434 Dr. H. Woodward — On Etohlattina Peachii. 



Detailed description. — The pronotum is nearly semicircular in out- 

 line, its anterior border being rounded and its posterior border 

 straight. It is twice as broad as it is long. 



The head is seen occupying a small rounded indentation in the 

 centre of the anterior border of the pronotal shield. The epicranial 

 plate is divided longitudinally down the centre ; there is also a trans- 

 verse furrow probably indicating the ocular and genal divisions. 



Behind this notch in which the head lies, the pronotum is orna- 

 mented with two small slightly-raised prominences, and two small 

 rounded depressions. Breadth of pronotum, 12 millimetres, length 

 5 mm. The wing-covers and ivings, which are nearly alike in form 

 and size, are each about 10 mm. in length, and about 5 mm. in 

 greatest breadth. The mediastinal vein is seen in all 4 wings, also 

 the veins of the Anal and the Internomedian area. The wings 

 appear to conceal the whole of the mesonotum and the greater part 

 of the metanotum. The length of the mesonotum and metanotum 

 together is 6 mm. 



The abdomen is 12 mm. in length by 10 mm. in breadth at its 

 broadest anterior part. The segments 9 in number diminish in 

 breadth rapidly, being only about S^ mm. in breadth at the posterior 

 border. Fully half the breadth of the segments consists of the free- 

 edges (epimera) of the terga, the body itself being not more than 

 5 mm. in breadth at the widest part, the terga making up the remain- 

 ing 5 mm. 



Compared with other fossil Cockroaches, the wings in this fossil 

 Blatta have a close resemblance to those of Blattina insignis,^ Gold. 

 (PL XII. Fig. 3), from the Coal-Measures of Saarbriick (Ehenish 

 Prussia) ; also to Leptohlattina exilis, H. Woodw., from the Coal- 

 Measures of Coseley, near Dudley (PI. XII. Fig. 2).^ 



I mention in my description of L. exilis (op. cit. p. 57) that "there 

 is evidence of epimeral pieces to 3 of the segments," which would 

 have greatly increased their width. 



Compared with recent Cockroaches, there seemed at first but 

 small hope of finding any form amongst living Blattinse which 

 would serve for comparison with this remarkable fossil ; but 

 through the kind assistance of Mr. W. F. Kirby, of the Zoological 

 Department (British Museum of Natural History), I was referred to 

 the figures and description of Blattariee given by Brunner de Wat- 

 tenwyl,^ from the West Indies and Brazil, and particularly to one 

 named \Blabera atropos, by Stoll. This form, of which Brunner 

 figures the male and female, and also the larva, presents in its larval 

 stage * a close approach to our fossil example, not only in the rudi- 



^ " Fauna Sarepontana Fossils," Die fossilen Thiere aus der Steinkohlenformation 

 von Saarbrucken von Dr. Frederick Goldenberg; Saarbruck, 1873. 4to. 1st Heft, 

 mit 2 Tafelen (Taf. ii. fig. 14). 



^ See "Some New British Carboniferous Cockroaches," by Henry "Woodward, 

 Geol, Mag. 1887, Dec. III. Vol. IV. PL II. Figs. 2 and 3, pp. 56—58. 



^ Noveau Systems des Blattaires, par Charles Brunner de Wattenwyl, Vienna, 

 1865, p. 375-6 and tab. xii. 55, A— G. 



* Op. cit. tab. xii. 65, F. 



