﻿MR. J. MIERS ON THE LECYTHIDACE^. 239 



.terzonal band 8 lines high ; the operculum nearly 2 in. in diam. and 7 lines high. 



There is another specimen 2f in. m diam., hoth without seeds : the reference on the 

 ticket to Spruce's specimen of Swartzia argentea miist he a mistake. 



The pyxidium (Plate LVIII. fig. 12), from its erect interzonary hand, hears a re- 

 semblance to that of Chyh'oma cincturata, hut is of thinner texture, its operculum is 

 Tcry depressed at first, then gradually rounded in an ogee-form curve. 



■ 



13. Chytroma monosperma, nob. : Lecythis monosperma, Berg in Mart. Fl. Br. I. c. 

 p. 485, tab. 67. fig. 2: planta ignota: pyxidio subparvo, ovali, imo obtuse rotun- 

 datOj pauUo sub apicem zona calycari e sepalis 6 acutis depressis linea nexis cincto ; 

 vitta interzonali hreviuscula, convexa, diametri tertiam partem alta ; zona superiore 

 quam inferior minore, orbiculari, integra; operculo ignoto; pericarpio crassius- 

 culo, spongioso-lignoso, granulis parvis flavidis irrorato, vitta Isevi, abortu 1-locularI 

 et monospermo, loculis 3 septisque membranaceis ad latus simul detrusis, et ovulis 

 basalibus abortivis instructis; semine loculum fertilem implente, oblongo-ovato, 

 testa duriuscula, castanea, raphe ramisque subplanis ah hilo basali adscendentibus 

 notata. In Brasilia, prov. Para [non vidi). 



The pyxidium (Plate LVIII. fig. 10) is remarkable for its egg-like shape : it is 21 lines 

 long, without the operculum, 16 lines broad in the middle ; the calycary zone is 16 lines 

 above the base, 15 lines in diam. ; the interzonal band is 4 lines high, the npper zone 

 U hnes across ; the pericarp apparently is 2 lines thick ; the seed is erect, attached to 

 tlie base of the cell, 14 lines long, 9 lines broad, covered by a testa resembling that 

 of other species of Chytroma, and very different from that of an Uschweilera. 



J 



4. Chytroma basilaeis, nob. : planta ignota : pyxidio pallide brunneo, semigloboso, 

 subquadrato, imo depresso, convexo, corrugulatim scrohiculato, paullo supra basin 

 zona calycari anguste laminiformi obsolete 6-lohata cincto ; vitta interzonali paullo 

 elevata, extrorsum valde acclivi; zona superiore quadratim orbiculari, in labium 

 annulare prominens expansa; operculo ista pauUo angustiore, altissimo, semi- 

 globoso, apice subito umbonato, extus grosse tuberculato-rUgoso, crassiusculo, intus 

 concavo, vestigiis septorum 4 signato ; velario nuUo ; pericarpio parte inferiore 

 epresso-pateriformi, crassiusculo, extus grosse rugoso, obsolete 4-loculari, 8-spermo. 

 ^ ^ Guiana Brit. : v. s: in Mus. Keic, Demerara {Farker). 

 ^Jhis pyxidium ^pi^^^ LVIII. fig. 13) is of a very unusual form, extremely different 

 theV ''^^''^^ ' '* '^ ^^ '''• ^'^^ ' *^^^ calycary zone is IJ m. in diam., only 2 lines above 

 ^hapeT^ * ^-^^^ interzonal band, extrorsely cup^-shaped, is 3 lines high ; the annular lip- 

 1| in , ^'^J^'^^^^S '^ina of the upper zone is 2^ in. in diam., the opercular mouth being- 

 'lase \fl ' *^^ ^P^^culum is in the form of a lofty dome, is somewhat 4.gonous at the 

 ^issepi^'^'V^ '' ^ '''• ^''''^'' *^^ ^^"^^^ --^ ^ '^''' ^^^^'^ *^^ intermediate lines of the 

 of the inf 'i '* '' ^^^""^ ^1 ^i^es high, 6 lines deep inside, and 2| fines thick ; the depth 



internal 



cavity of the lower portion is 2 lines 



^- Chyteoma Idatimok, nob. : LecvtMs Idatimon, Aubl. PI Gu. ii. 721, tab. 289 



2i2 



