FIREFLY GENUS PYRACTONEMA — McDERMOTT 153 



P. nigripennis is described as having a maximum length of 17% 

 lines (37.1 mm.). This measurement should probably read 7% lines 

 (15.9 mm.), although it is less than many of the specimens seen. 



There seem to be several misprints of dimensions in Solier's descrip- 

 tions. P. brevipennis is described as 5% lines (12 mm.) long by 4% 

 lines (9.0 mm.) broad. The latter figure is probably an error for 

 1% or 2% lines (3.53 or 5.65 mm.). 



Pyractonema bifenestrata (Fairmaire and Germain) 



Figure 3 

 Lucidota bifenestrata Fairmaire and Germain, Coleop. Chilensia, vol. 2, p. 2, 1862. 



Material: 125 males and 38 females. 



Dimensions: Males 9.6 to 15.0 mm. long by 3.0 to 5.0 mm. broad; 

 average 12.3 by 4.1 mm. Females 10.5 to 14.0 mm. long by 3.5 to 

 5.5 mm. broad; average 12.7 by 4.3 mm. 



Pronotum smaller and narrower than in P. nigripennis. About 

 0.8 as long as broad in males, 0.75 in females. 



Elytra about 0.85 of total length in males, 0.7 in females. 



Aedeagus as in figure 3. 



It is noted that there is no reference in the descriptions or key 

 to the "two windows" which should apparently be present on 

 the pronotum of P. bifenestrata. Two translucent areas in the apical 

 portion of the pronotum were observed in several specimens of different 

 species, and it seems probable that these areas are a modification 

 of the pronotal pigmentation which may occur generally in this genus. 



Pyractonema obscura (Olivier) 



Figure 8 



Lampyris obscura G. A. Olivier, Ent. Coleop. vol. 2 (28), p. 18, 1790. 



Lampyris bardelli le Guillou, Rev. Zool. vol. 7, p. 222, 1844. 



Pyractonema lugubris Solier, in Gay, Hist. Fis. Pol. Chile, vol. 4, Zool., p. 449, 



1849. 

 Pyractonema binotata Solier, in Gay, Hist. Fis. Pol. Chile, vol. 4, Zool., p. 449, 



1849. 

 Chauliognathus bioculata Blanchard, in Dumont D'Urville, Voy. Pol Sud, vol. 



4, p. 70, pi. 5, fig. 7, 1853. 

 Pyractonema fissicollis Solier, in Gay, Hist. Fis. Pol. Chile, vol. 4, Zool., p. 449, 



1849. 



Material: 115 males and 79 females. 



Dimensions: Males 5.0 to 11.0 mm. long by 2.0 to 4.6 mm. broad; 

 average 9.5 by 3.25 mm. Females 6.0 to 14.0 mm. long by 2.2 to 

 3.45 mm. broad; average 10.2 by 3.1 mm. 



Pronotum about as wide as in P. bifenestrata but proportionately 

 shorter. Length about 0.63 of width. 



Elytra about 0.8 of length in males. 0.7 of length in females with 

 a slightly elliptical outline. 



Aedeagus as in figure 8. 



