DIGENETIC TREMATODES-MANTER AND VAN CLEAVE 333 



Of follicles at ovarian level; follicles fairly large 8 or 9 on each 

 s de, often pressed close together. Uterus extending posterior to 

 testes ; eggs, more or less collapsed in utero, 27 to 34^ by IS to 18^., 

 almost always 32 to 34^ by 13 to 16^. ■ .-, 



About 10 specimens from a related host, Umbriw, ro»oador, dif- 

 fered only in being somewhat larger (to 1.802 mm. in length), 

 suckers somewhat nearer equal in size, and almost always in having 

 a longer space between posterior extent of the uterus and posterior 



^""msU-Uenticirrhus undulatus (Girard), California corbina; 

 Roncador stearnsi (Steindachner), spotiin croaker; Umbnna ron- 

 cador Jordan and Gilbert, yellowfln croaker. 



Location. — Intestine. „ ^, „ „ , ,- n xt„ 971 /17 



Tj,pes.-Holotype and paratype, U.S.N.M. Helm. Coll. No. 37147. 

 Discussion.-D. triradiatus differs from D. parvus Manter, 1947, 

 in its pointed posterior end, longer hindbody, much smaller ace- 

 tabu um and in lack of a prostatic vesicle. It differs from D rmolec- 

 mus Manter, 1947, in development of the vitellaria shorter ceca 

 diagonal testes, lack of prostatic vesicle, and smaller eggs. It is 

 probably most similar to D. paxillus Linton, 1910. Some apparent 

 differences such as the more posterior genital pore and the smuous 

 ceca might be due to the extreme extension of the acetabulum. 

 However, D. triradiatus has diagonal rather than tandem testes 

 fhe excretory vesicle extends past the posterior testis, a distinct 

 prostatic vesicle is lacking, and the eggs are almost always dis- 

 Mnctly smaller (usually 32 to 34^ by 13 to 16^ as compared with 

 34 to 45^ by 14 to 18^) . Eggs of D. paxillus were measured m nine 

 specimens from several host species at Tortugas, Fla., and only in 

 one (from Balistes vetula.) were eggs found less than 34^ long. 



The name triradiatus is suggested by the triradiate appearance 

 given the body by the long acetabular stalk. 



Family HAPLOSPLANCHNIDAE 

 Genus HAPLOSPLANCHNUS Looss, 1902 



HAPLOSPLANCHNUS GIRELLAE, new specie. 



Plate 13, Figures 17, 18 



Description—Sm^W, elongate distomes of about equal width and 

 thickness widest and thickest at acetabular level; rounded an- 

 te orly bit narrowing almost to a point posteriorly. The following 

 measurements are based on seven specimens showing a dorsal 

 or ventral view and three specimens showing, as did most of the 



eXenl a side view (pi. 13 fig. 17) . Length 1-073 to L569 mm. 

 width 0.219 to 0.290 mm.; thickness 0.226 to 0.277 mm. Ural 



