Vol. xxiii] ENTOMOLOGICAL NEWS 199 



Indiana, has some gray on either side of 9 and 10; other males 

 from Tennessee, Pennsylvania and Maine have the sides of i 

 pale, and a more or less distinct lateral spot on 2. 



Females from the same localities show fewer differences. 

 Unless obscured, there is present a longitudinal, dorsal pale 

 area, adjoining or near the black dorsal carina ; a similar pale 

 area occupies the mesepimeron in all but its most anterior and 

 dorsal portions ; and a similar large pale area occupies the mete- 

 pimeron, excepting only a narrow border ; along the second lat- 

 eral suture on the metepisternum a narrow area of the same 

 kind is less definitely developed. These pale areas give the 

 impression of a thin coating of paraffin over the general body 

 color. They seem to depend largely on post-mortem changes, 

 and asymmetrical specimens are not rare. One female from 

 Indiana is remarkable; the pale areas on the thorax are of 

 usual size and definiteness, but instead of being surrounded by 

 the usual light brown or pearly gray, the pale areas lie in a 

 field of dark brown or nearly black ; the result is a thoracic 

 color pattern not at all suggestive of other individuals of either 

 sex in which, if any dark color appears, it is in the usual pale 

 areas of the normal females ; in this case the pale areas remain 

 pale, but the adjoining areas are dark. Two other Indiana 

 specimens suggest this female. In two other Indiana females 

 the thorax is light brown with green dorsal thoracic stripes of 

 indefinite pattern, suggesting Gynacantha. 



To describe the dorsum of the abdomen of mocsta as pale 

 colored is only partially correct. About segment 6 the lateral 

 apical and basal black fail to connect in a continuous line as 

 they do on the preceding segments, and the black decreases 

 posteriorly and disappears before 9. If segment 3 or 4 be 

 examined carefully it will be apparent that the dorsum of each 

 segment above the lateral black streak is darker colored than 

 the sides below the streak, and that the definition of the black 

 and paler is obscure on the dorsal side of the streak ; there is 

 no well-defined longitudinal dorsal paie area, and the dorsum 

 color (reddish brown) is a very different color from the pale 

 basal rings of obscure bluish. 



