56 FOSSIL INSECTS OF THE BRITISH COAL MEASURES. 



Family LAMPROPTILID/K (Bronguiart), Handlirsch. 



1885. Brougniart, Bull. Soc. Amis Sci. Nat, Eouen [3], ami. xxi, p. 63. 

 1906. Handlirsch, Die Fossilen Insekten, p. 109. 



Fore- and hind-wing strongly marked. Veins of the anal and cubital groups 

 numerous and directed obliquely backwards. Hind- wings short and broad. 



Genus BOLTONIELLA, Handlirsch. 



1885. Lamproptilia, Brougniart, Bull. Soc. Amis Sci. Nat. Eoueu [3], anu. xxi, p. 63. 

 1919. Boltoniella, Haudlirsch, Revision der Paliiozoischeu Insekteu, p. 21 . 



Generic Characters. Fore-wings two and a half times as long as wide; hind- 

 wings as long as wide. Outer margin of former curved, of hind-wings almost 

 straight. Apex of wings rounded. The fore-wings are almost elliptical, and the 

 hind-wings rectangular in shape. The costa is marginal and the costal area some- 

 what narrow. The subcosta joins the costa far out. Radius simple, the radial 

 sector arising near the base of the wing and giving off three forked branches, 

 which pass obliquely to the inner half of the wing-apex. Median dividing into 

 two main branches, the inner twice as much divided as the outer. Cubitus with 

 two main branches, each breaking up into numerous twigs. Interstitial neuration 

 consisting of widely spaced straight cross-nervures. 



Handlirsch, who has formed this genus, admits that it reminds one in mam r 

 ways of Lamproptilia, but by reason of the small size and closer spaced cross- 

 nervures he separates it from that genus. 



Boltoniella tenuitegminata (Bolton). Plate III, fig. 4. 



1911. Lamproptilia tenuitegminata, Bolton, Quart. Journ. Geol. Soc,, vol. Ixvii, p. 170, pi. x, fig. 6. 



Type. A right hind-wing, in a small fragile block of brown mudstone or shale, 

 crowded with plant-remains ; Museum of Practical Geology, Jermyn Street, London 

 (no. 24509). 



Horizon and Locality. Coal Measures (No. 2 Rhondda Seam, base of the Pennant 

 Series) ; 1} miles north-east of Resolven Station, Glamorganshire. 



Specific Characters. Broad wings of great tenuity and blattoid-like in character. 

 Principal veins much divided, and fading out on the inner margin. Apex of wing 

 bluntly rounded. Anal veins very numerous. 



Description. The type-specimen consists of a right hind-wing of considerable 

 tenuity, the underlying plant-remains being easily traceable through the texture 

 of the wing. The greatest length is 29 mm., and the greatest breadth 7 mm. The 

 neuration is so similar to that which I have observed in the hind- wings of blattotfs 



