ACACIA SPHAEROCEPHALA.

THORN FROM TAMPICO, MEXICO, WITH THE ANTS,

LARVAE, AND PUPAE (PSEUDOMYRMA BELTI VAR. FULVESCENS) TAKEN OUT OF IT. RECEIVED FROM J. M. CUARON. X 2. ORIGINAL.

ACACIA CORNIGERA. a, HERBARIUM SPECIMEN COLLECTED BY SCHIEDE IN MEXICO AND DESCRIBED BY SCHLECHTENDAL AND
CHAMISSO UNDER THE NAME ACACIA SPADICIGERA; b, LIVING SPECIMEN FROM GREENHOUSE AT WASHINGTON. FLOWER
SPIKES WITH LONG STEMS, CONTRASTING WITH THE SUBSESSILE SPIKES OF A. HERNANDEZII.

NATURAL SIZE.

ACACIA HERNANDEZII, WITH SPREADING THORNS, LIKE BULL HORNS, SUBSESSILE FLOWER SPIKES, INDEHISCENT PODS, AND DOUBLE ROW OF SEEDS EMBEDDED IN SUGARY PULP. FROM THE MEXICAN HUASTECA REGION. NATURAL SIZE. ORIGINAL.

ACACIA NICOYENSIS, ONE OF THE SPECIES OBSERVED BY BELT IN NICARAGUA. FLOWER SPIKES USUALLY SOLITARY, FLORETS BORNE ON A THICK CYLINDRICAL RECEPTACLE RESEMBLING A MINIATURE CORNCOB. FROM NICOYA, COSTA RICA. NATURAL SIZE. ORIGINAL.

ACACIA COSTARICENSIS, A SECOND SPECIES OBSERVED BY BELT IN NICARAGUA. FLOWER SPIKES FASCICLED, FLORETS BORNE ON A SLENDER PLIABLE RECEPTACLE. NATURAL SIZE. ORIGINAL.