IM \TE I. 

 Oftjuris frulutii, Linstow: (r:i ra lucida drawings; a line is drawn from each figure to the scale of enlargement employed). 



l''[ii. 1. Outline Of Complete worm: a, intoline; li, vaginal protru- In. I. IIc:id end, >ho\\iiiL' e-ophagus and liulli: <i, fusiform CUtic- 



sion: r, intracorporeal |mrtion of vaginal tube: ./. </,, <!.,. uterine canal ular swelling; l>. c.-o|iliau'ns: 6, esoph:igr:d luilli, willi iti armature, 



and its expanded portions; e, oviduct and ovarium; /, anus; 0, Moph- Ki;. i>. Transverse section of esophagus in its posterior portion, 



agus and bulb; h, fusiform cuticular expansion at head end. showing its triradiate lumen. 



I'"' -'. Frontal view of head end: a, dorsal lip; o,, ventral lips; 6, I i., ti. Details of genital apparatus: a, body wall; l>, < \tracorpo- 



one of the three lip-like extensions of cuticle over the lips proper; r, real \aninal protrusion; c, intracorporeal portion of vagina; </, (/,. << 



one of the two dorsolateral cuticular swellings showing its three papilla-. uterine canal with its cyst-like expansions; e, ovarium; r,. e, .<-,. oviduct 



Fu;. 3. Lateral view of head end. plicated along uterus and entering posterior end of latter at e t . 



PLATE II. 



Tit niit iHtriiiliu-iiri and ( W//m lirninii: (camera lucida drawings; a line from each drawing indicates the scale of amplification employed). 



I ici. 1. T. piiriiiliu -iiri: head and lirst links, showing the conical I MI;, li. r. lirmrni: frontal view of head, showing depressed rostel- 



ui armed rostellum, and the oval suckers with a curved slit-like linn surrounded by row of numerous small hooks, and the globose 



orilice. suckers with circular orifices. 



I H; '2. Frontal view of head of '/'. iHini<ln.riiri. FIG. 7. Lateral view of head and anterior segments of C. browni. 



1 ic. H. Outline of anterior .segments (2 cm. from head) of Flu. 8. Isolated hook from armature of head of C. broirm. 



T. paradoxuri. I K;. '.(. Diagrammatic drawing of fully developed but non-gravid 



. I. Outline of segment of T. fmradojcuri near posterior portion segment of C. browni at 8 cm. from head (constructed from sections 



of strobile, showing t lie capacious genital pore. and from compressed segments): C, cirrus; T, testicles; RS, rcceptac- 



Fui. .">. Ovum of '/'. i>rn<ln.(nri. uluin seminis; Or, ovary; \'g, vitelline gland; Vl, uterus. 



Fio. 10. Ovum of C. browni. 



PLATE III. 



Tin in i eunecles: (camera lucida drawings, except Fig. 4, which is diagrammatic in part, the general outlines, however, being from camera lucida 

 tracings; the scale of enlargement employed is indicated by a line drawn from each drawing). 



Fin. 1. Head and incompletely grown strobile, without gravid links. Fio. 4. Fully developed, but as yet non-gravid segment (partly 



1 Hi. 2. Frontal view of head. diagrammatic); shows genital parts of segment: cirrus pouch, (C); 



l-'iii. :?. Segments taken from a fully developed strobile from near genital pore, (GP); vagina, (V); receptaculum seminis, (RS); uterus, 



head, to show the early development of the genital parts. (These (Ut); testicles, (T); ovary, (Or), and vitelline gland, (V'G). 



were drawn by camera lucida from compressed links, which were origi- Fio. 5. Ovum with surrounding amnion. 



nally considerably larger than the first links of the undeveloped 



strobile in Fig. 1, but which, by the compression, were much increased 



in both length and width). 



PLATE IV 

 leftttijitera, Rud., new variety: (camera lucida drawings; a line from each drawing indicates the scale of enlargement employed). 



Fie;. 1. Two ova, the one to the right containing a larval worm. Fio. 5. Anterior view of head, showing lips and papillie (dorsal 



1'ic. J Anterior end of worm, to show extent and shape of alar lip above), and beginnings of cuticular expansions laterally. 



cuticular expansions (a). FIG. 6. Ventral surface of tail of male; the cuticle, having been cut 



Fie. .'{. Internal aspect of dorsal lip, showing denticulate border on the dorsum, is seen spread out laterally ; shows the details of the 



and lobes of pulpa: <t, denticulate border of lip; b, outer paired lobe; postcloacal papilhe: r, cloaca. 



r, inner paired lobe; d, unpaired lobe. Fio. 7. Lateral view of tail of .male, showing both postcloacal and 



FIG. 4. External view of head from ventral surface, showing the precloacal papilht- : c, cloaca. 



two ventral lips with their papilla-; on either side the first part of Fio. 8. Tail of female ; a, anus, 

 alar cuticular expansion. 



PLATE V. 

 Ascaris aquittae: (camera lucida drawings). 



1 ic. 1. Inner aspect of dorsal lip: A, interlabium; B, lobus impar; FIG. 3. Frontal aspect of head, showing the lips and interlabia and 



C, inner paired lobe; D, outer paired lobe. (Same scale of enlarge- the papilla? of the lips, 



ment as Fig. 2.) F'O- 4. Lateral aspect of head. 



G. 2. Outer aspect of dorsal lip, showing papilla-, and the deep Fio. 5. Ovum, drawn to show in upper part the tuberculated outer 



incision in anterior margin. surface of the shell, and in the lower part the segmented interior. 



