1913.] NATURAL SCIENCES OF PHILADELPHIA. 147 



lie in the pro ventricles of birds. They vary in size, in different 

 species, from 2 to 7 mm. in length. The striking peculiarity of 

 this nematode is the subglobular form and blood-red color of the 

 female. From the upper pole of the worm a short head projects 

 and from the lower a short tail.^ 



I have found the following species described as infesting the 

 hooded crow, snipe, plover, woodcock, goose, black coot, widgeon, 

 grosbeak, seagull: Tropidocerca fississpina (Schlatthauber), T. 

 paradoxa (Diesing), T. gijncecophila (Molin), T. hispinosa (Molin), 

 T. glohosa (V. Linstow), T. inermis (V. Linstow), T. tenuis (Lieber- 

 kiihn), T. certa (Leidy). 



Upon referring to these species I find that the structure of the 

 mouth and tail parts conforms closely to the worm I have been 

 studying. There are certain marked differences, however, which 

 seem sufficient to warrant the naming of a new species: 



1. Its tightly coiled form, which is not mentioned or figured 

 in any of the other species. 



2. Absence of the four equidistant longitudinal muscular bands 

 which by contracting give the subglobular shape of other Tropi- 

 docercse. 



3. The remarkable length of the longer spicule of the male. 



4. Disposition of the male papillae. 



Believing the first-named difference to be the most striking, I 

 have given the nam6 contorta to the species. 

 Trichocephalus dispar (Rudolphi). 



From the large intestine of a Rhesus macaque (P. Z. G. No. 2,744) 

 three mature worms were obtained. They were very firmly attached 

 to the mucosa and more deeply imbedded than it is customary to 

 find them. The specimen showed tightly clinging detritus along the 

 anterior attenuated portion which could not be removed with a 

 brush. The case is of value because this helminthiasis was 

 associated with a purulent peritonitis. The text-book descriptions 

 do not assign any marked pathogenic properties to this worm. 

 It would seem hypercritical in this case to argue that such asso- 

 ciation is a mere coincidence. Tricocephalus dispar has also been 

 found in Pithecus sntyrus, Cercopithecus mona, C. potas, and C. sahwus, 

 Innuus erythryacus, I. ecaudatus, Cyanocephalus sphinx, and C. 

 porcarius and in Mycetes senicidus. It is mentioned as Tricocephalus 

 lemuris (Rud.) and T. palceformis by Raillet. Its occurrence in 



2 Diesing, Syst. Helminth., II, p. 207. 



