48 [Fkbruary. 



11. ECHINORHYNCHUS OVATUS Lcidj. 



Pr. A. N. S., T, 9*7, (1850.) 



Echi/norhifnchiis campanulalus Diesing, Syst. Helm, ii, 21, (1851.) 



From the small intestine of Felis leopardus. 



78. ECHINORHYNCHUS GIGAS GoeZC. 



Small intestine of the hog, Sus scrofa. 



79. ECHINORHYNCHUS MICROCEPHALUS Rud. 



Echinorhynchus tortuosus Leidy, Pr. A. N. S., v, 97. 

 Found in the mesentery of Didelphis virginiana. 



80. EcHiNounYNCHUs STRiATUS Goezc. Body cylindro-clavate, anteriorly 

 minutely echinated. Proboscis obovate, with 12 to 15 circles of hooks. Neck 

 short, conical, unarmed. Length to 10 lines ; breadth anteriorly L} lines. 

 Color, orange. 



Several specimens were obtained by Jos. Jones from the intestine of Tantalus 

 loculator. 



81. ECHINORHYNCHUS MANIFESTUS Lcidy. 



Echinorhynchus Pici collaris. Leidy, Pr. A. N. S., v, 98. Body slightly com- 

 pressed cylindroid, most dilated anteriorly, obtuse posteriorly, transversely 

 corrugated. Proboscis subpyriform, with the rounded apex armed with 3 or 4 

 rows of hooks. Neck a simple linear constriction. Length 8 lines to an inch. 



Several specimens were found in the intestine of Picus collaris. 



82. ECHINORHYNCHUS HAMULATUS Leidy. 



Echinorhynchus emydis. Leidy, Pr. A. N. S., v, 207. Body long, white, sub-cla- 

 vate, curved. Proboscis sub-globular, with a single row of strong hooks and a 

 few rudimental booklets. Length 2 to 14 lines, breadth to ^ of a line. 



Frequent in the intestine of Emys geograjMca, E. insculpta, E. guttata, and E. 

 ^errata. From several individuals of the latter species, Mr. Joseph Jones ob- 

 tained more than a hundred specimens. 



83. Echinorhynchus acus Rud. 

 Intestine of Morrhua americana. 



84. Echinorhynchus proteus Westrumb. 

 Pr. A. N. S., V, 208. 



Intestine of Labrax lineatus. 



85. Echinorhynchus globulosus? Rud. 



Echinorhynchus lateralis Leidy, Pr. A. N. S., v, 207. Body sub-fusiform, most 

 narrowed posteriorly. Proboscis cylindrical, projecting laterally, furnished with 

 12 to 14 rows of hooks. Neck very short. Length to 1 inch, breadth to two- 

 fifths of a line. 



Intestine of Salmo fontinalis ; obtained by Prof. Baird and Prof. Agassiz. 



86. Echinorhynchus angustatus? Rud. 



Echinorhi/nchus socialis Leidy, Pr. A. N. S., v, 156. Body cylindroid, narrow- 

 ing posteriorly, frequently dilated anteriorly. Proboscis cylindrical, with 26 

 rows of hooks. Neck very short, conical, unarmed. Length from 6 lines to 21 

 inches, breadth to f of a line. 



Frequent in the intestine of Platessa plana. 



NEMATOIDEA. 



87. Trichina spiralis Owen. 

 Occasional in the Anglo-american. 



88. Trichina afkinis Diesing. 



Trichina spiralis Owen. Leidy, Pr. A. N. S., iii, 108. 

 Observed in the muscles of the hog, Sus scrofa. 



89. Anguillula aceti Ehrenberg. 



