EEPORT ON THE ANNELIDA. 
333 
A min ute form about 1 mm. in diameter, in which the median is considerably shorter 
than the adjoining tentacles. The other processes (including the tentacular cirri) are 
absent. No eyes are present. 
The maxillae (Fig. 85) are much curved, and there is a marked constriction of the 
posterior processes immediately behind the point of junction. The processes are pointed 
posteriorly and the tip of each is dark brown, while a bar of brown pigment also exists 
behind the maxillae. The left great dental plate has six teeth, the right eight. The 
left lateral paired plate has six, the unpaired six. The right lateral shows seven. The 
mandibles (Fig. 86) have curved shafts, and, the cutting edge presents a denticulation or 
Fig. 85. — Maxillae and dental plates of Nothria quadricuspis (M. Sars) ; x 55 diameters. 
Pig. 86. — Mandibles of the same species from the ventral surface ; x 55 diameters. 
two, somewhat symmetrically arranged. The entire apparatus is somewhat soft. The 
dental apparatus was not examined minutely by Sars. 
The body has the usual structure, and the branchiae commence as simple processes on the 
ninth foot, in which, as in other respects, it agrees with a specimen dredged by the Eev. Dr. 
A. Merle Norman off Bergen, Norway, and with the descriptions and figures of M. Sars, as 
given from his unpublished manuscripts by G. 0. Sars. The specimen is evidently a 
young form, and only about twenty-five segments are present. The branchiae therefore 
have not attained full development. The highest number of divisions is four, whereas 
five are present in the Norwegian example. 
