and on the relative shortness of the main fang of the hooks. The grounds of 

 separation seem very slight. 



Genus Lumbriclymenella, Arwidsson 



Head without a cephalic border. Nuchal organs V-shaped. Ventral acicular bristles 

 in the first four chaetigers. Dorsal bristles of two kinds. Pygidium obliquely truncated 

 with no cirri, plate or border. Anus more or less dorsal. 



Lumbriclymenella robusta, Arwidsson. 



Anvidsson, 191 1, p. 3, pi. i, figs. 1-4; pi. ii, figs. 32-36. 

 Fauvei, 1916, p. 456. 



Occurrence. St. WS 765 (3); WS 771 (3); WS 877 (i juv.). 



Specific characters. A rather slender species measuring 2-3 mm. in breadth. None 

 of my specimens is complete. The dorsal surface of the anterior end is strongly pig- 

 mented with reddish brown colour. The nuchal organs are V-shaped. There are 19 

 chaetigers and three achaetous ante-anal segments. The first four chaetigers have ventral 

 acicular bristles in place of hooks. The dorsal bristles are of two kinds, a rather shorter 

 kind with the border more developed on one side than on the other, and a longer, more 

 slender kind with striated tips. The ventral hooks show about three teeth in profile 

 above the main fang. 



The anus is upturned and dorsal and beyond it there extends ventrally a short 

 tongue-shaped process. 



Remarks. As Fauvei has already pointed out, the genus Lumbriclymenella is dis- 

 tinguished from Lnmbrklymene only by the possession of V-shaped instead of U-shaped 

 nuchal organs and a rather more dorsal anus, characters which are scarcely of generic 

 status. 



Genus Asychis, Kinberg 



Head an oval or rounded plate fringed by a border divided into three sections by a 

 pair of deep lateral incisions. No raised keel. Nuchal organs large and curved. Dorsal 

 bristles of three kinds. Uncini, absent from the ist chaetiger, begin on the and. 

 Achaetous, ante-anal region rudimentary. Anus dorsal. Pygidium in the form of a 

 slanting plate fringed by a border divided by a pair of lateral incisions. The border may 

 be smooth or crenate. 



Asychis amphiglypta (Ehlers) (Fig. 31). 



Maldane amphiglypta, Ehlers, 1897, p. 119, pi. viii, figs. 187-193. 



Asychis amp/iiglypta, Arwidsson, 191 1, p. 35, pi. i, figs. 27-31; pi. ii, figs. 55-58. 



Monro, 1930, p. 172. 



Occurrence. St. 30 (4); WS 777 (5). 



