from the intestine of a cotton-tail rabbit, Lepus sylvaticus, 

 killed near Philadelphia, collected by Dr. H. C. Masland. 



21. Dipylidium caninum, (Linn.), has been met a number 

 of times in the small intestine of dogs in the laboratory, 

 usually two, three or more in a single host (Path. Mus., 32); 

 and once (Path. Hist., 1065) in the intestine of a domestic 

 cat in the hospital of the Veterinary Department of this 

 university (Vet. Hosp., 1330). This last example is by some 

 regarded as a separate species, and described under the 

 name Tcenia elliptica; but aside from the usually smaller 

 size of the strobile and proglottides and the slightly larger 

 size of the ova, does not materially differ from canine examples 

 and is at most a mere variety (D. caninum, var. cati). 



22. Cotugnia broumi, n. s. (Path. Hist., 1672), from the 

 intestine of a banded parrakeet, Palceornis fasciatus (P. Z. G. 

 Lab., 1052). For description see special article in this 

 journal (p. 41). 



23. Hymenolepis nana, (v. Siebold). These specimens 

 (Path. Mus., 5), including in all over a thousand strobiles, 

 were obtained by Dr. L. E. Magnenat from the stools of three 

 children in Amarillo, Texas, after administration of male 

 fern. The hosts were all from the same family, and later 

 Dr. Magnenat found a fourth child in the same family also 

 infested. The ova had been detected in the feces by the 

 physician. Probably many strobiles escaped notice in 

 collection of the material, and the total number in the intes- 

 tines was surely greater than represented by the material 

 in hand, as Dr. Magnenat subsequent to the medication 

 found numerous ova persisting in the stools of his patients. 



24. Hymenolepis diminuta, (Rudolphi) (Path. Hist., 1646), 

 from the intestine of a Texas cotton rat, Sigmodon 

 hispidus texianus (P. Z. G. Lab., 1096). The material 

 submitted in this instance was fragmentary, and no heads 

 were included ; and the identification, therefore, is not absolute. 

 The general features agree closely with those accepted for 



H. diminuta save in the one fact that filaments are to be 

 recognized in the middle layer of the covering of the ova, 



