1438 
but rotated, and the sand removed after each settling. If this is 
followed out faithfully there will be very little trouble sg pacha 
when the time comes to apply the acid. 
I am offeringito ‘send cleaned material from Tampa Bay to 
any who send me their address, and will allow them to place 
their own value uponit. I make this offer in order'to assist me 
in procuring material from the Atlantic coast, which I am now 
about to work up® I shall’sénd the result of this work to diatom- 
ists all over the couftry, through Messrs. Queen & oy of Phila-_ 
delphia, free to all'who apply for it. 
Respectfully yours, 
GEO. H. TAYLOR. 
A supposed new Genus of Anacardiacee from Bolivia. 
By N. L. Brirron. 
SycocaRPus. Calyx four-toothed; corolla coriaceous, gamo- 
petalous in the bud; stamens eight; anthers oblong, sessile near 
the summit of a campanulate disc; pistil one; ovary four-celled, 
pubescent; style short, also pubescent; stigma peltate, its flat top 
marked by four indistinct grooves; fruit shaped like a young fig, 
dry and crustaceous, indehiscent, imperfectly four celled, contain- 
ing one or two erect seeds, laterally attached to an axillary 
placenta. Mature flowers not seen. 
S. RusBy1. Leaves imparripinnate, 5 to 7 dm. long by 3 to4 dm. 
wide, broadly oblong in outline; leaflets opposite, of from five to 
ten pairs, short ‘petioled, oblong, somewhat obtuse at each end, 
entire, 15 to 20 cm. long by 5 to 6 cm. wide, smooth on both 
sides when mature; racemes appearing in the axils of the leaves, 
once compound, loosely flowered, 25 to 30 cm. long by 5 to 10 
cm. wide at the base; flowers nearly sessile; fruit brown, 12 to 
18 mm. long when mature, pubescent when young, but soon _ 
becoming glabrous. 
A tree of some 12 metres in height, broadly branching from 
near the base, reaching an extreme trunk diameter of nearly one 
metre, the ultimate branches erect; wood rather soft, covered 
with a thick ash-colored bark, which becomes rough only in age ; 
leaves erect-clustered at the ends of the branches. 
Collected in Bolivia by Dr. H. H. Rusby, May, 1886. 
