560 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 57. 



CENTROCESTUS CUSPIDATUS (Loobs, 1896) Looss, 1899. 

 Fig. 27. 



1896. Distomuvi cuspidatum Looss, 1896&, pp. 97-101, 104, pi. 7, figs. 64-65 



(in Milvus parasiticus; Egypt). 

 1899. Anoilctostoma cuspidatum (Looss, 1896) Stossich, 1899c, p. 15. 

 1899. Ccntrocestns cuspidatus (Looss, 1896) Looss, 1899&, pp. 582, 584 



(type of Centrocestus). 

 1913. Centrocestus cuspidatus cativnus Leipee, 1913, pp. 176-177, 1 fig. (ia 



dog; Formosa). 



OOJd 



26 



27 



FlOS. 26-27. 28.— COTYLOPHALLUS SIMIUS. VENTRAL VIEW. X HO. ORIGINAL. 27.— CENTROCESTUS 



CUSPIDATUS. Ventral view. X 128. After Looss, 1896. [For explanation of lettering see 



FOOTNOTE, P. 532.) 



Specifc diagnosis. — Centrocestus: About 0.5 mm. long by 0.35 nun. 

 wide when contracted, 0.75 to 0.8 mm. long when extended. Oral 

 sucker, 50 \t. in di^ameter. Mouth surrounded by a double crown of 

 spines, 36 in number, 18 in each row, 10 [a long by 3 p. wide at the 

 base. Pharynx, 30 ^ long by 25 \i wide, separated fi'om the oral 

 sucker by a well-developed prepharynx. When the neck is extended 

 the distance between the oral sucker and the pharynx may reach 



