66 LICHENES ANTILLARUM A W. R. ELLIOTT OOLLEOTI. Botanists will form their own opinions on this point ; for my part I prefer to follow the lead set by the careful and able authors of Cybele Hibeniica, who numbered the Irish districts 1 to 12, not XIX. to XXX.; and I have numbered the counties and vice- counties of Ireland 1 to 10. . . ■, ^ ,^ -, Another point requiring a passmg notice is the use of the words
- province" and *' district." Babington, following Watson, called
the twelve Irish botanical divisions provinces"; the authors of Cybele Hihernica used the term "district" instead; M'Nab proposed to return to tho word "province.'"^' Considering that Ireland is divided geographically into four provinces, — Ulster, Munster, Leinster, and Connaught,— and that in Ireland the term "pro- vince " is invariably used in this sense only, I believe its use to signify the twelve botanical divisions of the country would lead to confusion; and I follow Moore and More, who (probably on the same consideration) called them " districts." In conclusion, I wish to acknowledge the ready and willing assistance which I received from many Irish botanists in the inquiries made for the purposes of the present paper ; and I would specially offer my thanks to Messrs. N. Colgan, M.R.I. A., R. A. Phillips, R. W. Scully, F.L.S., S. A. Stewart, F.B.S.E., and Rev. C. H. Waddell, B.D., for information and for useful criticism given in correspondence or in conversation. LICHENES ANTILLARUM A W. R. ELLIOTT COLLECTI. ExpoNiT Edv. a. Wainio. (Continued from p. 36.) Trib. 4. Pertusarie-e. 1. Pertusaria. 1. P. VARIOLOSA (Krempelh.) Wain. :&tud. Bres. i. (1890), 106. Ad corticem arborum in Roseau Valley in Dominica (n. 116) et in Richmond Valley in St. Vincent (n. 241). Sine sporis. Thallus KHO— , CaClaO^— , KHO (CaCl^OJ— . Pseudostromata KHO lutescentia, CaClgOg — , KHO (CaClgOg) — . Di versa est F. vario- losa Miill. Arg. Lich. Exot. ii. (1893), 126. 2. P. antillarum Wain., sp. n. Thallus sat tenuis, continuus, leviter verruculoso-insequalis, albidus aut partim stramineus vel glaucescenti-stramineus, sorediis et isidiis destitutus, KHO leviter lutescens, CaClgOg non reagens, sed his reagentiis unitis aurantiaco- fulvescens. Pseudostromata circ. 0- 5-0*7 (-1) millim. lata, parce confluentia et -2 millim. longa, numerosissima et crebra, hemi- sphaerica aut demum subgloboso-depressa, apice deplanata aut
- Babington's Irish "provinces" correspond in size and importance to
•Watson's " vice-provinces," rather than to his "provinces," and might preferably have been numbered XXXIX. to I., in continuation of the last British vice- province (Shetland), rather than XIX, to XXX,
