322 THE HISTORY AND SCOPE OF ZOOLOGY IX 



hyx, Leptura^ Cantharis, Elater, Cicindela, Bu- 

 prestis, Di/tiscus, Carabus, Necydalis, Forjicula. 

 Order 2. Hemiptera. 



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

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

 Coccus, Thrips. 

 „ 3. Lepidoptera. 



Genera : Papilio, Sphinx, Phcdcena. 

 „ 4. Neuroptera. 



Genera : Lihellula, Ephemera, Myrmeleon, Phry- 

 ganea, Hemerobius, Panorpa, Raphidia. ' 

 „ 5. Hymenoptera. 



Genera : Cynips, Tenthredo, Sirex, Ichneumon, 

 Sphex, Chrysis, Vesp)a, Apis, Formica, Mutilla. 

 „ 6. Diptera. 



Genera : (Estrus, Tipida, Musca, Tcdxinus, Cidex, 

 Empis, Conops, Asilus, Bombylius, Hippohosca. 

 ,, 7. Aptera. 



Genera : {a) Pedibus sex ; capite a tliorace dis- 

 crete : Lepisma, Podura, Termes, Pedicu- 

 lus, Pulex. 

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

 Acarus, Phalangium, Aranea, Scorpio, 

 Cancer, Monoculus, Oniscus. 

 (c) Pedibus pluribus ; capite a thorace discrete : 

 Scolopendra, Julus. 



Class VI. Vermes. 



Order 1. Intestina. 



Genera : («) 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. 

 (6) Ore antico ; corpore pertuso laterali fora- 

 minulo : Limax, Aplysia, Doris, Tethis. 



(c) Ore antico; corpore tentaculis antice cincto: 



Holothuria, TerebeUa. 



(d) Ore antico ; corpore brachiato : Triton, 



Sepia, Clio, Lerncea, Scyllcea. 



