1914-] F- H. Stewart : Indian Helminthology, No. II. 205 



(25) Wright, Contril)utioiis to American Helm., pp. 12-15, pi. 

 I, (Procs. of the Canadian Inst. Toronto, n.s., vol. i, 1884, PP- 

 63 66.) — P. oblongum. 



(26) Zeder, Nachtr, p. 203, pi. 4. — P. integerrimum. 



(27) Zeller, Zeitschr. f. Wiss. Zool. bd. 22, pp. 1-21, pi. i and 

 2. — P integerrimum. 



(28) Zeller, Zeitschr. f. Wiss. Zool. bd. 27, pp. 238-275, pi. 17 

 and iS. — P. inteeerrimum. 



List of Reference Letters in Text-Figures and Plates. 



Ant. — anterior; Ant.ut.d. — anterior uterine duct; cf at. 

 — male atrium; $ at. — female atrium; at.b. — atrial bulb; at. 

 p. — atrial pore.; b.m. — basement membrane; cav. — cavity; 

 c.t.n. — connective tissue nucleus; cot. — cotylophore ; d. — dorsal; 

 d»g. — dorsal ganglion ; dia. — diaphragm; d. Ip. — dorsal lip ; d.n.c. 

 ^dorsal nerve cord; ep. col.— columnar epithelium; ex. d. — 

 excretory duct ; ex. p. — excretory pore ; ex. ves. — excretory vesi- 

 cle ; f.l. — fibrous layer ; g.c. — ganglion cell ; gen. em. — genital 

 eminence ; gl. — gland innominate ; h. — hook ; i.c.l. inner cuti- 

 cular layer; i.e. — inner ectoderm of the sucker; int. — intestine; 

 int. tr. — transverse portion of the intestine ; L. — left ; l.n. — 

 lateral nerve ; l.n.c. — lateral nerve cord ; l.y.g.d. — longitudinal 

 yolk gland duct ; m.l. — muscular layer ; mus.— muscle ; o.c. — oral 

 cavity; o.c.l. — outer cuticular layer ; od. — oviduct; o.e. — outer ec- 

 toderm of the sucker ; ov. — ovary ; ov. fund. — ovarian fundus ; par. 

 n. — parenchyme nucleus; pe. — penis; ph. — phar5'nx; R. — right; 

 sp. — spicule; su, — sucker; s.v. — seminal vesicle; te — testis; ut. 

 — uterus; ut. ov. — uterine ovum: v. — ventral; vac. — vacuole; 

 vag. — vagina; v.d. — vas deferens; v. i.e. — vitello-intestinal canal ; 

 v.n.c— ventral nerve cord; v.n. co. — ventral nerve commissure ; 

 vu. — vulva ; vu. c. — vulvar cells ; y. d. — yolk duct ; y.g. — yolk 

 gland. 



