1910.] NATURAL SCIENCES OF PHILADELPHIA. 425 



maculation from raw umber to seal brown. Head entirely or with at 

 least dorsal portion of face darker than remainder and varying from 

 ferruginous to blackish; antennae varying in conformity with general 

 coloration; supra-antennal and ocellar spots pale yellow. Pronotum 

 with maculation confluent with caudal margin, confluent with or 

 separated from cephalic margin, 10 lateral portions varying from buff to 

 ochraceous. Tegmina with costal field subhyaline, pale yellowish. 

 Abdomen seal brown dorsad, margined laterad with buffy; venter 

 similar to dorsum of abdomen but slightly paler, margined in similar 

 fashion. Limbs pale ochraceous, spined and lined with dark brown. 



Measurements. — 9. Length of body, 20-22 mm.; length of pro- 

 notum, 4-5; greatest width of pronotum, 5.6-6.1; length of tegmen. 

 21-24.5; greatest width of tegmen, 6-7. 



9. Length of body 13.5-17 mm.; length of pronotum 4.5-5; 

 greatest width of pronotum 5.5-7.2; length of tegmen 12.5 ;" greatest 

 width of tegmen 5-5.5. 



Distribution. 12 — The fact that /. pensylvanica and /. incequalis are 

 really geographic races of the same species merging one into the other, 

 makes the delimiting of the range of either one quite difficult, and it 

 has been necessary to restrict our consideration to material actually in 

 hand, records based on the same and references bej^ond question on 

 account of the occurrence of but one of the two forms in that region. 

 From such evidence /. pensylvanica is known to range from Quebec 

 Province, Canada (Montreal and Abbotsford) south to North Carolina 



10 Occasionally the maculation is obsoletely divided medio-longitudinally by 

 obscure ochraceous-rufous. 



11 The smallest specimen available has tegmina as long as the largest. The 

 tegmina range in size down to 10.5 mm. 



12 Owing to the close relationship of Ischnoptera pensylvanica and /. p. in- 

 osqualis and the intergradation of the same in the central West, it is extremely 

 dimcult and sometimes impossible to properly place references. The references 

 here given cannot be satisfactorily located without securing the material on 

 which they are based, this being impossible in a number of cases. 



1787. [Blatta] cincta Fabricius, Mant. Ins., I, p. 226. [America.] 



1862. Platamodes pennsylvanica Scudder, Boston Journ. Nat. Hist., VII. 



p. 417. (Part.) [Indiana; Maryland.] 

 1865. Blatta pennsylvanica Thomas, Trans. 111. State Agric Soc, V. p. 440. 



[Illinois.] 

 1872. Platamodes pennsylvanica Glover, 111., N. A. Ent., Orth., pi. I, figs. 



1 and 3. 

 1891. Ischnoptera pennsylvanica McNeill, Psyche, VI, p. 78. [Southern 



Illinois.] 

 1894. Ischnoptera pennsylvanica Garman, Sixth Ann. Rep. Kentucky Exp. 



Sta., p. 10. [Kentucky.] 

 1894. Ectobia flavocincta Garman, ibid., p. 10. [Lexington, Kent.] 

 1904. Ischnoptera pennsylvanica Mead, Ohio Nat., IV. No. 5, p. 111. [Cedar 



Point, Ohio.l 



