NATURAL HISTORY. 



Plate 



S26. Fig. lo. Cercar'ta lupus 

 II. Cercar'ta podura 



Genus Kolpoda. 

 Fig. 12. Kolpoda pyrum 



Genus Paramecium. 

 Fig. 13. Paramecium oviferum 

 , 14. Paramecium chryfolis 



15. Paramecium marginatus 



Genus Vibrio. 

 Fig. 16. Vibrio anguillula 



17. Vibrio glutinis, the fmaller figures denote the 



natural fize 

 18,18. Vibrio anfer, in two pofitions 



19. Vibrio olor 



20. Vibrio lunula 



21. 21. Vibrio paxiUfer, varioufly connefted 



Genus Leucophra. 

 Fig. 22. Leucophra cornuta 



Genus Enciielis. 



Fig. 23. EncheTts punaifera 



24. 24. Enchelis retrograda, two figures 



25. Enchelis tr uncus 



26. Enchelis caudata 



Genus Volvox. 

 Fig. 27. FolvoN globator 



Obf. All the Vermes 

 fcopic objecls 



afufo: 



na are micro - 



Addenda to the Zoology. 



337. Lettered Light, Luminous Animals 



Luminous Animals, vide article Light 

 Fig. I. Nereis nodiluca, difcovered by Vianelli, (nat. 

 fize) 



2. The fame, greatly magnified 



3. A luminous infeft, difcovered by Riville 



4. Cancer fulgens, difcovered by Sir Jofeph 



Banks, (natural fize) 



5. Limulus noUilucus, difcovered by Captain 



Horfburgh, greatly magnified 



6. Medufa pullucens, difcovered by Sir Jofeph 



Banks, fliewn lefs than the natural fize 



7. Pyrofoma atlanticum, lately difcovered by 



Peron 



8. Medufa lucida, of Dr. Macartney, the larg- 



eft he met with 



9. Beroe fulgens, of Dr. Macartney, the ufual 



fize 



10. Medufa fciniillans, of Dr. Macartney, natu- 



ral fize 



1 1. The fame, highly magnified 



12. A luminous Animalcule, difcovered by 



Mr. Forfter 



13. The fame, highly magnified 



J 4. An enlarged view of the inferior furface of 

 the abdomen in the Lampyris lucida, after 

 the integuments had been removed 



Plate 



227. Fig. 14. a.a.a. The three maffes of luminous fub- 

 ftance, which are applied to the three lad 

 rings of the abdomen 

 b.b.b. The arrangement of the cellular or 

 interftitial fubftance on the other abdomi- 

 nal rings, which give the pale colour to 

 the whole belly of the infeft 

 15. Diffedion of the common Glow-Worm, ex - 

 polmg the facs of luminous matter injitu, 

 on the laft ring of the belly, a. The 

 fac on one fide 

 nS. One of the facs of the Glow -Worm taken 

 -out and very highly m.agnified. a. The 

 external part of the fac, compofed of an 

 interweaving of a fpiral fibre, b. The 

 luminous fubftance feen at one end 



17. Elater nodilucus, with a portion of the 



fhell of the thorax removed to uncover 

 one of the organs of light, of which there 

 are two, one being fituated on each fide, 

 at the pofterior part of the thorax, a. 

 The yellow tranfparent fpot of the thorax. 

 b. The oval mafs of luminous fubftance 

 furrounded by an irradiation of the inter- 

 ftitial fubftance. c. The ends of the 

 mufcles which are on the infide of the 

 thorax 



18. The luminous apparatus of the elater noeh- 



lucus, confiderably magnified, a. The 

 radiated appearance of the interftitial fub- 

 ftance around the oval mafs of luminous 

 fubftance. b. The arrangement of that 

 fubftance when it paffes down between the 

 mulcles. c. The ends of the mufcles of 

 the back. d. The ftiell of the thorax 



19. Elator ignitus. a. The yellow part of the 



thorax, b. The fmall mafs of luminous 

 fubftance, feen on removal of the ftiell of 

 the thorax 

 Obf. The preceding objedls were thofe appointed by 

 Dr. Macartney for the explanation of his article 

 on Luminous Animals, which will be found 

 placed under the leading article. Light. 

 In addition to thofe, we have, ourfelves, conceived 

 the propriety of introducing another figure of 

 the Nereis genus, that of Vianelh being, confefT- 

 edly, very doubtful. This animal is, therefore, 

 not merely introduced by us as a fpecies highly 

 phofphorcfcent, under certain circumftances, in 

 common with moft others of its tribe, but in order 

 likewife to convey a more accurate idea of the 

 Nereis genus, than the figure copied from Via- 

 nelli will afford. The fpecies we have introduced, 

 is the Nereis casrulea of fome authors, fanguinea 

 of others ; and is, beyond any doubt, a genuine 

 Nereis of the Linman Syftem. 

 The figure by Vianelli, is contained in a fmall traft 

 written in the Italian language, entitled " Nuove 

 fcoperte intornole luci nolturne dell' acqua marina ;" 

 . and which, befides being moft evidently depidled 

 from a very mutilated objeft, is entirely different 

 from that included in the third volume of Amce- 

 nitates Academics, which Linnasus himfelf gave 

 very fhortly afterwards as the fame animal : and 

 even this latter, like that of Vianelli, if we mif- 

 take Dot, muft have been dehneated likewife from 



