RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 8 1 



frontal border. Length up to au inch and a half. Point Judith 



and Great Egg Harbor. 



Terebella Oruata, Leidy. (PI. XI, figs. 44, 45). Body with 



about one hundred segments, of which forty- five are setigerous. 



The anterior ten ventral plates transversely oblong square, those 



succeeding abruptly diminished in size. Tentaculse numerous ; 



branchiae in three pairs. Color brownish red. Length to four inches. 



Lives in tubes of mud. Found at Point Judith, Atlantic City, and 



Beesley's point. 



I found the young of this species at Point Judith. It had the 



appearance of that of I'crebella nebulosa, Mont., represented in fig. 



24, pi. 3, of M. Edward's Rech. Anat. et Phys., etc. The single 



specimen obtained was three lines long. There were twelve tentac- 



ulae twenty-five eyes around the head, and twenty-eight segments 



to the bod}', of which sixteen were setigerous. 



Spirorbis Spirilliun, Lamarck. On Chondnis crispiis, Point Judith. 

 Torquea, Leidy. Body cylindrical, narrowed at the extremities. 



Tentaculse numerous, attached laterally to the head, capable of very 



great extension and contraction by the passage to and fro of blood 



corpuscles from the cavity of the body. Eyes none. Setae in two 

 rows, three to twelve in a fasciculus, extremities lanceolate. Podal 

 hooks in two rows, short, from twelve to forty in each transverse 

 series, supported at the edge of a laminar process stiffened with fine, 

 simple setae. 



Torquea Exlmia, Leidy. (PI. XI, figs. 51, 52). Body soft, blood 

 red. Tentaculae very numerous, capable of very great extension 

 by the propulsion into them of the bright red corpuscles, with which 

 the cavity of the body is filled. Setae anteriorly in fasciculi of 

 twelve, posteriorly from three to six. Podal hooks commencing at 

 the eighth segment, from twelve to forty in each series. Worm 

 half an inch to an inch in length, with from forty to .sixty segments. 

 Obtained from mud and sand below low-tide mark. Point Judith. 

 This worm is remarkable for its softness, its blood red color, its 

 numerous extensible tentacles, and its numerous podal hooks. It is 

 capable of .slowly progressing by means of its tentaculae. In the 

 process, these are extended by having forced into them the bright 

 red corpuscles which fill the visceral cavity of the body ; they then 

 attach themselves by their extremities to the surface upon which the 

 animal is lying, and by subsequent contraction the body is dragged 

 after them. 



Cirrhatulus Fragilis, Leidy. (PI. XI, figs. 39-43-) Body cylin- 

 drical, narrowed towards the extremities, reddish orange color, pos- 

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