ingly communicated the drawing here figured. Its native 
country is Mexico. Mr. F. Macxte observes, that itis “a 
very distinct and remarkable species, bearing dark points 
in the axils of the mammille, which in hot weather exude 
a dark-coloured viscid matter, which I have not observed 
in any other species.” 
Descr. Stem, in the specimen here figured, about six 
inches high, oblong and cylindrical, covered all over with 
large, conical mammille, three-quarters of an inch long, 
angled with about four sides, and tipped witha minute woolly 
tuft, from which springs a fascicle of seven or eight slender 
spines, mostly three or four lines in length, but one of them 
is twice as long as the rest. Flowers moderately large, ter- 
minal. Calycine tube short. Petals numerous, imbricated, 
spreading, linear-oblong, of a delicate straw-colour. Sta- 
mens and siyle included. Filaments red. Anthers and 
stigmas yellow. 
