108 Mr. Kinnvon Mr.W.S. MacLeay’s Doctrine of Affinity, óc. 
Corpus nigrum, sub sole splendore obscure metallico subnitens. 
Caput subpilosum. Truncus brunneo-niger, supra lineis 
tribus longitudinalibus, intermedio elevato, nigris, sub alis. 
primoribus strigis tribus obliquis, superiori obsoletiori, pal- 
lidis. Ale subhyalinæ, basi lete sanguineæ, posticis apice 
macula subrotunda ejusdem coloris. Stigma nigrum ob- 
longo-quadratum. Abdomen elongatum, tenue, transversim 
rugulosum, basi et apice subincrassatum. Forceps analis 
rectus? inferiori subincurvo. 
N.B. In quibusdam speciminibus macula rotunda sanguinea 
alas primores item apice ornat. An sexûs varietas ? 
Nomen dedi in honorem D. Brightwell Norvicensis, insectorum col- 
lectoris indefessi, felicis ; indagatoris acuti, docti. 
The upper anal forceps in the specimens of this insect that I 
have had an opportunity of examining were mutilated ; I cannot 
therefore be positive that it does not approach nearer to Lestes 
of Dr. Leach, the stigma of which its wings exhibit, than to 
Agrion; but as these last are not suddenly narrower at their 
base, as in the former genus, I have considered it as belonging 
to the latter. 
Fa 
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