PARASITES OF FISHES OF BEAUFORT, NORTH CAROLINA. 343 



7. Anthobothrium laciniatum Linton. [Fig. 126.] 



1901. — July 8, 1, small (4.5 mm. in length i, from spiral valve. A free segment with the anterior 

 end prolonged into a short, slender neck, surmounted by a round knob, which functioned as a sucker, 

 measured 1.68 nun. in length and 0.7 mm. in breadth. July 9, numerous, length about 9 mm.; neck 

 and anterior segments densely covered with exceedingly minute spines; ripe segments rather numer- 

 ous, tree, active, the largest measuring, when fully extended, 6 mm. in length and 2 nun. in breadth, 

 the central portion being tilled with ova, which are about 0.02 mm. in diameter. July IS, 2. July 

 20,2. July 22, several. July 24, 2. July 24, few. July 25, 6. July 26, few. July 27, few. Aug. 

 5, 2. Aug. 6, 5. Aug. 7, several. Aug. 10, several. Aug. 15, few. Aug. lti, few. 



L902. — .Inly II, L5, maximum length, !•"> nun. July 23, few. Aug. 14, numerous, with large 

 numbers of free segments. 



8. Orossobothrium angmtum Linton. ( Orgymatobothrium angustum Linton.) 



L901. — July 22, rather numerous; small, some not yet begun to form segments. July 24, 1. July 

 24, few, small. July 25, 6. July 27, few, small. Aug. 5, 2. Aug. 7, few. Aug. 15, few. Aug. 16, 2. 



1902.— Found on July 11, 18, 2:5, and Aug. 14; maximum number found in one host, 30. Dimen- 

 sions of 1 in millimeters: Length 7.5; diameter of bothrium 0.15; of neck (1. 07 toll. 22; distance to first 

 segment 2; last segment, length 1.17; breadth 0.4s. 



9. Plioreiobolhriwm lasium Linton. 



1901. — July 6, 2, with several free segments. July 8, 1, and free segments. July 18, 1, and free 

 segments. July 20, 1. July 25, 12, and free segments. Aug. 5, :;. Aug. lti, 1. 

 1902.— July 11, 1. 



10. Phoreiobothrium triloculalum Linton. 



1901. — July 24, 24. Most of these specimens were about. 40 mm. in length. There were also 

 numerous free segments with c<_ r '_ r s. These segments soon became' dark colored in sea water and dis- 

 charged tin' eggs on the bottom of the glass vessel in which they were lying. 



1902. — July 11, 2; length 25 nun. July 10, 1 scolex, no segments yet developed; length 2 mm.; 

 hooks small. The specimen looks very much like some of the more advanced specimens of Scolex 

 polymorphus which hav ;casionally been found, save that the bothria have assumed the character- 

 istics of /'. loculatum. 



11. Rhynchobothrium sp. [Figs. 129-130c] 



1902. — July 11, 1. The following notes were made on the living worm: Bothria relatively large, 

 with thin, flexible borders, which in certain states of contraction appear to be somewhat frilled. 

 While lying in sea water the edges of the bothria were in continual motion, expanding and contract- 

 ing, and so producing a constant wave-like motion. Head and neck white, body yellowish white. 

 Head approximately two and a half times as broad as the neck at the widest part. Neck widest next to 

 the head, tapering to its posterior end, where it is still wider than the anterior segments. The body 

 displayed a tendency to coil into a spiral, which made its study in life difficult. It was straightened 

 out in the killing fluid, when it measured Mb mm. in length, with enough fragments to bring the total 

 length up to 45 mm. Proboseides partly everted, showing hooks of various sizes. In the killing fluid 

 the head and neck shortened somewhat and remained much thicker than the body. 



The bothria in the alcoholic specimen are nearly circular, about 1.12 mm. in diameter; contractile 

 bulbs 0.9 in length and 0.3 in diameter; proboseides 0.15 in diameter excluding and 0.21 including 

 hooks; large hooks 0.090 in length, small hooks 0.021; the large hooks are on the median, the small 

 hooks mainly on the lateral side of the proboscis. 



12. Rhynchobothrium plicatum sp. nov. 

 See No. 2 under Sphyrna tiburo. 



1901. — July 22, several; scolices still attached to blastocysts, but completely everted ami very- 

 active; a red pigment patch in neck at anterior end of contractile bulbs. July 24, 2, with scolices; 

 attached to blastocysts; other blastocysts in the lot from which the scolices were lost in the collecting. 

 The length of the part to which the scolex was attached was, after killing, 8 mm. My notes made at 

 the time of collecting place this species near R. lenuispine. July 25, 10. One in this lot was noticed 

 with the contraction fold in the vicinity of the contractile bulbs, as noted under No. 2, Sphyrna tiburo. 

 This specimen had a red pigment patch in the neck, a feature not present in all. July 26, few. July 

 27, few; contraction fold at anterior end of bulbs. Aug. 10, few. 



