220 GOMPHUS DILATATUS, VASTUS AND LINEATIFRONS (oDONATA) 
proiiiipi’s wilh dd nuMition of Rny dorsul pale niai’k- 
iiij!; oil sc'giiioiit oijjlil. '^riioir t('stiiiioiiy is of alioiit tho y(*ar 
1855. M. Sovoriii writes of this type in 1921 as having; “ 8ine 
segment; sans ligne elaire median.” Of the material which I 
liave studied only the male from Mrs. Slosson has any ])ale dorsal 
spot on segment, eight— a small green (?) spot at the mid-base. 
Thv. Mo nog raphie ( 1858) says of the female ’s abdomen: ‘Me !()(' 
offi'i' iiiH' eareiK' (loi'sale, ” which is not found on any female of 
either of these t wo forms which I have seen. On this point iVI. 
Sevi'i’in writi's of the ty])e; “lOme si'gment cass6 mais j(' crois 
sans careiu'. ” 
It would seem reasonable' to identify the male cited above as 
in the Museum C’omparative Zoology without locality label, 
as that quoted in the literature of 1858, 1801, 1803 and 1874, in 
which case its provenance would be Oeorgia. It agi'ees with the 
(h'seription of 1858, and it may have been collected in Scrivc'n 
County, according to the data concerning Abbot brought to- 
ge'ther by Scudder.^ “ Thaxter, ” on the label of the other M.C. 
Z. male, is, doubtless, the collector’s name, Prof.lloland Thaxter, 
of Cainbridgf'. Pi'of. Needham writes me that his figure' of the 
venation (lt)()3) was made from Ihe male from Johnson Island, 
I'dorida. 
Gomphus lineatifrons now ,s])Ooics 
(lotnpinis ilihildUix. 1875. Il.'igon, Pi'oo. Bost. Soo. Nat. Hist., xvii, p. 4(1- 
I'l'lie hansiiif;, Mioli., looality only.] 
Ac.slin(i (lildldla. 1S!)(). Kirby, C’at. Odon., )). (iO. lOnly tlio MicIiiKan lo- 
cality.] 
(I'ompluis (lildtdld.s. 189(). Kellicott, .Joiirn. Cincinnati Hoe. Nat. Hist., 
xvm, j). lOt). I c? , Hoiith Columl)US, Ohio.] 
1899. Kellicott, Odon. Ohio, pp. 5.5, 5(1. [Central Ohio.] 
1900. Williamson, 21th Ann. Be])t. I)ei)t. Cool. Indiana, pp. 285, 28(1, 
pi. VI, f. (1 [cf ajijis]. [In jiart.] 
1901. tN'illiamson, Ih'oc. Indiana Acad. Sci., pp. 120, 123. [d'ippecanoe 
l>iv(>r, near War.saw, Indiana; Illinois.] 
(iaiii/ihund^ (lildldtds. 1903. Nec'dham, Bull. 08, N. St. IMiis., j). 205, 
fig. I t. [hahiuin of nymj)h, I'ilkhart, Indiana.] 
(i'oiiii)lids (lildtdhis. 1904. Bidler, Trans. Ainer. tint. Soe. xxx, p. 120, 
|)1. \ I, (ig. 1 f. [Ligiila of nyni^)h.] 
1905. Williamson, Ohio Nalurali.st, v, p. 310. [hivingston, Kmducky.l 
I90S. .MuKkowski, Mull. At iseonsin Nat. Hist. Hoc., vi, j). 83. 
•’ The Mu( I crilics of ( h(' I'la stern Uni( cd S( ales and ( ’.anaila, \'ol. i, pp. 051-2. 
