Change of Plumage in the Guillemot, 607 



acutissimis vestiti. Folia natantia, recentius aperta diametro 

 3 — 4f pedali, seniora saspe 6 pedes lata, supra concava, 

 margine teneriore piano horizontali, centro infra aquarum 

 superficiem depresso ; pagina superior bullis innumeris, ju- 

 glandis magnitudine obsessa, inferior ob nervos et processus 

 membranaceos reticulatos transversos, in cellulas quadrangu- 

 lares, pollicis cubici magnitudinem aequantes, divisa. Nervi 

 radiati dichotomi, ancipites, valde prominentes, processibus 

 reticulatis membranaceis invicem juncti. Substantia folii 

 tenerior, colore supra pallide viridi Pistias, subtus lurido. 

 Flos speciosissimus, apertus diametro pollicum Anglicorum 

 novem ad decern, odore debili haud ingrato. Calyx cam- 

 panulatus, limbo lato 4-fido, aculeatissimus, coriaceus, cine- 

 reus. Petala seriebus quinque eadem altitudine cum calycis 

 lobis inserta, oblonga, exteriora nivea, interiora versicolora, 

 primum sanguinea, dein violaceo-purpurea. Stamina 40 — 50, 

 ante petala inserta, in strobilum valde depressum conniventia. 

 Filamenta lanceolata, coriacea, acuta, 18 lin. longa, exterius 

 saepius sterilibus. Antherae cum filamentis arete connataa, 

 iisque infra apicem adnatae, biloculares, loculis valde sejunctis, 

 lateralibus, ab apice inde dehiscentibus. Ovarium cum calyce 

 connatum, toro concavo, multoloculare. Stylus brevis, coni- 

 cus, crassus, stigma unicum indivisum radiatum. Bacca im- 

 matura fere magnitudine pomi majoris, multilocularis, loculis 

 5 — 6 spermis, interstitiis fungosis. Semina immatura pisi 

 magnitudine, dura, nigra, parietibus loculorum adfixa. Em- 

 bryo obovatus, basilari-lateralis. — Planta congenerum facile 

 speciosissima a Brasiliensibus vocatur Mururu, floribus 

 splendidissimis ornatur tempore pluviarum a mense Januario 

 inde ; fructus qui aurantii dicuntur tardius perficit, maturi 

 quidem ad fundum aquarum usque descendunt, ubi semina 

 emittunt. Crescit in aquis profundis sed mansionibus (man- 

 suetioribus ?) fluminis Amazonarum, versus confluentem 

 TefFe." 



Plants of the genus Euryale had, till now, only been found 

 in the East Indies, according to De Candolle. — W, Weissen- 

 born, Weimar, Oct, 20. 1837. 



Change of Plumage in the Guillemot, — Having been absent 

 from Plymouth last month, I did not obtain your September 

 Number until a few days since, in which I notice Mr. Blyth's 

 comment on my observations respecting the greater and lesser, 

 or old and young, guillemot. Your able correspondent will 

 observe that, while stating the apparent anomaly regarding 

 these birds, I have not presumed to impugn the authority of 

 Temminck and others by making them distinct in my list. 



