Land, Fresh- Water, and Marine Crustacea. 377 



7. Balanus Hameri (Ascanius). 



17d7. Lepas Hameri, Ascan., Icones rerum Naturalium, Tab. 10. 

 1854. BalaniiH Hameri, Darwin, /. c. , p. 277, pi. vii. figs. 5a-5c. 



Hob, — Largo Bay, and off' the west side of Inchkeith, 

 single specimens, and occasionally a cluster attached to 

 pieces of wood.^ 



Genus (4) Verruca, Schumacher, 1817. 

 8. Verruca Stromia (O. F. Mtiller). 



1776. Lepas Stromia, Miill., Zool. Dan. Prodr., No. 3025. 



1854. Verruca Stromia, Darwin, I. c, p. 518, pi. xxi. figs. la-1/. 



Hah. — Frequent on stones, dead shells, etc., brought up 

 in ihe dredge. 



Rhizocephala. 



Family Sacculin^. 



Genus (5) Sacculina, Thompson. 



9. Sacculina carcini, Thompson. 



Rah. — Attached to the abdomen of Shore Crabs, Carcinus 

 mcenas, at Joppa (J. Anderson ^); not very rare. 



10. Sacculina triangularis, J. Anderson. ^ 



Jlah. — Firth of Forth (J. Anderson). Dunbar, attached 

 to the abdomen of Cancer 2^agur us; rare (H. C. Williamson). 



ir. Sacculina sp. 



Rab. — Attached to the abdomen of Portunus holsatus; this 

 Sacculine has been observed very sparingly in different parts 

 of the estuary. 



^ Balanus tintinnahulum (Linn.), from Leith Dock, in Leslie and Herd- 

 man's Tftvertebrate Fauna, is, as stated by these authors, "a foreign importa- 

 tion," and is not included with the others here. 



^ Cf. Proc. May. Phys. Sac, vol. ii. 



