USED IN ENTOMOLOGY. 105 



Post-antennal organs: in Cnllcnibola, oblong or ellipsoidal organs situated 

 just caudad of the bases of the antennae. 



Post-brachial: = pobrachial ; q. v. 



Post-cerebral: applied to that pair of salivary glands in bees, situated close 

 to the posterior wall of the head. 



Post-clypeus: in Odonata, the upper of the two parts into which the clypeus 

 is divided : in Psocidcc, a peculiar inflated structure behind the clypeus : in 

 general, the posterior or upper part of clypeus when any line of demarca- 

 tion exists : = supra-clypeus ; nasus ; afternose ; paraclypeus ; first clypeus ; 

 clypeus posterior. 



Post-costa: =rsub-costa (Comst.) : in Odonata = 1st anal vein (Comst.) : 

 in Trichoptera =' anal. 



Post-costal space: Odonata; the cell or cells lying posterior to the post- 

 costa ; = anal cell (Comst.). 



Post-cubitals: = post-nodal spaces; q. v. 



Post-dorsulum: the middle piece of the metanotum, between the meso- 

 phragma and post-scutellum. 



Post-embryonic-otic: the stage after the insect has come out of the egg. 



Post-epistoma: that part of the head behind the clypeus in Hymcnoptera: 

 see also post-clypeus. 



Posterior: hinder or hindmost; opposed to anterior: in Diptcra; applied to 

 that face of the legs which is not visible when viewed from the front, the 

 legs being laterally extended. 



Posterior angle: of thorax, in Colcoptcra, is the lateral angle near base of 

 elytra : of the wings hind angle ; anal angle ; q. v. 



Posterior cells: in Diptcra (Will.) : 1st = radial 5 (Comst.) : 2d medial 1 

 (Comst.): 3d = 2d medial 2 (Comst.): 4th = medial 3 (Comst.): 5th 

 = cubitus 1 (Comst.). 



Posterior cephalic foramen: in Odonata, the opening of head posteriorly 

 through which the cavities of head and thorax communicate. 



Posterior field: of tegmina, =anal field; q. v. 



Posterior intercalary: in Diptcra, is one of the anal veins (Comst.). 



Posterior lateral margins: in Orthoptcra, extend from base of pronotum 

 downward to the posterior angle of sides. 



Posterior lobe: of the pronotum in Orthoptcra, see lobe: in Diptera, that 

 part of wing between axillary incision and base : = alar appendage 

 (Loew). 



Posterior margin: = inner margin; q. v. 



Posterior pereion: the metanotum. 



Posterior pleon: the terminal segments of the abdomen. 



Posterior pleopoda: the anal clasping legs of caterpillars: see planta. 



Posterior stigmatal tubercle: on thoracic and abdominal segments of cater- 

 pillars ; varies in position from substigmatal to stigmatal posterior ; some- 

 times united to V : it is IV of the abdomen, II of the thorax (Dyar). 



Posterior trapezoidal tubercle: on the thoracic and abdominal segments of 

 caterpillars ; subdorsal, posterior, always present, rarely united with I : it 

 is II of the abdomen, Ib of the thorax (Dyar). 



Posterior veins: those separating the posterior cells. 



