306 Macieay Memoriat Vouume. 
RHABDITIS MONHYSTERA. 
Fig. 1. Female worm. Fig. 2. Male worm. Fig. 3. Tail of a male. Fig. 4. Head. Fig. 5. Tail of a 
female. Fig. 6. An egg with embryo. 
a, blind end of ovary ; b, egg ; ¢, vulva; d, egg ; e, flexure in ovary; f, anus; g, ductus ejaculatorius ; 
h, spiculum ; 7, anterior group, ribs of bursa ; 7, median group, ribs of bursa; &, posterior group, 
ribs of bursa ; 7, pharynx; m, cesophagus; m, median bulb ; 0, nerve-ring ; p, excretory pore ; 
g, cardiac bulb; 7, intestine; s, flexure in testicle; ¢, vas deferens; w, papille on lips; », 
pharynx ; w, rectum ; 2, lateral pores on tail of female ; y, embryo. 
RHABDITIS PELLIOIDES. 
Fig. 1. A female worm. Fig. 2. Head. Fig. 3. Tail. Fig. 4. Small portion of the body. Fig. 5. Neck 
- 
and head. Fig. 6. Tail ofa male. Fig. 7. Tail of a male. 
a, lips ; 6, pharynx ; c, median bulb; d, nerve-ring ; e¢, cardiac bulb ; f, pharynx ; g, papille ; h, lip ; 
z, anus; j, lateral wings ; A, flexure in ovary ; /, blind end of testicle; m, ribs of bursa; n, 
spermatozoa ; 0, bursa; p, egg; g, ribs of bursa; 7, ribs of bursa; s, egg; ¢, vulva; wu, anus; v, 
median bulb ; w, ribs of bursa; x, excretory pore ; ¥, ribs of bursa ; 2, ribs of bursa. 
PLATE XXXIXx. 
TRIPYLA MINOR. 
Fig. 1. Female worm. Fig. 2. Head of the same worm more highly magnified. Fig. 3. Tail of a female. 
Fig. 4. Tail of a female. Fig. 5. Tail of a female. Fig. 6. Front view of head. Fig. 7. Spinneret 
in the terminus of the tail. (Figs. 3, 4, 5 show difference in form and amount of motion.) 
a, one of the papille round the mouth; 4, one of the lateral set ; c, one of the submedian sete ; d, 
supposed lateral organ; e, anus; /, spinneret opening; g, anus; A, anus; 7, nerve-ring ; J, 
cardiac collum; k, egg; J, vulva; m, lateral seta ; m, one of the pairs of submedian setz ; 0, 
anus ; p, pharynx. 
PRISMATOLAIMUS INTERMEDIUS. 
Fig. 1. Female worm. Fig. 2. Head of the same worm more highly magnified. Fig. 3. Cardiac region 
showing structures (?) of unknown significance. Fig. 4. Portion of the female near the vulva. 
Fig. 5. Anal region. Fig. 6. Tail. Fig. 7. Terminus of tail. Fig. 8. Portion of body drawn to 
show striations and intestine. 
a, cephalic sete ; b, pharynx ; ¢, esophagus ; d, ovum; e, rectum; f, vulva; g, anus ; , posterior end 
of the esophagus ; 7, structures of unknown significance ; j, beginning of the intestine ; 4, blind 
end of ovary; /, vulva; m, terminus. 
DIPLOGASTER PARVUS. 
Fig. 1. Female worm. Fig. 2. Neck and head of another worm. Fig. 3. Head of female shown in Fig. 1. 
Fig. 4. Side view of body. Fig. 5. Anal region of a maie. 
a, pharynx ; 6, dorsal tooth ; ¢, lateral field; d, median bulb; e, lips; f, dorsal tooth; g, pharynx; h, 
cardiac bulb; 7, flexure of the ovary; j, blind end of ovary; &, vulva; /, anus; m, median 
bulb; n, nerve-ring; 0, cardiac bulb; p, intestine; g, male papilla; 7, male papilla; s, male 
papilla ; ¢, male pa; Na; w, male papilla; v, left spiculum ; w, accessory piece. 
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