86, COLLECTIONS PBOM MELANESIA. 



C. larvoeformis (Blainvilie), in Burrow's ' Elements of Concho- 

 logy ' (1815), p. 191, pi. 28. figs. 2, 3, 4, is not this species as 

 supposed by Eeeve, but is beyond question the same as C. fasdatus 

 of Quoy,= C. eruciformis, Sowerby (Genera Eec. & Foss. Shells, 

 fig. 5),= C. Iceuis, Lamarck, 1819 (Anim. sans Vert. vol. vi. p. 317). 

 The crude figure of O. larvceformis in Blainville's ' Malacologie ' 

 (1827.), pi. 87. fig. 6, is probably also merely a young specimen of 

 the same species, judging from the sculpture and form of the 

 detached valves. In the drawing of them in situ, on the back of the 

 animal, the anterior ones are rather narrow. The valves figured 

 by Burrow are still preserved in the British Museum ; but I cannot 

 find the dried animals or that in spirit which he mentions. 



Blainville's figure represents the mantle as clothed with compara- 

 tively longish spines, and the giUs extend nearly halfway up the side 

 of the foot. In C bwrrowi, on the contrary, the gills are very short, 

 do not occupy a third of the length, and are only 22 in number. 



C. oculatus of Quoy and Gaimard I believe to be a young state 

 of their G. fasdatus. In the British Museum there are some small 

 specimens of this species which answer very closely to the descrip- 

 tion ; they have the two dark bands meeting over the back, the 

 posterior valves narrow and separated, and the three anterior ones 

 pale greenish and surrounded by a border of short black spines 

 with a pale zone outside it. The other spines on the mantle in the 

 smallest specimen are a trifle longer than usual and very closely 

 packed. The gills are said to number twenty on each side in 

 G. oculatus, being three less than in G. fa^sciatus, a discrepancy 

 accounted for by age ; for in adult specimens of C. striatus I find a 

 few more than in the young. 



120. Tornatella, solidula. 



Linn. ; Reeve, Conch. Icon. figs. 3 a, b. 

 Var.=T. coccinata, JReeve, I. c. figs. 1 a-c. 



Hah. Friday Island, Torres Straits, on the beach; also Port 

 Jackson. 



This species has a wide geographical range, having been recorded 

 from many localities in the Indian and Pacific oceans. The so- 

 called species T. affinis, A. Adams, should, I think, be regarded 

 as a small form of T. solidula. 



121. Cylichna arachis. 



Bulla arachis, Quoy Sf Gaimard, Voy. Astrolabe, Zool. vol. ii. p. 361, 

 pi. 26. figs. 28-30 ; A. Adams, thes. Conch, vol. ii. p. 590, nl. 125. 

 fig. 134. 



Hah. Port Jackson {Coppinger and An0as) ; Port King George 

 (Q. Sf Q.) ; Tasmania, Stewart Island, New Zealand {Brit. Mus.). 



122. Atys naucum. 

 lAnn. ; Reeve, Conch. Icon. figs. 1-1 c. 



Hah. Friday Island, Torres Straits (Coppinger) ; also recorded 



