LAND PLANARIANS FROM LORD HOWE ISLAND. 45 



The sucker placed on the ventral surface at the anterior end is distinctive of 

 this genus and the somewhat spathulate form of the head together with the crenate 

 antero-lateral margins are characteristic of the species. It is possible that this 

 crenate appearance may be due to the presence of tentacular structures retracted in 

 the spirit specimens but Mr. Whitelegge makes no remarks in his notes of the 

 presence of any such nor do I think that they are anything more than crenations. 



I have much pleasure in naming the first species of this genus described after 

 Mr. "Whitelegge, and am now engaged in studying its anatomy an account of which 

 will form Part II. of this paper. 



Cotyloplana punctata, sp. n. (PI. L, Figs. 5, 6, 7, 8.) 



Body flattened with the posterior half somewhat wider than the anterior half. 

 Sucker on the ventral surface close to the anterior end, circular in outline, margin of body 

 smooth. Eyes two, placed close to the anterior extremity. Dorsal surface except 

 the lateral margins mottled with brown spots and with a median light line which may 

 or may not extend the whole length. Ventral surface mottled except along the lateral 

 margins and around the sucker, and somewhat lighter than the dorsal surface. 



Pharyngeal opening 9 m.m. from the posterior extremity; genital openhag 

 4 m.m. from the posterior extremity. Length when alive 50 m.m. Length in spirits 

 42 m.m. 



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



This species differs considerably from C. ivhiteleggei in the shape of its body 

 whilst both agree in their notably mottled appearance on both dorsal and ventral 

 surface though there is in the latter no indication of a median light line such as is 

 present in C. punctata. This varies slightly being in one of the specimens figured 

 (Fig. 5) continued to the posterior extremity whilst in the other (Fig. 6) it only 

 passes along slightly more than one-half of the length of the l)ody and there are 

 indications of another light line on the left of the median one. The margins of the 

 anterior part of the body are, in spirit specimens, curved over ventrally (Figs. 7 and 8) 

 making the dorsal, surface distinctly convex and the ventral concave. 



The two forms agree however in the presence of a ventral sucker anteriorly 

 though in C. punctata the margins of this are not so strongly marked as in 

 C. liihiteleggci. 



