174 INSECT-REMAINS FROM THE SOUTH WALES COALFIELD. [Feb. 191 1. 



Plate VIII. 



& 2. Gcrablattina (Aphthoroblattina) sulcata, sp. nov. [Reg. Nos. 

 24505 & 24504. J (See p. 165.) Greater part of the right tegmen and 

 impression of the same. The under surface of the wing is shown. 



Horizon. — Gwernau Level of the Mynyddislwyn Vein, near Maes- 

 y-cwmmer (Monmouthshire). 



Fig. 3. Diagram showing the course of the veins in Gerablattina (Aphtlioro- 

 blattina) sulcata. 



Plate IX. 



Figs. 1 & 2. Archimylacris (Etohlattina) hastata, sp. nov. [Reg. Nos. 24501 & 

 24502.] (See p. 160.) Impression of and greater part of the 

 left tegmen. The proximal portion and the inner half of the apex of 

 the wing are missing. 



Horizon. — Gellideg Level of the Mjnyddislwyn Vein, near Maes- 

 y-cwmmer (Monmouthshire). 



Fig. 3. Diagram showing the course of the veins in Arcliimylacris (Etohlattina) 

 hastata. 



Plate X. 



Fig. 1. Left tegmen of Orthomylacris lanceolata, sp. nov. [Reg. No. 24511.] 

 (See p. 167.) A portion of the base of the wing and the whole of the 

 anal area are missing. 



Horizon. — Shales of the Graigola Seam, Clydach Merthyr Colliery, 

 Clydach Valley (Swansea Vale), Glamorganshire. 



2. Diagram showing the course of the veins in Orthomylacris lanceolata, 



3. Archimylacris sp. indet. [Reg. No. 24503.] (See p. 163.) A frag- 



mentary blattoid tegmen showing the middle third of the wing-area, 

 the rest being concealed under Cordaites leaves. The impressions 

 made by the attachment of shells of Spirorbis pusillus can be seen 

 upon the Cordaites leaf to the left. 



Horizon. — Gellideg Level of the Mynyddislwyn Vein, near Maes- 

 y-cwmmer (Monmouthshire). 



4. Right tegmen of Hemimylacris obtusa, sp. nov. [Reg. No. 24510.] 



(Seep. 154.) 



Horizon. — Four-Foot Seam of Swansea Gladys Colliery, a mile 

 east-south-east of Penller-gaer Church (Glamorganshire). 



5. Diagram showing the course of the veins in Hemimylacris obtusa, 



Q. Right hinder wing of Lamproptilia tenuitegminata, sp. nov. [Reg. No. 

 24509.] (See p. 170.) The extreme tenuity of the wing and the 

 almost straight inner margin are well seen in the figure. 



Horizon. — Level of No. 2 Rhondda Seam, If miles north-east of 

 Resolven Station (Glamorganshire). 



