1094 MR. R. J. ORTLEPP ON THE 



four pairs of latei'al and circiimcloacal stalked papillae ; a large 

 pre-aual unpaired ventral papilla ; behind a,nus two pairs of 

 ventral papillae and a large unpaired papilla in front of them. 

 Spicules unequal, pointed and slightly bent. 



Tail of female long and attenuated. Yulva divides body into 

 ratio of 1:2; it is slightly raised and papillate. Eggs oval, 

 thick-shelled, containing partially developed embryos. 



Hosts: Arvicanthis abyssiniciis. Intestine. Fort Portal, 

 Africa. 

 Epimys xigandce {Miis ttgandce). Intestine. Fort 

 Portal, Africa. 

 (Compiled partly from Parona and Hall's (1916) descrip- 

 tions.) 



(62) Physaloptera sciuri Parona, 1898. 



Length of male 16 mm., of female 17-32 mm. ; breadth of 

 male "5 mm., of female "5-1 mm. 



Two large and semicircular lips, with foliaceous external 

 tooth. 



Caudal bursa of male large and lanceolate ; 4 pairs of lateral 

 stalked papillae situated circumcloa.cally; a large unpaired papilla 

 close behind the anus ; 2 pairs of ventral papillae situated 

 marginally and at about the middle of the tail ; a pair of small 

 ventral papillae near the tip of the tail. The bursa is ornamented 

 with numerous tubercles. The anus is large and ci]'cular, and 

 has a scalloped and raised edge. 



Tail of female obtuse. Vulva non-protuberant, and divides 

 the body more or less into the ratio of 1 : 2. Single uterine tube. 

 E"-gs small and spherical, with a diameter of 16-22 /a. 



Host : Sciurus melanogaster. Stomach and intestine. 

 Mentawei. 



As Hall (1916) has pointed out, Parona's observations with 

 regard to the uteri is probably incorrect ; in all other Physalo- 

 ptera in which the number of uteri has been determined they 

 are never less than two. 



(63) Physaloptera inermis v. Linstow, 1906. 



Length of male 21-5 mm. by 1-26 mm. thick; length of 

 female 51 mm. by 1-62 mm. thick. 



CEsophagus of male 1/3-8, of female 1/8-5, tail of male l/21st, 

 of female 1 /425th of body-length. 



Bursa with four stalked papillae on either side and four pairs 

 of equidistant ventral and post anal papilla;; the most a.nterior of 

 these are situated at about the middle of the tail. Longitudinal 

 striations on alae. 



Spicules 2-37 mm. long. 



Vulva divides body into ratio of 11 : 17. Eggs 47 x 26 jx. 



Host: Sciurus prevosti. Stomach. Koenigsbei-g. 



