BTJLLJEA. 291 



I published in the 3rd vol. of the ( Zool. Journal/ I believe, 

 twenty years ago, and have not seen either it or the animals 

 since; I am therefore in some measure on new ground, and 

 this oblivion is a guarantee that I am not influenced by former 

 impressions. 



B. PUNCTATA, Clark. 



B. punctata, Zool. Journ. iii. p. 339. 



Philine punctata, Brit. Moll. iii. p. 547, pi. 114. E. f. 8, 9j (animal) 

 pi. U.U. f. 5. 



Animal oblong oval, having the anterior lobe of the upper 

 disk rounded in front, contracted behind, and in consequence 

 showing its decided separation as to the groove from the pos- 

 terior one, which is smaller and more subrotund, and contains, 

 as in its congener, B. catena, the same shaped white vitreous 

 shield, elegantly striated with oblique lines composed of di- 

 stinct dots ; the posterior lobe bends to meet the pedal one 

 beneath, and is slightly digitated, the left fillet being the 

 largest, from whence the extremity gently obliques in an 

 anterior direction to the right side. The pedal disk is con- 

 tinuous, and meets the bent portion of the upper posterior 

 lobe; it is also exceedingly well reflexed laterally, giving 

 the characteristic four-lobed aspect of the tribe; the canal 

 dividing the disks on the left side, is white and smooth ; while 

 on the right, the anus, which is most posterior, then the points 

 of the branchiae, and lastly, the common receptacle of genera- 

 tion, may be seen, with the spermatic open groove connecting 

 the last organ with the organe generateur ; but I need not 

 say more, as all these parts are identical with those of B. ca- 

 tena, and are fully described in the references under that 

 head. 



The pedal disk is pale yellow, suffused with a faint blush of 

 cloud colour ; the upper disk is of a dirty- white ground, but 

 well marked with the finest longitudinal dark close lines, 

 mixed with minute streaks and points, giving the whole area 

 a dark cloud- coloured sombre aspect, instead of the pale red 

 one of B. catena. I have a confused recollection that in my 

 former account of this species I stated that I could not find a 



u2 



