102 



chelate ; next three pairs simple. The propodite of the third 

 pair is expanded into a broad quadrilateral plate. 



The abdomen is slightly narrower before and behind than in 

 the middle ; the second segment is the largest. The telson is 

 distinctly shorter than the endopodite of the uropods ; it is not 

 quite quadrate, its angles being rounded. Pleopods of first 

 and second segments slender ; those of third, fourth, and fifth 

 segments much more robust, and expanded into wide plates 

 fringed with setae. 



Size.— The largest specimen taken by the Helga measures 

 only 33 mm. Adults are often about 50 or 60 mm. long. 



General Distribution. — The species has been found in the 

 Black Sea (CzerniaVsky), in the Mediterranean (Heller, Carus, 

 Adensamer, etc.), the Adriatic (Heller), the Bay of Biscay 

 (Fischer), at Cape Gris Nez and Boulogne (Giard), en the coasts 

 of Holland (Tesch, Metzger), in the Channel Islands (Sinel), 

 coasts of England and Scotland (Bell, Scott, Sim). It does not 

 extend as far north as the Danish and Norwegian coasts. 



Irish Distribution. — Few specimens have actually been re- 

 corded but this is due to the burrowing habits of the species, 

 and there is little doubt that it occurs all round the coasts, with 

 the exception perhaps of the north. It is more frequently 

 found in the stomach of bottom -living fishes such as Raia 

 clavata than in the trawl or dredge. 



Helga. — 



L. 298 — 3 III '04. Ballynakill Harbour, Co. Galway. Shore 



collecting. — One. 

 L. 299 — 3 III '04. Ballynakill Harbour, Co. Galway. Shore 



collecting. — One, 33 mm. 

 S. 561—24 X '07. 12 mis., W. by S. of Chicken Rock, Isle 



of Man, 34J-38J fms., mud. Trawl. Temperature 



at 30 fms., 12-75° C, salinity 34-04 %^.— One large 



cheliped. 



It has been found frequently in specimens of Raia clavata 

 taken in Galway Bay and the surrounding areas. 



Vertical Distribution. — It occurs from between tide marks down 

 to considerable depths as is shown by the record from S. 561 

 above. It is common in depths of about 10 or 12 fms. 



Genus Upogebia, Leach. 



Upogebia, Leach, Edin. Encyclop., art. Crustaceology, 1814. 

 Gebia, Leach, Trans. Linn. Soc, Vol. 5, 1815. Thallassina, 

 Risso, 1816. Gebios, Risso, 1826. Gebia, H. Milne-Edwards, 

 1837. Gebia, Bell, 1853. Upogebia, Stebbing, 1893. Upogebia, 

 Stebbing, 1900 (b). Upogebia, Borradaiie, 1903. 



