MR BABINCTON'S CATALOGUE OP INSECTS. 81 



Tlic cloak of the pectenes deserves attention from the beauty and sin- 

 gularity of its structure. The free margin is clouded and mottled some- 

 thing like the shell, with brown, orange, black, and white, and two or 

 three series of short ciliated tentacula, which are not exactly marginal, 

 encircle the outer edge. Similar tentacula garnish the thickened mar- 

 gin next the adhering part of the cloak, intermixed with a few of much 

 larger size placed at distant intervals ; and in this inner series we find 

 little black bead-like bodies placed at regular intervals, glowing with 

 the lustre of some precious stones. These beads are very hard, iridescent, 

 circular, nearly sessile, and, I think, cupped in the centre ; but of their 

 function no probable conjecture has been offered. 



It will be observed from the table, that no species of Tubicolae is found 

 on our shore, species which are more peculiarly organized for burrow- 

 ing in wood, clay, and stone ; yet our limestone rocks are perforated in 

 every direction with thimble-like cavities, large enough to admit a finger. 

 These holes are the sole work of the Hiatella rugosa, which has the 

 wonderful property of excavating its cells in the rock by the excretion 

 probably of an acid or solvent, the nature of which, however, remains to 

 be discovered. 



Catalogue of Insects found at Benoick-upon- Tweed, in August 1834. 

 By CHARLES C. BABINGTON. 



Dromius lincaris. 1 Hydroporus alpinus. 6 



fasciatus. 1 sexpustulatus. 



Hclobia Gyllenhalii. 8 proximus. 



brevicollis.* ovalis. 



Amaru Iffivis. ___ jugularis. 



Bradytus apricarius. errthrocephalus. 



Calathus mollis. 5 flavipes. 



Argutor crythropus. pubcscens. 



Trcchus minutus. Colymbetes maculatus. 



Acpus fulvcsccns. 4 ___ bipustulatus. 



Peryphus agilis. Gyrinus natator. 



Bembidium paludosum.* Enicoccrus viruliieneus. 



Notiophilus striatus. tristis. 



Haliplus obliquus. Gibsoni. 



ruficollis. Elmis Volkmteri. 



Hygrotus scitulus. variabilis. 



Hydroporus depressus. lacustris. 



12-punctatus. rugosus. 



Found oo plants by the side of the river at Berwick, but not in plenty. 

 These two insects occur in great plenty under stones by the sea-shore. 

 In plenty under stones by the sea. 

 Taken in the crevices of rocks near to high.water mark, by Dr G 



Taken by Mr Ralph Johnston on the sides of the Whiteadder, at Claribad Mill. 

 6 In the Whiteadder river. 



