96 Mr. C. C. Babington on some British species o/CEnauthe. 



genus contains but a single species. In the present state of our 

 knowledge the group may be thus arranged : — 



Class AVES. 

 Order IV. Rasores, Vigors. 

 Family IV. Struthionid^. 



1 . Genus Struthio, Linnaeus. (Type of the group), Ostrich of South 

 Africa : possessing two toes. 



2. Genus CasMari«.s, Brisson. Ca^sou-ary of the Indian Archipelago : 

 three toes. 



3. Genus Dromiceitts, Vieillot. Emeu of N. S. Wales : three toes. 



4. Rhea, VieiU. Nandu of Straits of Magellan : three toes. 



5. Didus, Linn. Dodo, formerly an inhabitant of the Isles of 



Mauritius and Bourbon : three toes: extinct! 



6. Genus Apteryx, Shaw. Kiwi of New Zealand : three toes and a 

 rudimentary one. 



7. ? ?* Moa of New Zealand ; three toes : sup- 

 posed to be extinct. 



XIII. — On some British species o/(Euantlie. By Charles 

 C. Babixgtox, M.A., F.L.S., F.G.S. &c.t 

 My friend ]\Ir. Ball having most kindly allowed me to read his 

 paper upon CEnanthe (p. 4 of the present volume) before its pub- 

 lication^ I have availed myself of his permission, and prepared 

 the present memoir upon the same subject, which, it will be seen, 

 is one which presents very considerable difficulty. 



To my valued friend the Rev. W. L. P. Garnons I am indebted 

 for specimens of CEnanthe from " a marsh between Weymouth and 

 Portland Island " which agree veiy well ^\dth ]\Ir. Ball's descrip- 

 tion of CE. jjimpineUoides, but want the radical leaves. All the 

 stem leaves that remain (the lowest alone being wanting) have 

 linear simple pinnules. The diachenia are unripe, as is also un- 

 fortunately the case in all my foreign specimens of CE. pimpinel- 

 loides ; but still they show a considerable difference of form from 

 those of CE. Lachenalii, narrowing in a slight degree from the 

 summit downwards, and being furnished at the base (as far as I 

 can judge from unripe dried specimens) ^vith the fleshy prominent 

 ring found in the true CE. pimphielloides ; they are crowned with 

 the erect persistent limb of the calyx, and about equal the length 

 of the rigid, slightly divergent styles. The leaflets of the involucels 

 differ slightly in form and proportions, being linear-subulate or 



* Prof. Owen's ob^-ervations on this subject are given at p. 444, vol. xii., 

 and p. 59, vol. xiv. of this Journal ; the generic name of Dinornis has been 

 as.-igiied bj- Prof. Owen to this monster bird, and no less than five species 

 distinguished. — Ed. 



f Read before the Botanical Society of Edinburgh, Dtli May, 1844. 



