PARASITES OF FISHES OF BEAUFORT, NORTH CAROLINA. 425 



PLATE XXI. 

 Distomum monticeUii Linton. 



Fh;. 154. — Specimen from cobia (Rachycentron canadus). Actual length 5 mm. Sketched from life, 



lint senile details added from stained and mounted specimens. 

 Fig. 155. — Ovary and vitellaria of distome identified as this species, from the sand pike (Synodus 



fcetens). Actual length of distome 4.2 mm. 



Distomum tornatum Rudolphi. From the whiting (Menticirrhus americai 



Fk;. 156. — Sketch made from specimen in glycerin. Actual length 10 mm. 



Fig. 157. — Ova of distome from sea robin {Prionotus scitulus). Actual length 0.03 mm. 



PLATE XXII. 



Fig. 158. — Distomum monlicellii Linton. Immature specimen from Mack sea bass ( ' '•enlropristes striatus) . 



Actual length 1.17 mm. 

 Fig. 159. — Distomum globiporum Rudolphi (?), from rock-fish [Fundulus majalis). Actual length 



2.25 mm. 

 Fio. 160. — Distomum appendiculatum Rudolphi, from menhaden (Brevoortia tyrannus). Specimen in 



poor condition when found. Actual length 0.63 nun. 

 Figs. J 61 and 162.— Distomes from sole (Symphurus plagiusa). These specimens were obliquely and 



conspicuously truncate when first seen, Incoming somewhat less so under pressure. Actual 



length 0.78 and 0.79 mm., respectively; specimens in weak formalin when sketched. 

 Fio. 103. — Spines from anterior regions of same. Actual length of spine 0.005 mm. 

 Fig. 164. — Probably same species, from same host, but collected on different date. Sketch made from 



stained specimen mounted in balsam; actual length 1.05 nun. 

 Fm. 165. — Distomum sp., from puffer (Spheroidesmaoulatus). Actual leng'h 1.27 mm. 

 1- [G. 166. — Immature distome in intestine of anchovy (Stolephorus brownii). Actual length 0.25 mm. 

 Fig. 167. — Distomum sp., from toad-fish (Opsanus tau). Actual length 0.65 mm.; life. Like many 



finds of distomes, in poor condition when seen; from same lot as figure 205. Dorsal view. Ova 



in this species distinctly fusiform. 



PLATE XXIII. 



Distomes from silver perch [Bairdiella chrysura). 



Fio. 168. — Ventral view. Life; actual length 0.8 mm. 



Fn,. 169. — Another specimen from same lot. Life; X 135. 



Fio. 170. — Another specimen from same lot. Life; X 80. 



Figures 168, 169, and 170 wen- sketched from living specimens collected on the same day. See text for 

 notes. Incidentally these figures show some of the difficulties which are encountered in identi- 

 fying distomes. 



Dixttimiim sp., from cobia (Rarhyivittrmt canadus). 



Fig. 171. — Lateral view. Life; actual length 1 mm. 

 Fig. 172. — Ova of same. Actual length 0.04 mm. 



Distomum globiporum Rudolphi. From spot (Leiostomus mnthurus). 



Fig. 173. — Immature specimen, dorsal view. Actual length 0.9 mm. (See Figs. 198, 199.) 



Distomum bothryophoron Olsson. From hog-fish | Orthoprislis chrysopterus). 



Fio. 174. — Ventral view. Life; actual length 1 mm. 

 Fig. 175. — Dorsal view of same. Life. 



