332 CLASSIFICATON OP ANIMALS. 



Order 3. The lepidopterous have four wings, all of them imbri- 

 cated with scales. This order contains three genera, viz. papilio, 

 sphinx, phalsena. 



Order 4. The neuropterous have four wings, interwoven with 

 veins, like a piece of net-work, and no sting in the anus. This 

 order includes seven genera, viz. libella, ephemera, hemerobius, 

 myrmelion, phryganea, panorpa, rophidia. 



Order 5. The hymenopterous have the same characters with the 

 former, only the anus is armed with a sting. But this mark is pe- 

 culiar to the females and neuters ; for the males have no sting. 

 This order comprehends fifteen genera, viz. cynips, tentredo, sirex, 

 ichneumon, syphex, scolia, thynuus, leucospis, tiphia, chalsis, chrysis, 

 vespa, apis, formica, mutilla. 



Order 6. The dipterous have two wings, and two clavated hal- 

 teres, or balances, behind each wing. This order contains twelve 

 genera, viz. diopsis, tipula, musca, tabanus, empis, conops, oestrus, 

 asilus, stomoxys, culex, bombylius, hippobosca. 



Order 7. The apterous have no wings. This order contains fif- 

 teen genera, viz. lepisma, podura, termes, pediculus, pulex, acarus, 

 hydrachna, aranea, phalangium, scorpio, cancer, monoculus, oniscus, 

 scolopendra, julus. 



The sixth class, Vermes, is divided into five orders. 



Order 1. The intestinal are the most simple animals, being per- 

 fectly naked, and without limbs of any kind. This order contains 

 twenty-one genera, viz. ascaris, trichocephalus, uncinaria, filaria, 

 scolex, ligula, lingratula, strongylus,echinorhynchus, hasruca, cucul- 

 lanus, caryophyllseus, fasciola, taenia, furia, gordius, hirudo, lumbri. 

 cus, sipunculus, planaria. 



Order 2. The molluscous are likewise simple naked animals, 

 without any shell ; but they are brachiated, or furnished with a 

 kind of limbs. This order comprehends thirty-one genera, viz. 

 actinia, clava, mammaria, pedicellaria, aseidia, salpa, dagysia, pte- 

 rotrachea, limax, aplysia, doris, tethys, holothuria, terebella, triton, 

 sepia, clio, lobaria, lernae, scyllaea, glaucus, aphrodita, amphitrite, 

 spio, nereis, nais, physsophora, medusa, lucernaria, asterias, echinus. 



Order 3. The testaceous have the same characters with those of 

 Order 2. but are covered with a shell. This order includes thirty- 

 six genera, viz. chiton, lepas, phloas, mya, solen, tellina, cardium, 

 mactra, donax, venus, spondylus, chama, area, ostrea, anomia, my- 



