376 Proceedings of the Royal Physical Society. 



Genus (2) Conchoderma, Olt'ers, 1814. 



2. Conchoderma aurita (Linne). 



1767. Lepas aurita, Linn., Systema Naturae, ed. xii., vol. i. part ii. 



p. 1110. 

 1851. Conchoderma aurita, Darwin, I. c, p. 41, pi. iii. fig. 4. 



Hah. — Attached to floating timber (Edin. Mus., Leslie and 

 Herd man). 



3. Conchoderma virgata (Spengler). 



1790. Lepas virgata, Spengler, Skrift. Naturh. Selbsk., vol. i., pi. vi. 



fig. 9. 

 1851. Conchoderma virgata, Darwin, I. c, p. 146, pi. iii. fig. 2; 



pi. ix. fig. 4. 



Sab. — Attached to floating timber (Edin. Mus., Leslie and 

 Herdman). 



Family Balanida 

 Genus (3) Balanus, Da Costa, 1778. 



4. Balanus porcatus, Da Costa. 



1778. Balanus porcatus, Da Costa, Hist. Nat. Test. Brit., p. 249. 

 1854. ,, ,, Darwin, Monograph: Balanidse, p. 256, 



pi. vi. figs. 4a- ie. 



Hab. — Not uncommon attached to stones, etc. (Leslie and 

 Herdman). 



5. Balanus crenatus, Bruguiere. 



1789. Balanus crenatus, Bruguiere, Encycl. Method, (des vers). 

 1854. ,, ., Darwin, I. c, p. 261, pi. vi. figs. Qa-6g. 



Hob. — Shore at Portobello (Leslie and Herdman). East 

 side of Inchkeith. 



6. Balanus balanoides (Linne). 



1767. Lepas balanoides, Linn., Systema Naturae, vol. i. part ii. 



p. 1108. 

 1854. Balanus balanoides, Darwin, I. c, p. 267, pi. vii. figs. 2a- 2d. 



Hob. — Common on rocks and stones between tide-marks, 

 and also in deep water. 



