EXPLANATION OF ILLUSTRATIONS Nos. 397 and 398 
dorsal 
Abbreviations: a. acetabulum; an. anus; c. cirrus organ; d. dorsal ray; exd. externo-d 
ray; exl. externo-lateral; exv. excretory vessels; g. p. genital pore; qub. gubernaculum; 2. intes- 
tinal caeca; 1. v. latero-ventral; met. metraterm; m. l. medio-lateral; 0. ovary; 0. oesophagus; 
os. oral sucker; ph. pharynx; p. l. postero-lateral; pp. prebursal papilla; s.r. seminal receptacle; 
t1 and ?2 anterior and posterior testes; wu. uterus; v. vitellaria; vu. vulva; v. v. ventro-ventral. 



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No. 397 
Colobostrongylus strongt 
Anterior extremity showing buccal teeth and kink in oesophagus. 
2. Posterior extremity of female showing vulva, vagina, ete. 
3. Bursa of male flattened out to show distribution of rays. 
4. Posterior extremity of male. 
