MOLLUSC A. 91 



the latter name should be retained, having a few months' priority of 

 publication. 



The single specimen from Torres Straits agrees with the excellent 

 description given by Mr. Abraham except in respect of the greater 

 proportional length of the caudal portion of the hody, which equals 

 half the entire length of the animal, and the greater breadth of the 

 foot, two differences probably due to the various degrees of con- 

 traction at death. 



134. Doris (Platydoris ) infrapicta. 



Body flattened, elongate oval. Mantle softish, fleshy, finely 

 granular above, smooth beneath the widely expanded border. Foot 

 broad, rounded at both ends, widely spreading all round except 

 beneath the mouth, where it is more narrowly expanded, and has a 

 narrow lamina above, which is notched in the middle and is pro- 

 duced a little in advance of the edge of the foot itself. Oral ten- 

 tacles compressed, curving forward. Bhinophores short, with com- 

 paratively few lamime, pointed at the apex. Branchial plume six- 

 lobed, each lobe trifurcate above, surrounding the small central 

 yellow six (?)-lobed anus. 



Colour pale buff, variegated with a dirty brownish tint above. 

 Beneath, the mantle-expansion is copiously stained and blotched with 

 dark chocolate-brown, except near the border, which is pale and 

 unspotted. Foot spotted with the same colour, especially towards 

 the centre, the margin being pale and destitute of markings. 

 Length 50 millim., width 32 ; foot 43 long, 18 broad. 



Bab. Queensland, 4 fms. 



This species appears to be closely related to D. inframaculata, 

 Abraham, from Amboina. It differs in coloration somewhat, the 

 greater width of the foot, which is not " truncate in front," the 

 softer character of the mantle, and the coarser granulation of its 

 dorsal surface. 



135. Plocarnophorus insignis. (Plate VI. figs. L, L 1.) 



Body elongate, ending posteriorly in a laterally compressed and 

 obliquely truncate termination ; (in spirit) of a pale colour, dotted 

 with black along the sides close to the foot, on the oblique carinate 

 margin of the posterior end, and on the sides of this caudal extremity, 

 which also exhibits a few small rounded tubercles. Branchial 

 plume a little posterior to the middle of the back, trilobed, one lobe 

 central, anterior, the other two lateral, one on each side, bifurcate, 

 all branching above. Anus stellate, situated between the lateral 

 lobes. On the back, a little behind the branchiae, is situated a single 

 black-spotted elongate papilla on each side. Foot elongate, with a 

 double margin in front, finely tuberculated in the groove between 

 the two edges, much attenuating posteriorly. Head with the 

 frontal margin black- dotted, bearing a fringe of about eight slender 

 prolongations ; beneath this and between it and the mouth is a 



