MAMMALIAN CESTODES. 559 



For the latter reaches a length of 120 mm., and the ripe pro- 

 glotticis may be four times as long as broad. Moreover, the neck 

 of D. zschokkei " muss als sehr lang bezeichnet werden." It 

 appears also that my species has a much more pronounced 

 receptaculum, which is mentioned by Hungerbiihler as existing 

 in D. zschokkei, but is hardly indicated in his figure*. This 

 species occurs in Gynictis penicillata. Dipylld'mm triseriale of 

 Liihe also appears to differ — a species which occurs in the African 

 Civet cat f. For Liihe says of that species that the ripe eggs are 

 imbedded singly in the parenchyma, and makes no mention of 

 previously existing spaces, a state of aflairs which I have described 

 in my species. Moreover the genital pores of D. trisericde are 

 further back than in my species, and it is lai'ger in size. In 

 D. trisericde, moreover, the proglottids are described by Liihe 

 as being " ungefiihr quadratisch," which I presume means that 

 they do not overlap as in my species. 



A second species, Di2}ylklvu7n inonoojihorum, is also described by 

 Liihe from the same host, Avhich only measures 10 cm. in length 

 and therefore more nearly approaches the dimensions of D. dongo- 

 lense of the present paper. But in this species, as in D. trisericde, 

 the length of the ripe proglottids is much greater ; and further- 

 more, the two separate small rovmd ovaries (with the vagina to 

 the outside of each) are not what I have seen in D. clongolense. 



Diamare % has described, besides the well known D. caninum,, 

 D. echinorhynchoicles Sonsino, two species named by himself, 

 viz. D. trinchesii and D. pasqiicdii (botli from the common cat), 

 and two doubtful species, which are D. (?) genettce Gervais and 

 D. monticellii. 



Diplopylidium genettas, gen. et sp. n. 



I refer what I believe to be a new species of Tapeworm to the 

 new genus Dijjlojyyliclmm for reasons which I shall discuss after 

 setting forth the structure of this worm. The intestine of the 

 Dongolan Genet contained fewer specimens of this worm than of 

 the Bipyliclmm which has been described above. They were, 

 however, of about the same size, measuring up to 6 mm. or so 

 in length, and consisting of about 28 segments at most. 



The accompanying drawing (text-fig. 90) represents an average 

 sized example to which the above statements apply. The scolex 

 is as broad as the body which follows, and there is only a slight 

 increase up to the end of the body. The worm has thus a sturdy 

 form, and is so far much like the Dij^ylicliu.m which has just been 

 described. It agrees with it, moreover, in thickness, the trans- 

 verse sections being oval in outline and not much flattened from 

 above downwards. The scolex is furnished with an armed ros- 

 tellum, which is large in contrast to the comparatively small 



* Loc. cit. pi. xix. fi^. 18. 



t " Beitriige zur Helmintlienfanua des Bevberei," SB. Ak. wiss. Berlin, 1898 

 p. 626. 



X " II Geneve BipyJidiim" Atti R. Ace. Napoli (2) vi. 1894. 



