25« 



[September 



its puactation microscopic ; 



its color more or less reddish at the 



basis and on the underside. 



S/iinfh ()/ the ovijiosttor long, pro- 

 jecting above the abdomen. 



Hind ti'hise brownish. 



Snbfostdl and hofJi fran>iv<'rsi- ?v'/«.s 

 pale yellowish. 



The subcostal forms with the second 

 transverse vein a rounded angle ; 

 the branch usually running from 

 it towards the anterior margin is 

 obsolete. 



The radial vein gradually disappears 

 before reachin"- the mar"in. 



hind margins and the next seg- 

 ment ; 



its punctation much more distinct; 

 its color altogether brown. 



Sheath short, not projecting above 

 the abdomen. 



Hind femora and fihise brownish. 



These veins pale, colorless. 



The branch of the subcostal, run- 

 ning towards the anterior margin is 

 distinct and well defined, although 

 it is abruptly truncated before reach- 

 ins; that marain. 



The radial vein abruptly stops before 

 reachins; the margin. 



The aments of the same kind of oak ( Q. nitjra) are sometimes deform- 

 ed by swellings, covered with white and pink filaments exactly similar to 

 those of the gall of C. seminator and operator; I suppose, therefore, that 

 they are produced by the sting of the latter gall-fly, although I did not 

 succeed to watch their development. 



QuERCUS VIRENS. Live Oak. Clusters of galls eroweled together 

 round a limh^ not imlikc C. q. ficus Fitch in aj>pearance, hut mucli harder. 



It was communicated to me by Mr. Glover, who brought it from Florida. 

 The specimen before me is a branch round which, on a length of 2^ inches, 

 21 galls are crowded together. Their shape seems originally to be round, 

 ])ut from being close together they have assumed all kinds of irregular 

 shapes, the appearance of the whole cluster being well represented by Dr. 

 Fitch's figure of the gall of C. q.fens. Their color is brownish-yellow, 

 mixed with brown. They are much harder than the galls of O. q. firns. 

 Having bi'oken one open, I found in the kernel the remains of a Oynips. 



QuERCUS VIHENS. ]jice Oalc. Wejodij sircJliiig of the limh. 

 The specimen, communicated by Mr. Glover, is a fragment of a branch 

 iiboul 1 \ inches long with two such swellings; the one is I'ounded about 



