1895.] NEW ilOLLTJSCS FEOil BORNEO. 245 



and the extremity of the foot and the hollow in which the body 

 rests are quite different. 



Animal (figs. 14-16), in alcohol, of a bluish^-grey colour, 

 dorsum dark blue. The foot-sole is divided into a median and 

 two lateral planes, the former being yellow ; the lateral planes 

 were probably much darker — a dark blue or sepia — when received 

 they had a dark green appearance, which has gradually faded as 

 fresh alcohol has been added. Foot-fringe deep and well marked, 

 liueoles chocolate-brown. The extremity of the foot is truncate. 

 Mucous pore a narrow vertical slit (fig. 15) not extending to 

 the sole of the foot. The mantle-lobes are yellowish brown in 

 colour and smaller than in Daniayantia smiihi, extending around 

 and over the margin of the shell, but leaving a large portion 

 visible. It is almost impossible to remove the shell without 

 tearing away the flat and more solid upper surface of the last 

 whorl, which really forms the first whorl, from the apex and the 

 thin membranaceous covering at the back, because the apical 

 portion, as will be seen from the figures (figs. 16 & 17), holds the 

 posterior end of the visceral sac, which forms a large and distinct 

 closely wound spiral. 



Habitat. Paka Paka, Kiua Balu (10,000 ft.), on leaves (A. H. 

 Everett). 



We have named this species after Signor Carlo PoUonera, the 

 distinguished Italian malacologist of Turin. 



Microparmarion pollonerai at first sight may appear to be not 

 unlike Damayantia smithi, but the shell is far better developed, 

 with a corresponding reduction of the shell-lobes, and the colour of 

 the posterior portion and foot-sole differs also. 



1. Anatomy. 



Visceral Mass, ^c. — The salivary glands (fig. 21) lie one on 

 either side of the oesophagus. The jaw (fig. 18) is strong and 

 solid, well arched above, with a large central projection on the 

 cutting-edge, which is very slightly concave. The lingual ribbon 

 (figs. 19 & 20) has the formula 



60—25—1—25—60 

 85—1—85. 



The centre tooth has two cusps at the base of the centre point ; 

 the median teeth are large and broad, with an outer basal cusp, 

 the succeeding laterals being much curved and more equally 

 bicuspid. 



Generative Organs (figs. 22, 23, 24, 25). — There is a wide sac- 

 like vagina from which arises the receptaculum seminis, a somewhat 

 irregular-shaped sac. As in Damayantia smithi, there is no duct. 

 The penis is a thick elongated muscular sheath ; the vas deferens 

 passes off as a narrow tube from the posterior end, in life it lies 



1 Wherever a green colour was present in the alcoholic specimen, it is here 

 spoken of as blue, 



