44 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 81 



Location. — Large intestine. 



Distribution. — North America (Philadelphia Zoological Garden; 

 National Zoological Park, Washington, D. C. ; Mexico), South 

 America (Brazil), and Africa (Belgian Congo). 



Remarks. — The above description is based largely upon specimens 

 (U.S.N.M. Helm. Coll. No. 24716), collected at Washington, D. C, 

 July 16, 1921, by Dr. E. A. Chapin, these flukes being well pre- 

 served and fully mature. Other specimens available for comparison 

 consisted of three lots as follows: U.S.N.M. Helm. Coll. No. 5775, 

 from the Leidy collection, probably a part of the specimens described 

 by Leidy (1891) ; U.S.N.M. Helm. Coll. No. 18425, collected at 

 Washington, D. C, November 14, 1916, by Dr. L. T. Giltner; and 

 U.S.N.M. Helm. Coll. No. 8416, labeled " F. 1063, ChiorcMs fabaceus 

 Dies., stomach and intestine, Manatus senegalensis, Banana, Aug. 

 1915." The last-named material is from the MacCallum collection 

 and represents a part of the lot of specimens described by Stunkard 

 (1930). 



All the specimens examined from these different collections agree 

 in general with the description given for ChiorcMs fabaceus by 

 Fischoeder (1903). The majority of the specimens, however, were 

 immature and smaller than the ones upon which the above descrip- 

 tion is based, and considerable variation was found to exist, espe- 

 cially as regards the shape of the testes. The Leidy specimens 

 were the most immature, and in these the testes varied in shape from 

 spherical to very slightly lobed, none showing the typical X-shaped 

 testes characteristic of the species. They agree, however, in all other 

 respects and must be regarded as the same species as those of the 

 other lots which correspond more closely to the description given 

 by Fischoeder. 



Family NOTOCOTYLIDAE Liihe, 1909 



Family diagnosis. — Small to medium-sized monostomes; body 

 usually elongate, tapering anteriorly and rounded posteriorly. 

 Ventral surface usually concave, with or without longitudinal rows 

 of glands or ridges. Oral sucker terminal; pharynx absent; esoph- 

 agus short; intestinal ceca slender, usually provided with short 

 diverticula. Excretory pore dorsal, near posterior end of body; ex- 

 cretory vesicle with short stem and long branches, which unite near 

 anterior end of body. Genital pore median and situated in anterior 

 part of body, except in Nudacotyle where it is lateral and in pos- 

 terior part of body; cirrus pouch elongate; testes postequatorial, 

 in same transverse plane, usually extracecal. Ovary between testes ; 

 Mehlis's gland complex preovarial; vitellaria lateral, pretesticular ; 



