258 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



1883) Kailliet, Henry, and Sisoff, 1912; Hannannia squamata (Lins- 

 tow, 1883) Stiles and Hassall, 1920. 



Hosts. — Primary: Phalacrocorax carbo, Carbo cormoranus; sec- 

 ondary: Unknown. 



Location. — Intestine. 



Morphology. — Echinuria (p. 244) : Mouth with 2 rounded hyaline 

 lateral lips, only slightly projecting. Esophagus one-fourth of total 

 body length. Tail 1/288 of body length. Body attenuated anteriorly 

 and thickened posteriorly. In the submedian lines are cordons 

 (fig. 321« and b) made up of peculiar ring-like bands which appear 

 on the margin as posteriorly directed scales ; the cordons anastomose 

 1 mm. from the head end; at each point of anastomosis there is a 

 large 3-pointed cervical papilla from which there extends posteriorly 



Fig. 321. — Echinuria squamata. a, Anterior end; b, detail of cordon. After 



Linstow, 1883 



a simple straight cordon, according to Linstow. There is a ques- 

 tion as to whether this simple straight cordon as described by Lins- 

 tow may not be a lateral ala or a prominent lateral line; he states 

 that these cordons are in the dorsal and ventral lines, but as they 

 proceed from the lateral cervical papillae they should be in the 

 lateral lines. 



Male unknown. 



Female 24 mm. long by 72G> wide. Eggs 39/x by 24/*, thick-shelled. 



Life history. — Unknown; probably involves intermediate stages 

 in other hosts. 



Distribution. — Asia (Turkestan ) . 



Genus RUSGUNIELLA Seurat, 1919a 



Synonyms. — Filaria Mueller, 1787, part; Acuaria Bremser, 1811, 

 part; Spiroptera Rudolphi, 1819, part; Dispharagus Dujardin, 1845, 

 part. 



Gene'i te diagnosis-. — Acuariinae (p. 211) : Body elongate, relatively 

 slender. Cephalic region with 2 cutaneous ornamentations, crescent 



