308 PARASITIC WORMS. 



This species, which is common in rats and mice in many 

 parts of the world, is represented b}' a number of specimens 

 from the stomach of Rattus sabanus. Locahty : Mt. Dulit. 



Subfamily Arddenninae. 



Arduenna Eailliet and Henry, 1911. 



Arduenna dentata v. Linst., 1904. 



Spiroptera de7\tata von Linstow, 1904, p. 282, pi. i, figs. 5--7. 

 Arduenna dentata Eailliet and Henry, 1911, p. 696. 



The collection contains several female specimens which are 

 referred to this species, from the stomach of .S'^.s- barhatits at 

 Mt. Miirud. Unfortunately, there is no male, and the deter- 

 mination cannot be confirmed by reference to the important 

 characters of the male sex. A. dentata was originally recorded 

 from Sus cristatus in Ceylon, and specimens found in domestic 

 pigs in Cochin-China have been referred to the same species. 



Streptopharagus Blanc, 1912. 

 StreptopharactUS pigmentatus v. Linst., 1897. 



Spiroptera pigmentata von Linstow, 1897, p. 604, pi. xxviii, figs. 1--5. 

 Streptopharagus pigmentatus Eailliet and Henry, 1918, p 84. 

 Host : Hylobates midleri. Locality : Mt. Murud. 



The specimens, according to the label, were found in the 

 abdominal cavity of the host. It is probable, however, that 

 they had wandered into that position from the stomach after 

 the animal's death. The species was recorded by von Linstow 

 from Ccrcopithccus albogularis (an African monkey), and by 

 Eailliet and Henry from Macaca sp. from the Belgian Congo, 

 but does not seem to have been recorded from Gibbons, and 

 its occurrence in Borneo is interesting. 



The present material, reasonable allowance being made for 

 variation in measurements, agrees well, on the whole, with 

 the description given by von Linstow. The masses of "pig- 

 ment" mentioned by him as being abundant in the cuticle are 

 not visible in these specimens, and it seems probable that they 

 were artifacts caused by some reagent in which von Linstow 's 



