Mr. J. Miers on the Menispermacece. 315 
valde extantibus, acutis, jugoobtuso parallelis, utroque latere 
circ. xvi.; valv. term. seriebus bullularum cire. xviii.; mucrone 
submediano, inconspicuo ; umbonibus haud prominentibus ; tota 
superficie minutissime granulosa: intus valvarum lobis mediarum 
i.- term. circiter x.-fissis; sinu lato, planato; suturis planatiss 
limbo pallii angusto, minutissime squamulis furvicaceis creberrime 
instructo ; interdum pilulis intercalatis. Long. ‘8, lat. °4 poll., 
div. 125°, 
14. Ischnochiton serratus. 
T. testa parva, cinerea, olivaceo hic et illic, preecipue ad suturas, 
punctata, interdum sanguineo maculata ; ovali, subdepressa, suturis 
indistinctis ; tota superficie minutissime granulata ; ar. diag. valde 
distinctis, costis latissimis obtusis ii._v. munitis, interstitiis nullis; 
marginibus posticis eleganter serratis; ar. centr. costis acutis, 
parallelis, utroque latere circ. xil.; jugo obtuso, haud umbonato ; 
costis transversis, subradiantibus, fenestrantibus, interstitiis im- 
pressis : mucrone mediano, obtuso; valv. term. costis obtusis, ut 
in ar. diag., circ. xx.: intus valvarum mediarum lobis bifissis, 
terminalium cire. ix.-fissis ; lobis suturalibus magnis : limbo pallii 
squamis majoribus, imbricatis, vix striatulis. Long. °34, lat.*2 poll., 
div. 115°. 
Differs from Elenensis in the sculpture of the terminal valves. 
[To be continued. } 
XXXIII.—On the Menispermacee. 
By Joun Miers, F.R.S., F.L.S. &e. 
[Continued from p. 135.] 
4, TINOSPORA. 
Tue first outline of this genus was given in my “ Remarks on 
Menispermacee,” in 1851 (Ann. Nat. Hist.). It comprises a 
group of Asian and African plants, all of climbing growth, the 
type of which is the Cocculus cordifolius, DC.: the stems 
have a lax, splitting, membranaceous bark, often furnished with 
verrucose tubercles. Colebrook and Roxburgh relate, concern- 
ing some of the species mentioned below, that when any portion 
of their stems becomes severed, it sends out, even from the 
greatest height, a sprout which lengthens downwards till it 
reaches the ground, when it takes root, by which the severed 
portion continues to maintain its flourishing growth; and they 
have ‘seen radicant shoots of this description, 30 feet long, not 
thicker than a pack-thread. The plants have all roundish cor- 
date leaves, more or less membranaceous, generally glabrous, 
upon slender petioles ; their inflorescence is an elongated supra- 
axillary raceme, with small glabrous flowers; their somewhat 
globular fleshy drupes contain a spherical, smooth or tubereu- 
21% 
