750 



Charles Paul Alexander 



feuppo >t.on) RhapMolabma, Oropeza, Longurio, Aeshna^oma The 

 e«-np„o„. for the go.icra are either entirely new or else the characters 

 have heretofore been n.sufficiently described a„<l figured. The detai 



:lw Wn. '" '"'' "''"'" "' "^"'^ «*>' ^--'^ of crane!fl£ :;': 

 The labrumand the epipharym;.- The labrum is preserved in all crane- 

 fly brvae It ,s usually broadly transverse or ova . The <lom sXe 

 .s clothed w.th short hairs, these being longer on the a.>t ror marrin 



or papillae The lateral regions on the ventral, or epipharyngeal ,ide 



■ZeZ "^ ""'""- '■'' '''''*"^"'' P™P^^ i/vari^sTy arn d 



m the different groups of crane-flies. 



T-Ae Za6f»„.-The labial region of the capsule is of vast importance in 



Z Sed"' Th "V'"" "' "" '•''"^•"™"' P-'^ should r r" 

 appieciated. The confusion in terminology of the dipterous larval labium 

 has been partly outlined by De Meijere (1910:253). The princh al 

 synonyms are as follows: piincipai 



Submentum. 

 (BSTniT luafpS'tT' '"""'• "' '"'"'" "" <M«-rt); s„h„.e„tu^ (Miall); ectol.bium 

 BoSST "'"'""'"" *'■""• <"='°"''"™ <K»"i"); -<iol«biu„, (Holm^en, Vi„,„,er 



«!,P«pfer,„x-Labi™ (Meinert); n,e„,um (Miall. i„ DicranoU.); endolahium (Keilin). 



The submentum is represented by a narrow transvei-se strip in the 

 eacephalous groups of crane-flies, being well shown in Ptychoptera The 

 mentum IS the usually chitinized anterior-ventral plate of he capsule 



teeth 'tBi:: " '' Tf ^"*"™''*- "'*'' '"'°"' '-"ty ™™>"*e 

 teeth. In Bittacomorpha it is more or less distinctly bilobed but is 



untoo hed. In the generalized Tipulidae it is indistiifctly div ded Lo 



an outer plate and, imme<liately dorsad of this and closely applie to or 



tooth of the mentum and m some cases an additional tooth on either 

 side. The inner plate adds a varying number of teeth to the mental 

 p ate, from two mEpiphragma to as many as ten or twelve in .some species 

 of Limnobia. The chitinized plate is completely divided me<lial y in 

 some Enopterini (Molophilus an,l some Erioptera' in the PeS'and 

 m some Hexatomini (Pseudoliinnophila). In this case, each half is 



