Crustacea of St. Andrews. 345 



Tribe Bsachyuha. 



Fam. Leucosiadse. 



Genus E bali a, Leach. 



Ebalia tuberosa, Perm. ; Bell, op. cit. p. 141. 



Not uncommon in the stomachs of cod, and occasionally 

 from deep water. 



Ebalia Cranchii, Leach ; Bell, op. cit. p. 148. 

 Occasionally in the stomach of the haddock. 



Fam. Maiidae. 

 Genus Inachus, Fab. 

 Inachus dorsettensis, Penn. ; Bell, op. cit. p. 13. 

 Not uncommon in the stomach of the cod. 



Inachus dorhynclius, Leach ; Bell, op. cit. p. 16. 

 Occasionally under stones near low-water mark. In the 

 stomach of one were fragments of Ulva, and in another the 

 debris of a large sessile-eyed crustacean. The hairs on this 

 species are shaped like the horn of the chamois ; and some 

 have a slight enlargement at the base. 



Genus Hyas, Leach. 

 Ilyas araneus, L. ; Bell, op. cit. p. 31. 

 Abundant under ledges in rock-pools, cast ashore on the 

 West Sands after storms, in the crab-pots, and in the stomach 

 of the cod. 



This species has eight branchial processes on each side — 

 four lateral, two anterior, and one to each of the first two pairs 

 of foot-jaws. Their structure resembles that described in Car- 

 cinus mccnas. The ova apparently of a small leech [Ponto- 

 bdella) are often found attached to the walls of the branchial 

 chamber. 



The number and variety of parasitic growths, both vegetable 

 and animal, on the carapace of this form are remarkable. 

 Balani of two species cover the back almost with a continuous 

 rugose pile, adhering to the limbs, the abdomen, the foot-jaws, 

 or each other. Coils of Serpulce and hard sandy tubes of 

 Sabellaria interlace with these and fill up the depressions, and 

 with the former occur on the tip of the abdomen as well as on 



