Kntozthi from t/itf Murman Coast. T) 1 1 



nnnow iniiMIc portion ot" the ovniy is s\ rather hirge shell- 

 jlhuid. Just ill front of tlie sljell-glinid is a. .small rouiided 

 rtcrptaciiluin s«'inini.-i. 



There is no delinite uterus in tlie <^riivifl se^nnents, the ova 

 beiii^' scntteied ."iiii/ly in tlie parenchyme. The onchospheres 

 measure about 25 fi in diameter. 



This species beais an exceedingly close resemblance to 

 Cfioanotiniia j)oro.<'a (\{m\.) in many respects, but the hooks 

 are of a slii^htly diffeient .slmpe, the cinius-sac is niiich 

 snialler, nii 1 the uti riis is not sac-like. 'J'he sniall number (»f 

 segments is also a leature not characteristic of Clioa)i<>t<i n'ui. 



Hyinenolepinidae. 

 Ilymenolepis micrusoma (Crepl.), Colin, 1901 (?). 



Host : (JEdenila nicjra (common scoter). Ynk;in-ki, 

 ^. vi. 11)17. 



A numher of fragments, unfortunately without scolices, 

 which probably belong to this species, were the only parasites 

 fuuiul in this bird. 



Ili/menolepis spp. A and B. 



Host: Clungula hi/etmilis \_ = ITareJda glacialis] (!oik'- 

 tailed duck). Yiikanski, 8. vi. 1917. 



The collection includes portions of about three specimens of 

 species of Ilymenolepis fium this bird. Aj)paieiitly at least 

 two species are rejtresented, but the material is too trag- 

 menlaiy for piecise determination. One specimen has a 

 very small scolex, with a little button-like rostellum, appa- 

 rently unainied. The scolex measures 0*096 mm. across 

 and the suckers only 0*03 mm. in diameter. This may be 

 called species A. In the mature segmonts the three testes 

 are arranged in a transverse row, and the fan-shaped ovary 

 lies between the middle and aporal testes. The entire 

 9])»ciinen is about 4^, cm. in length, and the maximum width 

 is about 1*5 mm. 



Another specimen, which nmy be called species B, has a 

 larger scolex wilh a more typical io<teIlum, which was appa- 

 rently pn^vided with hooks; these, however, have all bteu 

 lost. The ovary, in this case, lies between the middle ttttia 

 and that on the pore side. 



