54 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 8l 



By way of summary it may be noted that of three acanthocephalids 

 parasitic in mammals, all develop in insects, all with Coleoptera and 

 one with Orthoptera also as intermediate hosts ; the one acanthocepha- 

 lid habitually parasitic in water birds uses crustaceans as intermediate 

 hosts ; and that of five acanthocephalids parasitic in fish and amphib- 

 ians, four use crustaceans as intermediate hosts, these being amphi- 

 pods in two cases, isopods in one case, and both amphipods and isopods 

 in one case. In the case of one acanthocephalid in fish, the Neurop- 

 tera serve as hosts. Insects are apparently of major importance for 

 acanthocephalids of mammals and crustaceans for acanthocephalids of 

 fish. 



In the foregoing lists of parasites arranged by orders and families, 

 the names given for the arthropod hosts are those under which they 

 are reported in the literature and no attempt is made in these lists to 

 eliminate synonyms for the reason already given that it is easier to 

 trace these references in the literature under the names quoted. In 

 the following lists arranged on the basis of intermediate hosts, syn- 

 onyms are cross-referenced to the names accepted by the authorities 

 already mentioned in the first part of the paper. 



ARTHROPOD HOSTS OF HELMINTHS, ARRANGED BY HOST 



GROUPS 



INSECTA 



ANOPLEITRA 



Haematopinus pilifenis. See Linog- 



nathiis piliferus. 

 Lhiognathus piliferus 

 Dipetalonema recondittim 



DERMAPTERA 



Anisolabis annulipes 

 Hymenolepis diminuta 

 Hymenolcpis microstoma 



EPHEMERIDA 



Blasturus acpidus. See LeptopJilebia 



cupida. 

 CI aeon dlpterum 



? Opisthioglyphe endoloba 

 Ephemera danica 



Stephanophiala farionis 

 Ephemera vulgata 



Allocreadiuni isoporum 



Opisthioglyphe endoloba 



Spiroptera ephemeridarum 



Ephemerid 



Lecithodendrimn lagena 



Cercaria secimda 

 Hexagenia sp. 



Crcpidostomum cornutum 



Stephanophiala farionis 

 Leptophlebia cupida 



Allocreadiuni commune 

 Ollgoneuria rhenana 



Spiroptera ephemeridarum 



COLEOPTERA 



Ablattaria laevigata 



Weinlandia uncinata 

 Akis goryi 



Spirura gastrophila 



Spirocerca sanguinolenta 

 Akis spinosa 



Hymenolepis diminuta 

 Aphodius castaneus. See Aphodius 



rufus castaneus. 

 Aphodius coloradensis 



Gongylonema scutatum 



