42 MR. R. J. TILLYARD : LIFE-HISTORIES AND 



This species is very distinct from T. godeffroyi by its hyaline wings without 

 trace of bands, its short pterostigma, open venation, absence of membranule, 

 very regular prolongation of subcosta, smaller size, and somewhat different 

 coloration. It appears to be a specialized asthenogenetic offshoot from the 

 main stock, and is one of the smallest jEschnince known to me. 



B. HYLOCHEOME SERIES. 



Colour black or dark brown, marked with sjiots, blotches, and bands of 

 bright yellow or green, yellowish-green, bluish-green, or grey ; wings 

 alw^ays completely hyaline. This colour-scheme is very striking during 

 flight, but gives great protection to the resting insect, which partakes of the 

 particoloured scheme of the surrounding forest. Flight diurnal. 



Grenera : — 



1. Basilar space reticulated 1. DENDEOiESCHNA, n. g. 



(Tj'pe, Caliceschna conspersa, Tillyard.) 



2. Basilar space free. 



2 a. Female witli a deutigerous plate on tlie under- 

 side of segment 10 2. Atjsteo^schna, Selys. 



2b. Female with deutigerous plate obsolescent, but 

 with a shai'ply-projecting dorso-apical spine 



on segment 10, between appendages 3. Noto^schna, n. g. 



(Type, AustrocEschna sagittata, Martin.) 



Genus 1. DE]srDRO^<:scHNA *', n. g. 



Neuration fairly open ; median, submedian, and hypertrigonal spaces 

 reticulated. Rs forked well before level of pterostigma ; Rspl separated 

 from lower branch of fork by a single row of cells. M^ distinctly waved in 

 its distal half, bending away from M^ so as to increase the intervening cell- 

 rows from one to two. Anal triangle of ^ wide ; membranule small, 

 Mspl one row of cells below M^. Nodus placed well beyond halfway 

 between base and pterostigma. Pterostigina very strongly braced, short. 

 Triangles short, wide, 2-3-celled. Sc normal. 



Eyes large and very contiguous. Front exceedingly wide^ elevated into 

 a largo semicircular ridge. Vertical tubercle almost obliterated ; ocelli 

 nearly touching each other. Antenna3 very wide apart. Female with a 

 dentigerous plate under segment 10. 



Type : Caliceschna conspersa, Tillyard. 



I propose this new genus for the reception of the type-species only, since 

 it is evidently not congeneric with the other known species of CalicescJma. 

 The fact that the type of this latter genus (C. micro stic/ma, Schneid.) occurs 



* Greek, Sei'Spor, a tree. 



