NO. 2 HONEY BEE SNODGRASS II3 



and the presence of special muscles in connection with the ovipositor 

 and the male genital organ. 



///. Lateral internal dorsal muscle of abdominal segment VII. — 

 In the drone (fig. 29 B) as in preceding segments; in the queen (fig. 

 28 E) attached on anterior part of spiracular plate of segment VIII ; 

 absent in the worker (C). 



ijS. Median internal dorsal muscle of abdominal segment VII. — 

 In the drone (fig. 29 B) as in preceding segments; in the queen (fig. 

 28 E) a small muscle attached on spiracular plate of segment VIII 

 near spiracle ; in the worker (fig. 28 C) a much larger muscle similarly 

 attached. 



i/p. External dorsal muscle of abdominal segment VII. — As in 

 preceding segments in the drone; in the female a reversed dorso- 

 ventral muscle from lower edge of tergum VII to upper angle of 

 spiracular plate of segment VIII (fig. 28 C, E). 



180, 181. Spiracular muscles of abdominal segment VII (fig. 28 C). 

 — As in preceding segments. 



182. First and second lateral muscles of abdominal segment VII. — 

 First lateral present as a reversed muscle inserted dorsally on lateral 

 apodeme of sternum VII in both the drone and the worker, but very 

 small in the latter (No. ^b of Rietschel, 1937). The muscle designated 

 182 in the worker (fig. 28 C) also is attached on the lateral apodeme 

 of sternum VII, but arises posteriorly on the tergum and is probably 

 the second lateral of segment VII. 



18^. Third lateral muscle of abdominal segment VII (fig. 28 C). — 

 Present in both the male and the female as a dorsoventral muscle 

 between tergum and sternum. 



184. Intersegmental sternotergal muscle of abdominal segment VII 

 (fig. 28 B, C). — Present in the female only; origin anteriorly on 

 sternum VII in line with lateral ventral muscles of preceding seg- 

 ments (B), inserted posteriorly on anterior ventral angle of spiracular 

 plate of segment VIII. 



18^. Median internal ventral muscle of abdoininal segment VII 

 (fig. 28 D). — Present in the queen only, attached posteriorly on lateral 

 genital pouch. 



186. Lateral internal ventral muscle of abdominal segment VII 

 (fig. 29 B, D). — Present in the male only; a short muscle arising on 

 sternum VII at base of anterior apodeme (B), inserted posteriorly 

 on long lateral arm of sternum VIII. 



i8'/. Median internal dorsal muscle of abdominal segment VIII. — 

 A short muscle in the male (fig. 29 B) attached posteriorly on apodeme 

 of small tergite of segment IX; represented in the worker (fig. 28 C) 



