May iSg6.] 



psrcHE. 



383 



Pyn-goviorplia piinctipctinis. Thom- 

 as, 6S (?). 



TritxaUs brevicoriiis. ]5eiitciim(Uler, 

 2yi. 



This species has been taken on Long 

 Island in the near vicinity of New York 

 by Mr. Beutenmiiller and will very 

 likely be found in Conn. It will be 

 readily determined by the characters 

 given in the kev. In coloration it is 

 very similar to Dicltroinorplta vh'idis, 

 the (J being either brown, or green 

 above with dark brown sides, and the 

 9 either brown or green with a dusky 

 line along the dorsal part of the sides 

 of the pronotum which is continued on 

 the head to the eye. It is found locally 

 in the tall grass of swamps. 



The following measurements are 

 from Indiana specimens received from 

 Prof. Blatchley. 



Antenna. Hind fern. Teg. Teg.> Hmd fern. Body. Total 

 (f lo-ii 14 20 3-4 iS-20 20-2S 



? lo-ii 20 31 b 32-35 3S-44 



6. DiCHROMORPHA gen. nov. 



Type : Chloealtis viridis .Sciidd. 

 The systematic position of this genus 

 and its more important tliagnostic char- 

 acters have been indicated in Brunner's 

 Revision under the name of Chloealtis 

 (to which the type species has errone- 

 ouslv been referred), and to some extent 

 in the preceding key. The type species 

 is well described in Thomas, p. 75. 



7. Dichromorpha viridis Scudd. 

 Figs. 7, 7a, 7b. 



Cliloealtis viridis. Scudder, 455, 

 — 1S62. 



Chloealtis viridis. Smith, Orth. 

 Conn., 374. Fernald, ■56. Morse, 14, 

 104. Beutenmiiller, 392. 



Chrvsochraoii viridis. Thomas, 75. 



Long-winged form, punctulata. 



Chloealtis ptnictnlata. Scudder, 



455- 



Chloealtis pitnctulata. Fernald, 36. 

 •' viridis var. punctulata. 



Morse, 14, 105. 



Chloealtis viridis var. punctulata. 

 Beutenmiiller, 292. 



Chrvsochraoii puiictulatuni. Thom- 

 as, 77. 



Is not this Trux. aug'usticornis ?>U\\. 

 from S. Car. (Rec. orth., 106).^ 



The chief points of interest to be 

 noticed here concerning this species 

 are those connected with its dimorphism 

 in form and color. There is no doubf 

 that the punctulata form is but a case 

 of reversion not uncommon in the fe- 

 male. I have yet to see a male with teg- 

 mina and wings reaching the end of the 

 hind femora, that is to say. a true punc- 

 tulata male, though a variation of 50 per 

 cent, occurs in the length of the tegmina, 

 these measuring 6 to 9 mm. in length. 

 The tegmina of the female are usually 

 S to 10 mm. long, and of the reversional 

 form 19 mm., but examples occur of 

 intermediate length, one having them 

 12 mm. Contrary to what is usually 

 stated both sexes are either green or 

 brown above, but brown males are only 

 about one-third as numerous as brown 

 females. Cf 330 N. E. adults in my 

 collection 20 are pitnctulata 9 . 5 being 



