284 A MONOGRAPH OF THE AUSTRALIAN APHRODITEA, 



Lepidonotus Bowerbankii. 



Lepidonotm Bowerhanhii, Baird, 1. c, p. 185. 



Animal six lines in length, and about two broad. The colour 

 is greyish on the back and yellow underneath. Head, antennae 

 and palpi much the same as in the preceding species (Z. stellatus). 

 The bristles of the ventral branch are not bidentate at the point, 

 but are more loosely or longly toothed or serrated below the apex. 

 The bristles of the dorsal branch are slender, and finely serrated 

 and striated across. The elytra are 12 pairs in number, the 

 upper ones nearly round, becoming more ovate as they descend. 

 When seen by the microscope the surface is covered with very 

 minute granulations and the external margin is densely ciliated. 

 They are of a light colour, but speckled all over with, light fawn- 

 colouied spots. \_Baird.'] 



Australia (Brit. Mus.) 



Lepidonotus melanogrammus, sp .n. (PL YIII., fig. 13).) 



The body in this species contains 25 segments with 12 pairs 

 of scales. The mesial tentacle is about thrice the length of the 

 head, and is slightly dilated near the apex. The other tentacles 

 are all of about the same length as the mesial, and are all of 

 similar shape, except the inner peristomials, which are stouter 

 than the others. The parapodia are not divided, and there are 

 no dorsal setce. The ventral setae are similar to those of Thomora 

 argus, with a small tooth near the apex. The anal cirri are 

 situated on a prominent lobe. The elytra, which are situated on 

 the 1st, 3rd, 4th, 6th, and every alternate segment, are rather 

 delicate, smooth, not fringed, marked out into polygonal arese. 

 The cephalic and peristomial tentacles are black, except the bases 

 and the tips which are colourless ; the cirri are banded with black ; 

 the ventral surface is marked with four rows of brown spots. 

 The scales are dark brown on their free portion, light brown on 

 a subcircular space corresponding to the surface of attachment. 

 The length is 1:^ inch ; the breadth f ths of an inch. 



