2l6 ENTOMOLOGICAL NEWS. Qune, '04 



Thaumatoneura Again (Odonata). 



By Philip P. Calvert. 



Mr. F. D. Godman has recently acquired for the Biologia 

 Centrali-America7ia six males of this genus, taken at Carrillo, 

 Costa Rica, by Mr. C. V. Underwood. Four are T. inopinata 

 McLachlan, two are new as follows : 



Wings with a black of dark brown band for their entire width, from the 

 nodus or (even a little proximal thereto) to more than half- 

 way to the pterostigma ; no transverse pale citron band on 

 frons or nasus inopinata. 



Wings uncolored ; a transverse pale citron band on nasus and on frons 

 connecting the yellow genal spots pellucida n. sp. 



Pellucida does not differ in the appendages, nor do the un- 

 colored wings indicate a mere age-difference, for not only is no 

 trace of a dark band visible, but both individuals are pruinose 

 on head, thorax, base and apex of abdomen. Mid-dorsal tho- 

 racic carina yellow, abdominal segments 3-5 largely brown. 

 Abdomen 56.5-58, has wing 47 mm. 



Inopinata also has the mid-dorsal thoracic carina yellow 

 (this part of the thorax was damaged in the type). Three 

 males, with pruinose on pectus and apex of abdomen, have 3-5 

 brown in basal four-fifths, black in apical fifth and narrowly 

 at base ; remaining male with 3-5 all black. Width and con- 

 tours of black bands on wings variable. Abdomen 58-59, hind 

 wing 47-49 mm. 



In all six males. — Antenodals on front wings 3, except 4 on 

 left side of one pellucida ; on hind wings 3, except 2 on right side 

 of one i7iopi?iata, 4 on left side of one ijiopinata and on right side 

 of on^ pellucida. Quadrilateral free, except for a single cross- 

 vein on right hind wing of one inopinata. Two submedian cross- 

 veins, except 3 (2 of them under quadrilateral) on right hind 

 wing of one inopinata. Subnodal sector begins (a) proximal to 

 nodus on left hind wing of one inopinata and left front wing 

 of o\\& pellucida ; (d) at nodus in four hind wings (two asym- 

 metrical) of ifiopinata, and right front and right hind wings 

 of one pelhicida ; (c) distal to nodus on all front wings (eight) 

 and three hind wings (asymmetrical) of inopifzata, on all four 

 wings of one pellucida and on left hind wing of the other pellucida. 



Bidtwg-rapky.—McLachlau, Ent. Mo. Mag. (2) viii, pp. 130-13T, 1897. 

 Calvert, /. c, xiii, pp. 29-32, 1902; Biol. Cent. Am. Neur., p. 58, pi. iii, 

 figs. 16, 21, 27, 1901. 



