so rOLLINGE : MOLLUSCA OF BORNEO. 



Length (in alcohol) 24.5 millim. 



Hah. — Kuching. 



As yet I am unable to give any particulars of the internal structure 

 of this species. Externally it differs from the type of the genus, I), dilecfa, 

 Issel, in its colour, in the comparative shorter length of the dorsum posterior 

 to the visceral mass, and in the more pronounced keels on the mantle. 



I have much pleasure in associating with the name of this new species 

 that of Professor Heinrich Simroth. 



Damayantia pugosa, n.sp. 

 PI. vii, figs. 3. 4. 



Animal mauve or purplish-red in colour ; the mantle is devoid of 

 any lateral keels, but is marked by a series of small rugosities. The 

 dorsum is bluntly keeled. Rugae indefinite. Caudal mucous pore and 

 peripodial groove small. Foot-fringe deep, of a yellowish-brown colour. 

 Foot-sole same colour, divided into median am\ lateral planes. ''' 



Length (in alcohol) 10 millim. 



Hah. — Kuching. 



Wiegmannia, cii<re. 

 Wiegmannia gigas, ciifre. 



Wieqmannia gif/as, t'llge. : Trans. Roy. Soc. Edinb., 1901. vol. xl, 

 p. 300, pi. i, figs. 6-8 ; pi. ii, figs. 27, 28. 



HaJ). — Kuching. Two immature specimens. 



Collingea, Simr. 

 Colllngea eranna, n.sp. 

 Pi. vii, figs. 5, 6; Pi. viii, figs. 13, 14. 



Animal a dirty yellow, speckled with light-brown posterio-laterally ; 

 mantle same colour with darker brown markings. At each side of the 

 head is a dark bj-ownish-coloured band passing from beneath the mantle 

 to the base of the upper tentacles. Dorsum keeled. Caudal mucous pore 

 small. Rugae and peripodial groove indistinct. Foot-fringe same colour 

 as body, no lineoles. Foot-sole a dirty white, not divided into median 

 and lateral planes. 



Length (in alcohol) 23.5 millim. 



Shell thin, membranaceous, amber coloured, apex indistinct. 



Diam. max. 11, min. 6.5 millim. 



Hab. — Kuching. 



The Generative Organs (PI. viii, figs. 13, 14). — These differ from 

 those of the four known species, in the elongated vagina and penis and 



1. In my former paper, in the diagnosis of the genus, it was stated, in error, tliat the fnotsole 

 wiis not divided into median and lateral planes. 



