160 INSECTA. 
two first abdominal annuli are covered with a russet-down; an- 
tenne black and somewhat longer than the body. The antenne 
of the female are short; the maxille and labium project slightly 
at base, the abdomen is marked with grey stripes, and the anus 
is russet. She appears in the very beginning of spring(1). 
In the other Apiariz of this subdivision, the paraglossz are 
much shorter than the ligula; they always exhibit three cubital cells. 
In some, the maxillary palpi evidently consist of six joints, as in 
Me.uirrurGa, Lat. 
Where the antenne are short and terminated in a club in the 
males. All the joints of the palpi are continuous and in the same 
direction(2). 
Antnopuora, Lat.—Megilla, Centris, Fab. 
Where the antenne are filiform in both sexes, and the two last 
joints of the labial palpi form a little oblique stem. The 
A. parietine, Ann. du Mus. d’Hist. Nat., ITI, builds her nest in 
walls, and constructs a perpendicular and slightly curved tube 
at its entrance of grains of earth. Having deposited her eggs, 
she destroys it, or perhaps employs it in closing up the en- 
trance(3). é 
In others, the maxillary palpi consist of but five joints, and those 
of the labial palpi are continuous. This is what distinguishes the 
Sarapopa, Lat.(4) 
Finally, others have but four joints in these maxillary palpi. The 
first joint of the posterior tarsi of the males is very large, curved, 
and arched or concave at its internal extremity. A stout, dentated 
spme is observable at the same end of the posterior tibiz of the fe- 
males. 
{1) Lat., Gen. Crust. et Insect., IV, 173. 
(2) Lat., Ibid., 173. 
(3) Lat. Ibid., 173. 
(4) Lat., Gen. Crust. et Insect., IV, p. 173. 
