45 8 Proceedings of the Royal Irish Academy. 



"Family TEGASTEDAE, 



Tarategastes sphericus Clans). — Inishlyre Eoads, 2-4 this., February, 1910, 

 common. Blacksod Bay. 1—2 this., September, 1911, several 



*Tegastes nanus G. 0. Sars. — Blacksod Bay. i fms., September, 1910, one. 



Family POECELLEDIEDAE. 



Porcellidium flmbriatum Glaus. — Clifden Bay B. & B. . Westport Bay 

 (B. ic R., sub P. viride). Balrynakill Harbour, frequent. Blacksod 

 Bay, between tide-marks, few. 

 P. tenuicauda Claus. — CUfden Bay (B. & R,). 

 *P. lecanoides Claus. — Blacksod Bay, between tide-marks, March, 1911, 

 two specimens. The colour of this species is remarkable, the centre 

 of the cephalon and of the abdominal segments being dark crimson, 

 and the thoracic segments and margins of the body colourless, though 

 rather opaque. 



Family EDYEDAE. 



Aspidiseus littoralis G. 0. Sars. — Clifden Bay B. <£ R. sub A. fasciatus). 

 Ballynakill Harbour, 1910, frequent. 

 *A. fasciatus Norman. — Blacksod Bay, between tide-marks, 1911, two 

 ;• -::i-v:.-. 

 Psamathe longieauda Philippi. — Clifden Bay (B. i: R. sub Scutellidium 

 tkisboides). Ballynakill Harbour, 3-4 fms., December, 1901, two. 

 Blacksod Bay. between tide-marks, September, 1911, one. 

 Idyaea furcata (Baird ; . — Blacksod Bay, between tide-marks, 1911. 



common. 

 *I. angusta G. O. Sars. — Blacksod Bay, 1-3 fms., September, 1909, three, 



2 fms., September, 1911, one. 

 *L tenera G. 0. Sars. — Clew Bay, 18 fms., Aug. 1910, one; 5-6 fms. 



August, 1911, three. 

 *I. longicornis i Scott). — Off Clare Island, 56 fms., August, 1911. two. 



Family THALESTEILAZ. 



Thalestris longimana Claus, — Common at Ballynakill both in dredged 

 material and in tow-nettings taken at night, as are many other 

 species of the Thalestridae. Occasionally taken in the open sea. 

 Frequent in Blacksod Bay. 



Parathalestris Clausi (Xorman). — Clifden and Westport Bays (B. & R.). 

 Ballynakill, 1901-2, common. Clew Bay, 5-7 fms., May, 1899, August, 

 1911, common. 



