Mr. W. Thompson's Additions to the Fauna of Ireland. 249 



on which species from Belfast bay I likewise obtained my specimen 

 in December 1839 : — it was adherent to the cavity posterior to the 

 vent of the fish. 



Order Pycnogonida. 



45. Nymphon femoratunij Leach, Zool. Misc. vol. i. p. 45. tab. 19. 



f.2. 



Dredged from eight to ten fathoms at Donaghadee in May 1843 

 by Dr. J. L. Drummond. 



Leach only is quoted by M. Edwards, vol. iii. p. 534, for this spe- 

 cies, who notes it however as inhabiting " La Manche." 



46. Phoxichilidium globosum, Goodsir, Edin. New Phil. Journ. 



vol. xxxii. p. 136. pi. 3. f. 1, January 1842, 

 I obtained among zoophytes thrown ashore at Portmarnock, on the 

 Dublin coast, in Aug. 1840. This species was only known to its 

 describer as taken in Orkney by Mr. Edw. Forbes and Mr. John 

 Goodsir. 



The following brief summary of the Crustacea contained in the 

 preceding list may be desirable. 



There are introduced for the first time to the fauna of the British 

 seas, the generic forms of Opis,Anonyx*, and allied genus, Lestrigonus, 

 JEgina ?, Tanais, Trebius, Lernceopoda ; and the specific forms of 

 Eurynome scutellata, Cirolana hirtipes, Caligus minutus, C. curtus, 

 C. diaphanus, C. pectoralis, C. Nordmanni and C. sturionis. A number 

 of undetermined species, and some of them certainly non-descript, 

 are still in my possession. 



Of generic forms added to the Irish fauna (but all included in the 

 British) there are Amphithoe, Cerapus, Themisto (Macromysis), Cyn- 

 thia, Jaira, Eurydice, Cymodocea, Munna, Cetochilus, Canthocarpus and 

 Phoxichilidium. 



The mere species added to the Irish fauna possess various interest, 

 as indicated in noticing them respectively. My specimens of several 

 forms were the first obtained, having been procured some years 

 before those from which the original descriptions were drawn up 

 by M. Kroyer and Mr. H. Goodsir. 



Some of the species here brought forward have hitherto been no- 

 ticed only as found in the Mediterranean f, others in the seas of 

 Denmark, and several as met with only at a single locality on the 

 English or Scottish coast ; all information of this kind possesses much 

 interest as exhibiting insofar the geographical range of the species. 



Without the kind aid of Mr. Adam White and Dr. Baird of the 

 British Museum, who assisted me in the determination of the species 

 from comparison with those contained in the national collection and 

 otherwise, I should not have ventured to publish this communication. 



* See ante. 



f One (Cirolana hirtipes) as from the Cape of Good Hope! but further 

 information is desiderated respecting it. 



Ann. $ Mag. N. Hist. Vol. xx. 18 



