322 THE HISTORY AND SCOPE OF ZOOLOGY IX 



byx, Leptura, Cantharis, Mater, Cicindela, Bu- 

 prestis, Dytiscus, Carabus, Necydalis, Forficula. 

 Order 2. Hemiptera. 



Genera : Blatta, Mantis, Gryllus, Fulgora, Ci- 

 cada, Notonecta, Nepa, Cimex, Aphis, Chermes, 

 Coccus, Thrips. 

 3. Lepidoptera. 



Genera : Papilio, Sphinx, Phalcena. 

 4. Neuroptera. 



Genera : Libellula, Ephemera, Myrmeleon, Phry- 



ganea, Hemerobius, Panorpa, JRaphidia. 

 5. Hymenoptera. 



Genera : Cynips, Tenthredo, Sirex, Ichneumon, 

 Sphex, Chrysis, Vespa, Apis, Formica, Mutilla. 

 6. Diptera. 



Genera : CEstrus, Tipula, Musca, Tabanus, Culex, 

 Empis, Conops, Asilus, Bombylius, Hippobosca. 

 7. Aptera. 



Genera : (a) Pedibus sex ; capite a thorace dis- 

 crete : Lepisma, Podura, Termes, Pedicu- 

 lus, Pulex. 



(b) Pedibus 8-14 ; capite thoraceque unitis : 



Acarus, Phalangium, Aranea, Scorpio, 

 Cancer, Monoculus, Oniscus. 



(c) Pedibus pluribus ; capite a thorace discrete : 



Scolopendra, Julus. 



Class VI. VEKMES. 



Order 1. Intestina. 



Genera : (a) Pertusa laterali poro : Lumbricus, 



Sipunculus, Fasciola. 

 (b) Imperforata : poro laterali nullo : Gordius, 



Ascaris, Hirudo, Myxine. 

 2. Mollusca. 



Genera : (a) Ore supero ; basi se affigens : Ac- 

 tinia, Ascidia. 



(b) Ore antico; corpore pertuso laterali fora- 



minulo : Limax, Aplysia, Doris, Tethis. 



(c) Ore antico; corpore tentaculis antice cincto: 



Holothuria, Terebella. 



(d) Ore antico ; corpore brachiato : Triton, 



Sepia, Clio, Lerncea, Scyllcea. 



