272 Linnean Society. 
’ 16. Preromatus AmyntorG, aureo-viridis, capite viridi, abdomine cy- 
aneo-viridi fasciis cupreis, antennis ferrugineis, pedibus flavis; femo- 
ribus viridibus, alis limpidis.—Long. corp. lin. 1 ; alar. lin. 13. 
Hab. , ex Muszeo Rev. G. T. Rudd. 
17. Preromatus Navusowus ®@, viridis, abdominis disco cupreo, antennis 
piceis, pedibus flavis ; femoribus viridibus, alis limpidis.—Long. corp. 
lin. 1—14; alar. lin. 13—2, 
Hab. , ex Museo Rev. G. T. Rudd. 
18. Preromatus Acuiaus Z, viridis, abdomine cupreo basi viridi, antennis 
piceis, pedibus fulvis; femoribus fusco cinctis, alis limpidis.—Long. 
corp. lin, 3; alar. lin. 1. 
Hab. prope Londinum, mense Julio. 
19. Preromatus Urco @, cyaneo-viridis, abdominis segmentis basi pur- 
pureis, antennis piceis, pedibus flavis ; femoribus viridibus, alis limpidis. 
—Long. corp. lin. 14; alar. lin. 13. 
Hab. , ex Museo Rev. G. T. Rudd. 
20. Preromatus Orrnus 9, viridis, abdomine cupreo basi viridi, antennis 
fuscis, pedibus fulvis ; femoribus viridibus, alis limpidis.—Long. corp. 
lin. $; alar. lin. 14. 
Hab. prope Londinum. 
21. SctapermA LauacEe?, viridis, abdomine cyaneo, antennis nigris, 
pedibus fulvis ; femoribus viridibus ; tibiis tarsisque apice fuscis, alis 
sublimpidis.—Long. corp. lin. 14; alar. lin. 23. 
Hab. in Scotia, prope Edinam, Dr. Greville. 
Nov. 4.—The Lord Bishop of Norwich, President, in the Chair. 
_ Read a memoir “On the Ambrosinia ciliata of Roxburgh.” By 
the late William Griffith, Esq., F.L.S. &c. Communicated by R. 
H. Solly, Esq., F.R.S., L.S. &e. 
In this paper, written at Calcutta in the year 1835, Mr. Griffith 
enters into a lengthened examination of the characters and deve- 
lopment of the singular plant above named, to which he states his 
attention to have been first directed by Dr. Wallich, who was pre- 
viously acquainted with many parts of its structure. It forms, in 
conjunction with Ambrosinia spiralis, retrospiralis and unilocularis 
of Roxburgh, a genus of Aroidee, for which Mr. Griffith regrets his 
inability to adopt the highly appropriate name of Myrioblastus pro- 
posed by Dr. Wallich, inasmuch as M. Fischer had previously pro- 
posed the generic name of Cryptocoryne for the Ambr. ciliata and 
spiralis of Roxburgh, together with Caladium ovatum, Vent., in which 
latter, however, the structure of the fruit, as described by Rheede, 
appears to be somewhat different. 
The following are the amended characters of the genus, proposed 
by Mr. Griffith :— 
CryprocorynE, Fisch. in Schott and Endl, Mel. Bot. fase. 1. p. 6. 
Spatha tubo brevi ad apicem septo obliquo incompleto semipartito ; limbo 
elongato. Spadix basin versus ovariis cincta, medio filiformis nuda, 
supra antherifera, apice conico nudo calloso spathz septo pilei instar 
tecto. Anthere biloculares, transversim dehiscentes. Glandule nulle. 
Ovaria 5—7, coalita; styli nulli; stigmata 5—7, obliqua. Fructus nu- 
dus, 5—7-locularis (in unica specie 1-locularis); dehiscentid septicida. 
