1969] 
Kukalova — Palaeodictyoptera 
213 
Lameere distinguished only three tarsal segments, although five are 
clearly visible with the coating of ammonium chloride. The wing 
venation is visible in great detail only under glycerin. It was in- 
completely figured by Brongniart, and misinterpreted by Lameere; 
Handlirsch even published reconstructions of the wings, these bearing 
little resemblance to the actual fossil structure. 
Fore wing: length 50 mm, width 21 mm. Costa sharply curved 
towards the base. Fore wing almost oval in shape; apex rounded, 
placed at about the wing axis; subcostal area abruptly broadened 
shortly beyond the base; Sc terminating on R just beyond midwing; 
Rs originating shortly before midwing, close to Ri ; Rs sending off 
five curved branches, which may be forked, the first fork originating 
close to the origin of Rs; MA with one, MP with 3 branches; CuA 
forming a long branching fork, CuP with 3 branches. Anal area with 
seven veins, mostly branched. 
Hind wing: length 49 mm, width 23.5 mm, broadest just before 
midwing. The anterior margin straight, posterior margin moderately 
concave. The hind wing differs from the front wing in having mark- 
edly narrower costal area, in the less pronounced curvature of Rs, 
and the branches of M, and in having more branches on MP. Cross 
veins fine, dense, mostly curved, sometimes anastomosed and rather 
irregular. 
Body structures : Head small with large conspicuous eyes. Clypeus 
small, oval, with two pairs of transverse ridges. Length of beak 20 
mm ; labrum lanceolate, reaching about one-sixth of the complete beak 
length. Shape of prothoracic lobes unknown, but its membrane not 
much sclerotized, and having radiating veins connected by numerous 
cross veins. Femur of fore leg 8 mm long; tibia 9.5 mm long; 
tarsus 3.8 mm long. The tarsus is composed of five tarsomeres, the 
first of them being slightly longer than the others, the last one slightly 
shorter than the others; claws robust, widely divergent, curved. 
Arolium circular, as long as the last tarsal segment. Hind leg with 
the tibia 15 mm long. 
References 
Bolton, H. 
1917. On Some Insects from the British Coal Measures. Quart. Journ. 
Geol. Soc. 72:43-62. 
Brauer, F. 
1886. Ansichten iiber die palaeozoischen Insekten und deren Deutung. 
Ann. kk. Nat. Hofmus. Wien. 1: 87-125. 
Brongniart, C. 
1885. Les insectes fossiles des terraines primaires. Bull. Soc. Rouen. 
1885: 50-68. 
