In regard to the shrews, many species of fluke have been described as occupying the intestines. In _Sorex araneus_ and _S. leucodon_, the _Distoma migrans_; in _S. constrictus_, the _D. exasperatum_; in _S. tetragonurus_, the _D. corrugatum_ and _D. rubens_; the last-named fluke, with two others (_D. instabile_ and _D. truncatum_), being also found in Daubenton’s shrew. The tapeworms are numerous--_Tænia neglecta_, _T. furcata_, _T. uncinata_, _T. pistillum_, _T. tiara_, _T. scalaris_, _T. scutigera_. With the exception of the last named, all these forms occur in the common shrew. According to the investigations of M. Villot the cysticercal stage of _T. pistillum_ is to be found in the glow-worm (_Glomeris_). This scolex (_Staphylocystis micracanthus_, Villot) multiplies by proliferation, and in this way the swallowing of a single intermediate host may result in the formation of a hundred or more tapeworms. Another species of Staphylocystis (_S. biliarius_) is considered by Villot to be the larval source of _T. scutigera_ and _T. scalaris_, which are perhaps identical species. A small Echinorhynchus (_E. appendiculatus_), found in the intestines and also encysted in the mesentery of the shrew, in like manner becomes transferred to the stomach of the fox. The nematodes of shrews possess little interest. In the common shrew the only species known are _Trichosoma splenaceum_ and an immature worm, whilst in _Sorex tetragonurus_ we have _T. incrassatum_, occupying the tunica vaginalis of the testis, and _Strongylus depressus_ in the intestines. Not many other insectivora appear to have been studied in relation to their internal parasites. A larval cestode has been noticed in the Russian musk rat (_Mygale_), and also a tapeworm (_Tænia sphærocephala_) in the golden mole (_Chrysochloris_). Several flukes and a tapeworm have been found in the water-shrews (_Sorex fodiens_), but, so far as I am aware, nothing has been done in connection with the parasites of the _Macroscelidinæ_, of the Banxrangs (_Tupainæ_), or of the Tanecs (_Centites_) and their allies. The entozoa of the star-nosed and shrew moles of North America (_Condylura_ and _Scalops_) also deserve attention. From the last-named genus (_S. canadensis_) Prof. Leidy obtained a single male spiroptera. It occupied the stomach and was only half an inch in length.