412 PROCEEDINGS OF THE ACADEMY OF [1890. 



obtained from the intestine of an Iguana, Cyclura baeolopha, Cope, 

 from the island of New Providence. 



10. Trichocephalus affinis Rudolphi. 



About a ])int measure of this worm was taken from the large in- 

 testine of a camel, Camelus bacirianus, which died at the Zoological 

 Garden and was dissected at the Biological Department of the Uni- 

 versit}' , in the museum of which the worms are preserved. 



11. Filaria horrida Diesing. 



A dozen females and as many males were taken from the body 

 cavity of an American Ostrich, JRhea aviericana ; from the Zoologi- 

 cal Garden, dissected at the Biological Department of the Univer- 

 sity. Preserved in the museum. 



12. Filaria obtusa Rudolphi. 



Body pinkish-white, cylindrical ; cephalic end rounded, smooth ; 

 caudal end obtuse. About a dozen specimens, female and male, 

 from the abdominal cavity of the Barn Swallow, Chelidon erythro- 

 gaster. Obtained by Dr. B. H. Warren, Chester Co. 



The mouth organs consist of a pair of triloloate, elongated clavate 

 appendages. Dujardiu figures them as conjoined in loops. Length 

 of the organs 0*12 mm. long. Spicules of penis 0*75 mm. long. 

 Ova 0*04 mm. long, 0"032 mm. broad. 



13. Cheilospirura uncinipenis Diesing. 

 Spiropte7'a uncini'penis Molin. 



Body cylindrical, nearly equally tapering at the extremities ; 

 head naked. Caudal extremity of the female obtuse ; of the male 

 spiral, alate ; alae longitudinally corrugated. Penis long, curved 

 and acuminate ; sheath hooked at the extremity, narrowly bialate. 



Several dozen from the gizzard of the Rhea aviericana. Collec- 

 tion of the Biological Department of the University. Females 25 

 to 32 mm. long ; males 20 mm. long. 



14. Physaloptera retusa Rudolphi. 



Body cylindrical, most tapering in advance ; mouth retractile, 

 with six papillae ; caudal end acute ; in the male^ bialate, with the 

 alae supported by four ribs. Four males from 10 to 12 mm. long 



and a female 24 mm. long, from the intestine of Varanus ? 



Submitted by Dr. H. C. Chapman. 



15. Trichosomum 1 tenuissimum n. s. 



In a mature male Brown Rat, Mus decumanus, embedded in the 

 liver, were a number of irregular milk-white bodies, some appearing 



