98 DR. COLLINGWOOD ON MARINE PLANARIANS. 



Genus Stylochoplana, Stim. ■ 



29. Stylochoplana elegans, Kel. 



Length 1| inch. 

 Upper surface pale yellow, shaded with greenish brown, and dotted with black ; margin 



black, lined with orange. 

 Under surface whitish, with brownish margin. 

 Tentacles two, small, reddish, tipped with red, occipital. 

 Fig. 29. Upper surface. 



30. Stylochoplana meleagrina, Kel. 

 Length If inch. 

 Upper surface striped with broad streaks, the inner pure white, the others light purplish 

 and whitish ; the median line brownish red, edged with black ; the margin waved and 

 edged narrowly with black. 

 Tentacles small, oval, occipital. There are also two linear appendages on the occipital 



region above the eye-spots. 

 Fig. 30 : a, upper surface ; b, under surface. 



Genus Planocera (Blainville). 



31. Planocera thesea, Kel. 

 Length 1^ inch. 

 Ipper surface chocolate-brown, edged with yellow. 

 Under surface pale purple, darker towards the margin. 

 Tentacles white, tipped with red, rising from depressions or cups placed near the middle 



third of the body. 

 Ifoutli central. 

 Fig. 31. Upper surface. 



[Editorial Addendum, with Explanation of Plates XVII. to XIX. 



The figures in the three Plates are consecutively numbered, and correspond with the numbers and 

 references appended at the close of each description of the species in the text. The original drawings of 

 figs. 1 to 12 (PI. XVII. and part of PI. XVIII.) were designed by Dr. Cuthbert Collingwood ; those of figs. 

 13 to 31 (part of PL XVIII. and the whole of PI. XIX.) are by Dr. Kelaart. Owing to the protracted 

 absence of Dr. Collingwood abroad, the proof sheets have not had the advantage of his revision. This 

 has unfortunately led to a discrepancy in the lettering in the plates. It was originally intended that the 

 author's own newly described species should be distinguished by Arabic, and Dr. Relaart's by Roman 

 numbers ; but the artist has not carried out this minor matter of detail. The lettering in the text has 

 not been altered to correspond with the artistic error in the plates, which were printed o.ff before the 

 correction of proof sheets was undertaken. 



