THE EMBRYOLOGY OF THE HONEY BEE 263 



FtGng, frontal ganglion. 



FtNv, frontal nerve. 



Gl, gland. 



GngC, ganglion cells. 



Ht, heart. 



HtCl, pericardial cells. 



Hint, hind intestine. 



Hyp, hypodermis. 



ICL, inner cortical layer. 



iL, 2L, 3L, legs (rudiments). 



Lb, labium. 



LC, lateral cords. 



LF, lateral folds. 



Lm, labrum. 



LNv, lateral nerve. 



LP, lateral plate. 



LTraT, longitundinal tracheal trunk: 



M, micropylar area. 



Mai, Malpighian tubules. 



MC, median cord. 



MclEnt, muscular layer of alimentary canal. 



Md, mandible. 



MdNv, mandibular nerve. 



Meso, mesoderm. 



Meso 1-3L, mesoderm of leg rudiments. 



Mint, mid-intestine. 



MP, middle plate. 



Mth, mouth. 



iMx, first maxilla. 



2Mx, second maxilla. 



Nbl, neuroblasts. 



NIG, neural groove. 



Nlm, neurolemma. 



NIR, neural ridges. 



Nv, nerve. 



NvF, nerve fibres, "punksubstanz." 



Oe, oesophagus, fore intestine. 



OcCom, circumoesophageal commmissure. 



Oen, oenocytes. 



OMcl, oblique trunk muscles. 



OpL, optic lobe, equivalent to the first lobe of the protocerebrum iBr u 



OpPl, optic plate. 



Ost, ostium. 



Ov, ovary (rudiment). 



ParC, paracardial cells. 



Phy, pharynx. 



