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THE AMERICAN NA T URA LIST [Vol. XL 



following statement: "No Odonate nymphs are known to live in 

 salt water, but probably some coast species, such as Ischnura 

 ramburii and M icrathyria herenice live in that which is brackish." 



The writer's attention was first attracted to the presence of 

 drafjonflies in brackish water by the discovery that many common 

 Pacific Coast species were breeding abundantly in a slightly 

 brackish pond near Victoria, British Columbia. No estimate of 

 the salinity could be made but it was slight. Again at Wood's 

 Hole, Mass., many common forms were also found living in brack- 

 ish ponds of varying density. The following list of species noted 

 breeding in brackish water will serve to show what a variety of 

 those ordinarily l)reeding in fresh water may, if occasion recjuire, 

 live equally well to all appearances in slightly salt water. At 

 Victoria, B. C: Enallagma carunculatum, Ischnura pervarva, 1. 

 cervula, Acschna caUjornica, Sjpnpetrum madidum, Mcioihnnis 

 simplk'irnin,- yav. mllnrata, Lihclhda quadrimaculata, and L. 

 forcn.'ii.s. At Wood's Hole, Mass.: Lestcs unguiculatus, L. rec- 

 twujidaris, Xcludrn n i<i irrnc, Knallof/ma civile, Ischnura vrrticalis, 

 Ana.r Junius^ L, nmrliinia iniarta, Mirralh;/ria herenice, Sijmpdrum 

 ruhivuinlnhim. Lihrlhda fnilrlnUa, L. <ni ri pruuis, and Flathemis 

 hjdia. Tlicsc records were ()l)tiiiiu'(l partly by identification of the 

 nymphs, partly by rearing the iniugos, and partly by collecting the 

 young imagos just after their transt'orinatioii. Tli(> Wood's Hole 

 list represents only seven weeks collcciinu' in -Inly ami August and 

 in a very restricted locality so it is liiulily piohahlc that the list 

 represents only a few of those that may Ix- t'oiiiid in brackish 

 water. (3f the above species, only one, }d icnifh ijrid herenice, is 

 limited in its range to near the coast, and as it also l>rc(Mls in fresh 



brackish water species. 



In order to determine tli.- >a!inity ..f water in whici) -Ira-onfii^'s 



