60 LIOHENES ANTILLARUAI A W. R. ELLIOTT COLLECTI. 



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 Hibemira, 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 passing notice is the use of the words 

 "province" and "district." Babington, following Watson, called 

 the twelve Irish botanical divisions " provinces " ; the authors of 

 CyhcJe Hihp.rnica 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. AV. 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 COLLECTL 

 ExpoNiT Edv. a. Wainio. 



(Continued from p. 36.) 



Trib. 4. Pertusaeie^, 

 1. Pertusaria. 



1. P. VARIOLOSA (Krempelh.) Wain. i\i\\(\. 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— , CaCl^O.,— , KHO (CaCI^Oo)— . Pseudostromata KHO 

 lutesceutia, CaCloO„ — , KHO (CaOl^Op) — . Diversa est P, vario- 

 losa Miill. Arg. Lich. Exot. ii. (1893), 126. 



2. P. antillarum Wain., sp. n. Thallus sat tenuis, continuus, 

 leviter verruculoso-innequalis, albidus aut partim stramineus vel 

 glaucescenti-stramineus, sorediis et isidiis destitutus, KHO leviter 

 lutescens, CaClo02 non reagens, sedhis reagentiis unitis aurantiaco- 

 fulvescens. Pseudostromata circ. 0-5-0-7 (-1) millim. lata, parce 

 confluentia et -2 millim. longa, numerosissima et crebra, hemi- 

 sphferica 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 hist British vice- 

 province (Shethmd), rather than XIX. to XXX. 



