CRUSTACEA. 



113 



Chelura terebrans. — Philippi, vol. v, p. 120, pi. iii,fig. 5. — Bate 

 and Westwood, p. 503. 

 This is one of our most destructive wood-eating Crustacea. It 

 is commonly associated with. Limnoria legurium, but fortunately 

 for our piles and pier woodwork, it is not prolific as the smaller 

 Limnoria. It has been found to destroy a piece of sound timber 

 thirteen inches square in less than ten years. It eats into the 

 timber in a level with the mud to the usual height of neap tides, 

 avoiding, however, the knots in the wood. In this manner the 

 wood is riddled in every direction, and is then easily destroyed 

 by the force of the waves. 



HYPEEINA. 

 EYPERIDJE. 

 Genus, Lestrigonus. — Milne Edwards. 



Mist, des Crust., t. Hi, p. 81. — Bate and Westwood'' s Brit. Sessile- 

 JEyed Crustacea, vol. i, p. 3. 



Head orbicular, deeper than broad, Anterior division of the 

 body (pereion) broader than the posterior (pleon). Eyes large. 

 Telson single, triangular. 



These are supposed to be the males of the following 



Genus, Hyperia. — Latrielle. 



Bate and West-wood, vol. 2, p. 11. 

 Hyperia galba. — Montagu, Lin. Trans., xi, p. 4, pi. 2, jig. 2. 

 Taken in the sea floating in medusce, off the coast. 



CAPELLIBJE. 



Genus, Proto. — Leach. 



Lin. Trans., xi, p. 362. — Bate and Westwood, p. 36. 



Head and first somite of the body united. Posterior portion of 

 the body rudimentary. 



Proto pedata. — Abildgaard, in Midler, Zool. Ban., pi. Hi, p. 33 

 pi. cl, fig. 1, 2. — Bafc and Westwood, p. 38. 



Occasionally found in dredging all round the coast. The late 

 Mr. K. Q,. Couch took it at Mousehole, Cornwall. 



