250 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



Spiroptera falcinelli Kudolphi, 1819, is a nomen nudum, and hence 

 not available. 



Hosts. — Primary: Ibis falcinellus, FalcineUus igneus; secondary: 

 Unknown. 



Location. — In muscular ventriculus (gizzard). 



Morphology. — Echinuria (p. 244) : Mouth with 2 small incon- 

 spicuous lips. Cuticula with dense transverse striations which are 

 twisted irregularly. Four cordons (fig. 313<z), anastomosing. 



Male 7 to 8 mm. long by 200/* wide. Tail (fig. 3135) curved. 

 Caudal alae wide, semilunar, and transversely striated. Molin states 

 that there are 7 pairs of caudal papillae, but only figures 3 pairs 

 of postanal papillae. 



Figs. 312-313. — 312, Echinuria calcarata. a, lateral and h, ventral view of 

 head; c, female tail. After Drasche, 1884. 313, Echinuria contorta. a, 

 anterior end ; b, male tail ; c, female tail, showing vulva and anus. After 

 Molin, 1861 



Female 19 mm. long by 40/t wide. Caudal extremity (fig. 313c) 

 with short, obtusely conical lateral appendages. Anus said to be at 

 caudal apex. Vulva somewhat anterior to anus. 



Life history. — Unknown; probably involves intermediate stages 

 in other hosts (see E. uncinata, p. 24G). 



Distribution. — Europe (Italy (Padua) and Austria (Vienna)). 



ECHINURIA DECORATA, new species 



Hosts. — Primary: Colymbus auritus; secondary: Unknown. 



Location. — Beneath lining of gizzard. 



Morphology.— Echinuria (p. 244) : No cephalic papillae observed. 

 Mouth with 2 simple triangular lateral lips, followed by a pharynx 

 and a two-part esophagus. Esophagus long, more than one-fourth 

 of body length. Nerve ring at union of pharynx and anterior esoph- 

 agus. Cuticula transversely striated. Cordons (fig. 314 a and b) 

 long and becoming progressively wider until they practically cover 

 the entire body width; they are elaborate in structure, the outer 



