44, TURBELLARIA OF PLYMOUTH SOUND. 
40, CYLINDROSTOMA INERME (Hallez). 
In dredgings taken from the Duke Rock, Millbay Channel, and 
the Hamoaze. 
41, CyLiInpRosToMA ELONGATUM Levinsen. 
Tide-pools, Wembury Bay. 
Genus 18.—MonoopHorvuM. 
42, MoNnoopHoRuUM sTRIATUM (v. Graff). 
A single specimen of this characteristic species was dredged off 
the Duke Rock. 
Family MONOTIDAS. 
Genus 19.—Monortus. 
43, Monorus tingatus (O. F. Miller). 
Not uncommon amongst Ulva in the neighbourhood of Redding 
Point. 
44, Monorus ruscus (Oersted). 
Abundant among Balani, Ulva, and generally throughout the 
littoral zone. 
45, Monotus atpus Levinsen. 
In tide-pools below Picklecombe Fort. 
Genus 20,—AUTOMOLUS. 
46, AUTOMOLUS UNIPUNCTATUS (Oersted). 
Rarely amongst algee, Duke Rock. 
47, Avromotos HorRIDUS Gamble (“ British Marine Turbellaria,” 
p. 491). 
A single specimen in the Hamoaze. 
48. (?) AuromMoLos opHIocHPHALUS (Schmidt). 
Millbay Channel. For a discussion of the probable relations of this 
form see my paper, pp. 492-3. 
