NO. 2 



HONEY BEE— SNODGRASS 



to a small plate (a) inflected from the lower lip of the foramen 

 magnum. 



The antennae. — The antennae arise close together near the center 

 of the face (fig. i A, Ant), where each appendage is implanted in a 

 small membranous area with a slightly elevated rim, known as the 

 antennal socket. Each antenna (fig. 2 A, G) is divided by an elbow 

 into two major parts, a basal stalk, or scape (A, Sep), and a long 

 distal arm subdivided into 11 small sections in the female (A) and 



Fig. 2. — The antenna. 



A, right antenna of worker and cranial muscles inserted on base, mesa! view. 

 B, two consecutive subsegments of flagellum pulled apart to show necklike 

 membranous connection. C, inner rim of base of right antenna, showing position 

 of muscle insertions. D, base of right antenna and section of antennal "socket" 

 through antennafer (a/), posterior view. E, joint between scape and pedicel, 

 ventral view. F, rim of right antennal socket, anterior view. G, antenna of 

 drone. H, proximal part of antenna of worker, showing muscles in scape 

 inserted on pedicel. 



12 in the male (G). The proximal piece of the arm is usually 

 distinguished as the pedicel (Pdc), and the rest termed the flagellum 

 {PI), but in the bee there is no pronounced differentiation between 

 these two parts. The flagellar subdivisions are not true segments 

 since they are not articulated upon each other nor provided with 

 muscles; the rounded base of each (B) fits into a distal depression 

 of the one proximal to it, and the two are connected by a narrow, 

 cylindrical, necklike membrane. The joint between the pedicel and 

 the scape, on the other hand, has a dicondylic leglike articulation (E), 

 and hence forms a definite transverse axis of movement, on which 

 the pedicel and flagellum are turned up or down by levator and 



