PYCNIDES OF CRUSTACEOUS LICHENS. 307 
Fig. 15. L. parasema, var. enteroleuca, Ach: a, por- 
tion of thallus, showing apothecia and 
spermogones; 4, portion of another 
thallus, magnified, showing an apothe- 
. eium and spermogones; c, section of 
thallus, showing ditto; d, spermatia. 
Fig. 16. Ditto, var. latypea, Ach., Otago, New 
Zealand: a, portion of thallus, show- 
ing apothecia and spermogones: 3, sec- 
tion of thallus showing ditto. (Vide 
author's paper on * New Zealand Li- 
chens," in Trans. Linnean Society, 
vol. xxv. p. 550, pl. Ixiii. f. 23.) 
Fig. 17. Ditto, var. eleochroma, Ach., Bally- 
omartin: spermatia. 
Fig. 18. Ditto, var. eleochroma, Leighton's Exs. 
No. 126: a, portion of thallus, show- 
ing apothecia and spermogones; 5, ste- 
rigmata and spermatia. 
Fig. 19. Ditto, var. eleochroma, Hepp's Exs. No.3: 
sterigmata and spermatia. 
Fig. 20. ora hi var. eleochroma, Killarney : = 
mati 
Fig. 21. L. coniops, Ach., Yorkshire: a, portions 
of thallus variously magnified, show- 
ing apothecia and spermogones; à, sec- 
tion of thallus showing ditto; c, sper- 
matia. 
Fig. 22. L. pulvinata, Tayl, Brandon Mountain, 
Kerry: a, thalli bearing apothecia and 
spermogones, or the latter alone; 
. 5, portion of thallus magnified, show- 
ing apothecia and spermogones; c, sec- 
tion of thallus, showing apothecia and 
spermogones ; d, sterigmata and sper- 
matia. 
Fig. 23. L. conglomerata, Ach., Kew herb.: ste- 
rigmata and spermatia. 
Fig. 24. L. conglomerata, Scherer’s Exs, No. 169 : 
sterigmata and spermatia. 
Fig. 25. L.albo-atra, Hffm., Yester House: a, por- 
tions of thalli, showing apothecia, sper- 
mogones, and proven b, section m 
thallus,showi C t 
spermatia ; d, besidin lan sty osporen: 
Fig. 26. Ditto, Dunscombes Wood: a, section of 
a spermogone ; 4, sterigmata and sper- 
matia. 
Fig. 27. Ditto, Glen Nevis : 
matia. 
Fig. 28. Ditto, Hepp's Exs. No. 29: ditto. 
Fig. 29. Ditto, Leighton's Exs., No. 64: 
matia. 
Fig. 30. Ditto, var. epipolia, Ach., Scherer’s Exs. 
No. 230: sterigmata and spermatia. 
Fig. 31. L. petrea, Flot., var. Œderi, Ach., Leigh- 
ton's Exs. No. 187: ditto. 
Fig. 32. L. Taylori, Salw., Dunkerron : ditto. 
Fig. 33. L. albo-atra, Hffm., Leighton’s Exs. 
No. 241: ditto. 
coarctata, Ach., Leighton's Exs. 
No. 149: ditto. 
Fig. 35. L. protuberans, Ach., Scherer’s Exs. 
No. 203; ditto. 
Fig. 36. Lecidea Ehrhartiana, Ach., Bury : sper- 
matia. 
Fig. 37. Ditto, Scherer’s Exs. No. 192: ditto. 
(Vide also Plate XII. figs. 26, 27). 
Fig. 38. Lecidea anomala, Ach., lreland: sper- 
matia. 
Fig. 39. L. dryina, Ach., Hopton, No. 1: ditto. 
Fig. 40. Ditto, Hopton, No. 2: ditto. 
Fig. 41. Ditto, Relhan, No. 3: ditto. 
Fig. 42. L. minuta, Sch., Craig Choinich : a, some 
of the spermogones isolated and mag- 
nified; 5, sterigmata and spermatia. 
sterigmata and sper- 
sper- 
Fig. 34. L. 
Puate XII. 
Also illustrative of the genus Lecidea, Ach. 
Fig. 1. L. disciformis, Fr., Glen Callater : a, por- 
tion of thallus, showing apothecia and 
spermogones; b, section of thallus, 
showing ditto ; c, sterigmata and sper- 
matia. « 
Fig. 2. L.disciformis, Fort Augustus: sterigmata 
and spermatia. 
Fig. 3. Ditto, Leighton's Exs. No. 180: ditto. 
Fig. 4. Ditto, Killarney : ditto. 
Fig. 5. Ditto, var. saprophila, Ach., Hepp's Exs. 
