Parasitic Trematodes and Nematodes 

 collected by tlie expedition of Prof. 

 V. Dogiel and I. Sol^olov in Britisli 



East Africa. 



K, I. Scrjabin. 



In November of 1914 I was honoured by the proposal of 

 Professor V. Dogiel to take part in the treatment of the col- 

 lection of Trematodes and parasitic Nematodes taken by the 

 expedition of V. Dogiel and I. Sokolov during the summer 

 of 1914 in British East Africa. 



The treatment of this collection, consisting of 10 species 

 of Trematodes and 26 species of parasitic Nematodes taken 

 from 38 different hosts, promised to give interesting results, 

 as the material w^as collected in a country vv^hich was hardly 

 at all studied from the helmintho-faunistic point of view. 



A. Trematodes. 



The Trematodes in the collection of prof. V. Dogiel and 

 I. Sokolov belonged to 10 species taken from 8 different 

 hosts. 



These species represented 9 genera and 7 families. Amongst 

 the hosts of the Trematodes there were representatives of all 

 the classes of vertebrates, with the exception of Alammaha. 



Three specimens of this collection are described by me as 

 new species, one of them constituting a type of a new genus: 

 LaurerieUa lateriporus nov. gen. nova spec, Mesocoelium 

 sokolowi n. sp. and Frostliogonimus dogieli nov. sp. 



The most interesting parasite of the collection of Tremato- 

 des is, of course, the new representative of the fam. Allo- 

 cr e a diid a e—I/awme/^« lateriporus n. gen. n. sp. (from 

 the intestine of a chamaeleo); the Laurer's canal of this 

 parasite is exceedingly long and opens not on the dorsal sur- 



