470 SAMUEL H. SCUDDER ON THE 



2. Scutinoblattina intermedia. 

 PI. 42, fig. 4. 



ScuMnoblattina intermedia Sciidd., Proc. Acad. Nat. Sc. Philad., 1885, 111. 



This species resembles the last, but is not marked by any dots, and the anal area, while 

 shorter, shows no emargination of the border at its extremity; the anal veins are very 

 close, parallel to the inner margin, and terminate not on the margin, but on the anal fnr- 

 i-ow. It further diflters in that the externomedian branches are considerably more longitu- 

 dinal than those terminating on the costal margin. 



Length of wing, 7 mm.; breadth, 2.75 mm. 



Two specimens, one with its reverse, Nos. 97 and 98, 99. 



3. Scutinoblattina recta. 



PI. 42, ligs. 3, 16. 



ScvtlnoUattina rcda Scudd., Proc. Acad. Kat. Sc. Philad., 1885, 111. 



This species, the smallest and most abundant of all in the triassic rocks, is rather slen- 

 derei- than the others, and has the sui-fixce finely reticulated. The mediastino-scapular 

 and externomedian veins run side by side in perfectly straight lines fi'om the middle of 

 the base to the middle of the tip, the branches, very few in numbei", parting similarly on 

 the two sides. The costal is more arched than the inner margin, and where they can be 

 made out, the one or two anal veins seem to run to the margin, but all the veins on the 

 wing are exceedingly obscure. 



A couple of stones, one with its reverse, show the prothoracic shield to have been very 

 nearly circular, slightly broader than long, scarcely more produced in front than behind, 

 uniformly and considerably domed, the margins entire and in no way displayed. 



Length of wing, 6.3 mm.; breadth, 2.1: mm.; length of prothoi-acic shield, 2.9 mm.; 

 breadth, 3.1 mm. 



Four wings have been found, three of them with reverses, N^os. 37, 85 and 86, 87 and 

 88, 89 and 90, besides two prothoracic shields, one with its reverse, Nos. 38 and 81, 83. 



HEMIPTERA. 



Cekcopidae Leach. 

 The remaining insects appear to fall in tliis group of homopterous insects. 



Ceecopyllis (dim. of Cercojns) gen. nov. 



Under this name are grouped the very few insect forms found in these beds which are 

 not cockroaches. They are very small and appear to be quite unlike anything found 

 in mesozoic or older deposits. Hardly anything besides wings are known, and these in 

 all cases fore-wings with extremely simple neuration, consisting of a simple radial vein 



