LAND PLANARIANS FROM LORD HOWE ISLAND, 49 



miclclle ones being more prominent than the outer ones and enclosing anteriorly 

 a median light line of ground colour. The dark lines fuse at the anterior extremity 

 leaving the margins of the body light coloured. The two eyes are placed in the dark 

 lines where the four have fused close to the anterior end. The posterior three quarters 

 of the body are marked by irregular, undulating, disconnected, dark lines the more 

 prominent of which seem to form a broken up continuation of the two inner of the 

 stripes. A median portion nearly one-third of the width of the surface is light 

 coloured and there is present in this a median thin dark line made up of slightly 

 discontinuous parts. The streaks have a tendency to form four lines at the very 

 posterior end. Ventral surface pale cream colour with no streaks. Pharynx 36 m.m. 

 from the posterior end. Genital opening 12 m.m. from the posterior end. 



Locality.— Lord Howe Island. (Coll. Mr. T. Whitelegge.) 



The length of the animal when alive is 4-6 inches. The spirit specimens are all 

 much coiled and vary somewhat in marking especially in the distinctness of the four 

 stripes anteriorly and in the development of the thin dark median stripe. In one or 

 two this is very difficult to detect and it may be very irregularly developed. It is not 

 apparently at all prominent diiring life. The characteristic features are the lines 

 giving place to streaks posteriorly and the entire absence of markings on the ventral 

 surface. 



Rhynchodemus fletcheri, sp. n. (PL VI., Figs. 26, 27.) 



Dorsal surface with median light line and two broad black bands one on either side 

 of this. Lateral portions of body and ventral surface light coloured. Ventral surface 

 with two lateral dark lines and median broad punctated band not extending quite to 

 the anterior or posterior ends and showing indication of division into two lines. 

 Anterior extremity bluntly rounded with- eyes dorsal and close to the anterior edge. 

 Pharyngeal opening 8 m.m. from the posterior end ; genital opening 3 m.m. from 

 the posterior end. 



Locality.— Lord Howe Island. (Coll. Mr. T. Whitelegge.) 



The animal when alive measures 25 m.m. in length the spirit specimen 

 measuring 19 m.m. In the latter the pharyngeal opening has the form of a transverse 

 slit with a light margin lying in the middle of the median dark band ; the genital 

 opening is distinct and more noticeable than the pharyngeal and has a light- 

 coloured circular margin the dark band being divided in its region into two by a 

 median light line. 



The body in spirit specimens is somewhat flattened and band like the anterior end 

 blunt and rounded the posterior more pointed. 



The median dorsal line swells out slightly on the head and does not quite reach 

 the posterior end. 



