ARTHUR DEWITT WHEDON" 433 



Abbreoiations Used in Plates XXI-XXIX 



ada=adductor muscle of dorsal appendages. 



adv = anterior dorso-ventral muscle. 



agin 1, 2, 3, 4, etc. = abdominal ganglia. 



al = alimentary canal. 



ala = adductor of lateral appendage. 



am = pre-rectal ampulla. 



ap = anterior processes of sternum. 



as = air space. 



astd I = first au.xiliary sterno-dorsal muscle. 



astd 11 = second auxiliary sterno-dor.sal muscle. 



be = bursa copulatrix (seminal receptacle). 



brb = branchial l)asket. 



car = carina. 



en = connectives. 



cr = crop. , 



ddr = dorsal dilators of rectum. 



di = muscular diaphragm. 



dtr = dorsal tracheal trunk. 



dv = dorso-ventral segmental muscles. 



dva = dorso-ventral segmental muscles, anterior part. 



dvm = dorso-ventral segmental muscles, middle part. 



dvp = dorso-ventral segmental muscles, posterior part. 



dvo = dorso-ventral oblique segmental muscles. 



dvtp = dorso-ventral tergo pleural muscles of tramea. 



dvts = dorso-ventral tergo sternal muscles of tramea. 



fasd = first auxiliary sterno-dorsal muscles. 



gn = gonapophyses. 



gon = gonads. 



gp = genital pore. 



gz= gizzard. 



h = heart. 



hg = hind gut. 



il = small intestine (ileum). 



inlt = inferior longitudinal tergal muscle. 



itls = internal tertiar\' longitudinal sternal nuiscle. 



lap = lateral abdominal appendage. 



lpsp = lateral primary longitudinal sterno-pleural muscle. 



Is = longitudinal sternal muscle. 



lsta=lateral sternal thoracico-abdominal muscle. 



Istah = posterior jiortion of lateral sternal thoracico-abdominal muscle, 



lta = lateral thoracico-abdominal muscle. 



mg = midgut (or vontriculus). 



mpt = malpighian tubules. 



nc = nerve cord. 



oe = oesophagus. 



TRANS. AM. ENT. SOf., XLIV. 



