238 Annulose and Rayed Animals 



to the above synonymes. The form of the scales, and the 

 appearance and number of the spines, scarcely agree with 

 the descriptions or figures I have seen; it seems, however, 

 referable to this species, rather than to any other of those 

 described by Lamarck. (T. MSS.) [In VIII. 595, 596., 

 are a description and figure of O. granulata Flem.~] 



Encrinciida. 

 E'ncrinus Guettard (Vsls Lin.) aster Lin. Fragments of this 

 are common enough at Glenarm, 



"Echi?wlda Lat. 



-Echinus Lin. esculentus Lin. Not uncommon on many 

 parts of the coast. — E. miliar is Leske. Great numbers of 

 this species are often thrown upon the shores of Belfast 

 Lough by easterly storms. — E. lithophagus Leach. Plen- 

 tiful in Bantry Bay, where it forms hollows in the rocks, in 

 which it rests: see Tilloch's Mag., 39. 100. — Echinocya- 

 mus Les/ce (Fibularia Lam.) ovulum Lam. Found on all 

 our sandy shores after storms. — Spatangus Les/ce, Lam. 

 cordatus Penn., pusillus Leske, arenarius Lam. Found 

 on our sandy shores thrown up after storms. — £.purpureus 

 Mull., lacunosus Penn. Three specimens were dredged 

 up in Dublin Bay. — S. purp. var. Resembling in every re- 

 spect of size and surface the preceding, except in its having 

 5, not 4, ambulacres. 



SANS PIEDS. 



Thalassema Cuv. Neptunz Gaertner. Found among marine 

 plants, rolling about and extending itself. 



ENTOZCTA Bud. INTESTINAUX Cuv. 

 Nematoidea Rud. 

 Trichocephalus Rud. i/ominis Gm., dispar Rud. Not at all 

 uncommon in the caeca of men ; but its diminutive size has 

 caused it to be overlooked. — Oxyurus Rud. curvula Rud. 

 Inhabits the intestines of the horse. One specimen was dis- 

 charged from a grey mare 

 five years old. The belly of 

 the worm was blackish, the 

 tail transparent. — O. Gadi. 

 (Jig. 31. a, natural size; b, 

 magnified.) Of a transparent 

 white. Intestinal canal con- 

 voluted, opaque, white. Body 

 cylindric, contracting in the 

 latter third of its length, so as to become very slender. The 



