14 Mr. Thompson on Fishes new to Ireland. 



six true feet, being unguiculated. Here, however, as in Cher- 

 sis, the labial palpi have no ungues at their extremity. More- 

 over, these labial palpi have only six joints ; differing from 

 those of spiders in general, which have seven. 



I have named the species after my old and very distin- 

 guished friend Baron Walckenaer, to whom we owe so much 

 of our knowledge oi Arachnida'^. Otiothops Walckenaeri is 

 found under stones in the woods of Cuba. My sketch is from 

 the life. 



Plate II. Fig. 5. Otiothops Walckenaeri, magnified. /3, disposition of 

 eyes ; B, sternum ; c, first joints of coxte ; s, first joint of labial'palpi ; ^, labial 

 palpi; 6, mentum ; y, maxilla; S, maxillary palpus; «, base of antenna; 

 a, abdomen ; u, fiisi. 



II. — On Fishes new to Ireland. By William Thompson, 



Esq., Vice-President of the Natural History Society of 



Belfast. 



[Continued from Vol. I. p. 359,] 



MoTELLA GLAUCA, Jcuyns, Mackerel Midge. — Two mi- 

 nute specimens — the larger If inch long — of Motella that I 

 have closely examined, and which were obtained at the South 

 islands of Arran (off county Clare), by R. Ball, Esq., in June 

 1835, agree in every respect with the Ciliata glauca of Couch, 

 described in the Magazine of Natural History, vol. v. p. 16 j 

 at the same time I cannot perceive any specific difference be- 

 tween them and M. Mustela. 



Phycis furcatus, Flem., Common Fork-beard. — To 

 Cortland G. M. Skinner, Esq., of Glynn Park, Carrickfergus, 

 I am indebted for a remarkably fine specimen of this fish, 

 which was kindly secured for me on its being stated by the 

 fishermen who captured it to be a species quite unknown to 

 them. It was taken on February 24, 1836 (a calm day), with 

 a gaff or hook, as it " lay floundering" on the surface of the 

 water ; was very violent when brought on board, and before 

 dying had struggled so hard as to divest itself of nearly all 

 its scales. 



* I wisb, however, that in his excellent volume on Apterous insects in the 

 ' Suites de BufFon ' he had not been so fond of changing names. Surely 

 Walckenaer can afford to despise the petty credit of assigning a generic 

 name. 



