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



On the small branches of Fuci to which it was attached, there was 

 not room for more ; nor was there indeed on the broadest portion 

 of the main stem, whence the leading branches of the plant issued : 

 — the latter is its favourite position. The specimens agreed in all 

 respects with the description and figures in Edwards's work. 



Botrylloides rotifera, Edw. Asc. Comp. p. 85. pi. 6. fig. 1 ? 

 was attached to the under side of the same stone with the last, and 

 covered several square inches of its surface. I mark it with doubt 

 on account merely of some little difference in colour. The " con- 

 sistance gelatineuse" was rather hyaline than "jaunatre ;" the in- 

 dividual forms were more of a uniform red than in Edwards's figure, 

 and were each as brightly coloured as in B. rubrum, Edw., and of 

 the hue that it is represented to be. The individuals being arranged 

 in a scattered manner, and not thrown into masses as in B. ruhrum, 

 was a striking character. 



There is no record of these two species of Botrylloides having been 

 procured on any other part of the coast of the British Islands. 



ClRRHIPEDA. 



Adna anglica, Leach. 

 Three dead specimens were obtained on fragments of Caryophyllia 

 from rocky ground east of Cape Clear — forty to fifty fathoms, by 

 Mr. MacAndrew. 



Note. 

 Balanus punctatus, Mont., 

 to the exclusion of every other species or form, profusely covers 

 over the stones and rocks between and above tide-marks, on various 

 parts of the coast of Down, as I have also observed it to do on the 

 Dublin coast. 



* Crustacea. 



Lynceus lamellatus, Mull. Eurycercus lamellatus, Baird. 

 Taken in Lough Neagh at the beginning of August by Mr. A. H. 

 Haliday andW. T. 



Cypris reptans, Baird ? 



Taken with last ; together with a species of Daphnia, believed by 

 Dr. Baird to be undescribed : the Lynceus and Cypris were named 

 by this gentleman ; the specimen of the latter being in a bad state 

 was marked with a note of doubt. 



* Scorpionidea. 



Obisium maritimum, Leach, Zool. Misc. vol. iii. p. 52. 

 A very few individuals were taken in fissures of marine rocks at Bangor, 

 (Downshire,) in July 1840, by Mr. Hyndman and myself; one specimen was 

 obtained by us under a stone between tide-marks at Gull Island, Strangford 

 Lough, in June 1846. I compared the Irish specimens with Leach's in the 

 British Museum. The west of England is the only habitat assigned to the 

 species in the ' Zoological Miscellany.' 



