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 of 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 j B, sternum ; c, first joints of coxre ; s, first joint of labial palpi ; £, labial 

 palpi; &, mentum; y, maxilla; \ maxillary palpus; *, base of antenna; 

 a, abdomen ; a, fusi. 



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, Jenyns, Mackerel Midge. — Two mi- 

 nute specimens — the larger lj 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 Ciliat a glauca of Couch, 

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

 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 55 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 wish, however, that in his excellent volume on Apterous insects in the 

 1 Suites de Buffon ' he had not been so fon<J of changing names. Surely 

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

 name. 



