330 REPORT OF COMMISSIONER OF FISH AND FISHERIES [624] 
tapered, obtuse, or slightly emarginate at the end, with a simple orifice. 
The blood contains minute, oblong corpuscles. Color milk-white. 
Length, 25™™ to 40™™; diameter, 0.5"" to 1™™. 
New Haven; Wood’s Hole; Casco Bay, Maine; very common under 
dead sea-weeds and stones near high-water mark. 
ENCHYTR.AZUS TRIVENTRALOPECTINATUS Minor. 5 
American Journal of Science, vol. xxxv, p. 36, 1863. 
In this species, according to Minor, there are three pairs of ventral 
fascicles of setze before the dorsal ones commence; the pharynx extends 
to the fourth pair of ventral fascicles, from which a narrow cesophagus 
extends to a little back of the sixth pair; here a gradual enlargement 
of the alimentary canal occurs, ending abruptly just back of the eighth 
in a narrow, twisted tube, and this gradually enlarges at the ninth ven- 
tral fascicle into a moderate sized alimentary canal. No eyes. Length, 
about 10"". 
New Haven, near high-water mark (Minor). 
BDELLODEA. 
Comparatively few leeches have hitherto been met with in this region. 
Many additional species, parasitic on fishes, undoubtedly remain to be 
discovered. 
BRANCHIOBDELLA RAVENELII Diesing. Plate XVIII, fig. 89. (p. 458.) 
* Sitzungsberichte der kais. Akad. der Wissenschaften, Wien, xxxili, p. 482, 1859, 
Phyllobranchus Ravenelit Girard, Proceedings of the American Association for 
the Advancement of Science for 1850, vol. iv, p. 124, 1851. (?) Branchellion 
Orbiniensis Quatrefages, Annals des sci. natur., sér. 3, vol. xviii, pp. 279-325, 
Plate 6, figs. 1-13, Pl. 7-8, 1852 (anatomy). 
In describing this species Mr. Girard mistook the anterior for the 
posterior end, and described the large posterior sucker, or acetabulum, 
as the head. The color is dark brown, purplish, or dark violaceous, 
specked with white. 
Vineyard Sound, on a stingray (Myliobatis Freminvillei), in several 
instances; a number usually occurred together. Charleston, South 
Carolina, on a “ skate,” species unknown (Girard). Atlantic Ocean, on 
a torpedo (Quatrefages). 
CYSTOBRANCHUS VIVIDUS Verrill. (p. 458.) 
American Journal of Science and Arts, ser. 3, vol. iii, p. 126, fig. 1, 1872. 
New Haven, on the minnow (Fundulus pisculentus), both in fresh and 
brackish water; November and December. 
ICHTHYOBDELLA FUNDULI Verrill. (p. 458.) 
American Journal of Science and Arts, loc. cit., p. 126. 
_ New Haven, on Fundulus pisculentus, with the last. 
