94 RRSEA.RCHES IN HELMINTHOLOGY AND PARASITOLOGY. 



x\n active wriggling worm, found about some dead specimens of 

 a black Phryganca, which was infested with a fungus parasite, and 

 attached to stones at the water's edge of a small brook near Phila- 

 delphia. 



TOO. Streptostomum Agile. Pr. A. N. S., iv, 230 ; v, 285 ; Flora 

 and Fauna within Liv. An., 45. 



Aoruriis, Leidy. Pr. A. N. S., iv, 230 ; V, 284. 



loi. Strcptostomuvi Gracik, Leidy. Pr. A. N. S., iv, 100; v, 

 285 ; Flora and Fauna. 46. 



In parte Oxyuris diesingii, Hammerschmidt. Isis, 354 (1848). 



In parte Oxyuris blatkc oricntalis, Hammerschmidt. Naturw. 

 Ab. V. Haid., i, 284. 



In parte Anguillula macrura, Diesing. Syst. Helm., 11, 134. 



102. Thelastomum Attenuatum, Leidy. Pr. A. N. S., V, loi ; 

 ib., 285 ; Flora and Fauna within Liv. An., 46. 



Aonirus, Leidy. Pr. A. N. S., iv, 230; v, 284. 



103. Thelastomum Aplyendicidatum, Leidy. Pr. A. N. S., V, loi ; 

 ib. , 285 ; Flora and Fauna, 47. 



In parte Oxyuris blattce orientalis, Hammerschmidt. Naturw. 

 Ab. V, Haid., i, 284. 



In -parte Anguillula macrura, Diesing. Syst. Helm., 11, 134. 



104. Thelastom 21771 Labiatu77i, Leidy. Pr. A. N. S., v, loi ; ib., 

 285 ; Flora and Fauna, 47. 



105. Thelasto77iu777 Robiisiu//i, Leidy. Pr. A. N. S., v, loi ; ib., 

 285 ; Flora and Fauna, 48. 



Thclasto77iu77i bi-evicaudatu7n f Leidy. Pr. A. N. S. , v, 208 ; ibidem. 



106. Thelastomum Ventustimi , Leidy. Body of female fusiform, 

 straight, with the tail long, narrow, conical, straight, acute. Body 

 of male incurved, with the tail .short, depressed, ending in a re- 

 curved subulate point, and having a pair of oblong lobes or alae, 

 extending the length ventrally. Generativ^e and anal apertures 

 terminating together abruptly. Penis a curved, conical, acute 

 spiculum. Length of female to 2^ lines, breadth to one-fifth of a 

 line ; length of male to i line, breadth i-6th of a line. 



Found in great number within the large intestine of Tcstudo poly- 

 phe77ius. Obtained b)^ Mr. Joseph Jones in Georgia. It is a singular 

 fact that this species is infested with vegetable parasites, as in the 

 case of those found in myriapods and insects. 



107. Ascaris Vermicularis, Lin. 



This species is the most common of all the parasitic worms in the 

 Anglo-American . 



