Dr. O'Bryen Bellinghaiu on Irish Entozoa. 



173 



29, Ascaris clavata * 



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30. 



31. 

 32. 

 33. 



Capite alato. 



Tntestine and peritonseum of salmon {Salmo 



Salar) . 

 Intestine of salmon-trout {Salmo Trutta). 

 Stomach and peritonaeum of cod (^Gadus 



Morrhua). 

 Stomach and intestine of haddock (Gadus 



JEgleJinus^ . 

 Intestines of whiting (Merlangiis vulgaris). 

 Stomach and intestine of hake (^Merluccius 



vulgaris). 

 Stomach and intestine of whiting-poUach 



(^Merlangus Pollachius). 

 Intestines of coal-fish {Merlangus Carbona- 



rius). 

 Stomach and intestine of conger-eel (An- 



guilla Conger). 

 Peritonaeum of mackerel {Scomber Scomber). 

 Intestine of turbot {Pletironectes maxiinus). 

 Intestines and pyloric appendages of holibut 



{Hijypoglossus vulgaris), 

 tenuissima. Intestine of whiting (Merlatigus vulgaris), 

 succisa . . Intestine of lump-fish {Cyclopterus Lumpus). 

 alata, mihi f. Intestines of man {Homo). 



collaris . 



V 



* The Ascaris clavata is mentioned by Rudolphi as occurring in 

 only three species of fish ; I have found it in ten different species ; it 

 is extremely common in the cod, and sometimes grows to a large 

 size. This species lived in a vessel of fresh water for four days after 

 being removed from its natural habitat. 



t The species of Ascaris to which I have ventured to give the 

 name Asc. alata, from the distinctness of the lateral membranes of the 

 head, is very rare ; I only met with it once, and then obtained only 

 two specimens. These are both females ; they measure 3^ inches in 

 length, and are half a line in width anteriorly, and three-fourths of a 

 line posteriorly ; the anterior extremity is inflexed, the posterior 

 straight. The anterior extremity is provided upon each side with a 

 very distinct semitransparent membrane a line and a half in length. 

 In general appearance the Ascaris alata resembles the Asc. mystax, 

 which is common in the domestic cat ; it differs however in being of 

 a greater diameter posteriorly than anteriorly. 



Although this species has not been previously described, it would 

 appear that one closely resembling it had been already observed in 

 this country. In the fourth and fifth vols, of the ' Transactions of the 

 Association of the King and Queen's College of Physicians ' is con- 

 tained a very interesting case, in which great numbers of insects and 

 their larvae were voided by a female residing in the county Cork ; 

 upon several occasions the Ascaris lumbricoides, and a species re- 

 sembling this, were voided also by the same female. Dr. J. V. Thorn- 



