410 CRUSTACEA. 



and July. M. Edwards indicates this species merely as found in the gills 

 of a salmon. C. vesjm was noticed this year for the first time as found on 

 the English coast. See British Museum Crust., p. 118. 



C. curtus, Kroyer. 

 On Raid maculuta taken in Belfast Bay, April, 1839, W. T. 



C. rapax, Edw. 



C. stun'onis, Kroyer, 



I obtained on Triijla hirundo and T. jnni brought to Belfast market in 

 November, 1839. 



C. Nordmanni, Edw. 



I took several specimens of this fine Calic/us alive on a sun-fish (Or- 

 thncjoriscus mola) captured on the coast of Antrim in September, 1848. 

 They were all adherent externally to the skin of the fish on different 

 parts of the body. When living they were marbled over with greyish 

 lilac of dark and light shades. This species was erroneously included in 

 a paper published in the 20th vol. of the Annals, p. 248. The name C. 

 3IiUleri being substituted there for C. N^ordmanni will make all correct. 

 Two others noticed in the same page require the folloM'ing correction, 

 according to Dr. Baird, who then kindly assisted in determining them, 

 but has since given the subject a more rigid examination. 



C. pectoralis, Kroyer. 



M. Edwards notices this as found on turbot, plaice, and other flat-fishes 

 (vol. iii. p. 454). I have procured it on Platessa Jlesus, P. limanda, Solea 

 vulgaris, Scomber sconibrus, Zeus faher, and Conger vulgaris, brought to 

 Belfast market in March, 1837 : they adhered to all the exposed parts of 

 the body of the various fishes, and not to the gills, &c. 



Genus Trebius. 

 T. caudatus, Kroyer. 



This truly generic form was obtained by Kroyer on a Squalus galeus 

 taken in the Kattegat. My specimens — both male and female — were 

 found adhering externally over both sides of the body of a Raia batis 

 captured in Belfast Bay in September, 1838. 



Genus Cecrops. 



C. Latreilleii, Leach. 



South of Ireland, J. V. Thompson. 



On Orthcif/oriscus 3IoIa, taken at Dublin, Dr. Ball. Cork, Prof. Allman. 



On the same from Antrim coast.* 



Genus DiCHELESTION. 



D. sturionis, Edw. 



South of Ireland, J. V. Thompson. 



* On Orthagoriscus Mola, Belfast Bay, 1852. — Ed. 



