50 RESEARCHES IN HELMINTHOLOGV AND PARASITOLOGY. 



Rematk. — This is, so far as I can ascertain, the first Echiiiorhyn- 

 c/ius which has been detected in the Emydee. 



9. RchinorhyncJnis Lateralis, n. s.— Body cylindroid or subfusi- 

 forra ; posteriorly iiarrowed, with an obtusely rounded extremity. 

 Proboscia cylindrical, Vi of a line long, lateral or subterminal or 

 transversely projected, furnished with 12 transverse rows of strong 

 booklets, 6 in each row ; alternating ; neck short. Male without 

 copulatory appendage. 



Body from 2 lines to i inch in length ; breadth anteriorly from 

 i-4tli to 3-5ths of a line ; breadth posteriori}^ from i-5th to 2-5ths 

 of a line. 



Hab. — Seventy-six individuals were found within the intestine, 

 and according to Prof. Baird, from whom they were received, also 

 attached to the integument upon the interior of the body of Salmo 

 font 1)1 alls. 



Remark. — Closel}^ allied to E. a)igustatus, Rud. 



10. Echinor/iyjic/ms proteus. — Westrumb, De Helm. Acanth., p. 

 37 ; Duj. Hist. Nat. des Helminthes, p. 529. 



Body orange color, fusiform ; anteriorly slightly spherically di- 

 lated : posteriorly obtusely rounded. Proboscis cylindrical, with 

 twelve to twent}' transverse rows of booklets, t ran sversel}^ projected, 

 yellow. Neck long, posterior three-fourths filiform, anterior fourth 

 dilated into a spherical vesicle. 



lyength of body 3 to 6 lines ; neck 2 to 3 lines long, i-6th line 

 broad posteriorly. 



Hab. — Found very frequently in the large intestine, often in great 

 numbers, of Labra.x Imcatiis. 



Thelastoma, Leidv. 



11. Thelastoma Brevicaudatiim, u. s. — Body white, cylindrical, 

 anterior to commencement of ventriculus rapidly narrowed, conoidal ; 

 posteriorly abruptly rounded, with a very short spiculate tail. Gen- 

 erative aperture just posterior to middle. Anus just anterior to 

 posterior rounded termination. Ventriculus broadly dilated at com- 

 mencement, and moderately so at termination. 



Length of body i}( to 2 lines; anterior to ventriculus i-5oth 

 inch ; from anus to end of tail i -200th inch ; tail i-285th inch long ; 

 breadth of body just above anus i-i33d inch ; at middle i-8oth 

 inch; at commencement of ventriculus i-75th inch; cylindrical 

 portion of oesophagus i-66th inch long bj- i -666th inch broad ; pyri- 

 form portion i-25oth inch long by i-285th inch broad. Ovum 

 semi-oval, i -285th inch long by i-ioooth inch broad. 



