96 The Ohio Naturalist. [Vol. IV, No. 4, 



Female : Oval in outline, with 3rd, 4th and 5th segments anterior from 

 the p3-gidiuni prominent. JNIedian lobes fused to near the tip, diverging 

 widely to rounded tips, then truncated obliquely toward the second lobes ; 

 serrate or crenate on lateral margins. Inner lobule of second lobes serrate, 

 produced on inner margin to a rounded tip ; outer lobule reduced, triangular, 

 sharp-pointed, entire. Third lobe slightly produced, serrate. On the median 

 line, a chitinous band extends anteriorly to base of median lobes, expanding 

 to a bulb-like thickening. Chitinous bands extend obliquely toward this 

 from outer margins. Second lobes slightl}' thickened on inner margins. 

 Th& gland-spines are arranged as follows : 1,1,1, 1^2, 4 — 6 ; the first short 

 and Ijlunt. Second row of dorsal pores represented by i — 2 in anterior group; 

 3rd row by 3 — 4 in anterior and 4 — 5 in posterior group ; 4th row bv 3 — 5 in 

 anterior and 5 — 7 in posterior group. Median group of circiiiiiiienilal glaiid- 

 orijices, 7 — 10 ; anterior lateral, 15 — 26 ; posterior lateral, 14 — iS. 



Remarks : The writer has found this scale on Nyssa syhatica 

 at four widely separated locations in southeastern Ohio — Sugar 

 Grove, Fairfield county ; Newark, Licking county ; Somerset, 

 Perr}- count}' ; Quaker City, Guernsey count}'. 



Prof. R. A. Cooley has kindh' examined this species and pro- 

 nounced it a valid one. 



AsPiDioTus PiCEUS, n. sp. PI. VIII. Fig. 66. 



Scale of female : i.S — 2mm. in diameter, flat, often subelliptical to oval, 

 with subcentral exuviae ; black shading to dark gray toward mai^gin, having 

 the appearance of pitch covered with dust. The raised, shiny black, decidu- 

 ous first exuvia is .surrounded by an indistinct ring-like depression. When 

 rul)bed the second orange exuvia appears. The young scales appear not 

 unlike the young male scales of A. peniiciosiis. When removed a white 

 patch is left. 



Scale of male : Elliptical, imm. in length, black, with a distinct ring-like 

 depression surrounding the lustrous black exuvia, the posterior flap shading 

 to gray. 



Female: With one pair of lobes, well developed, prominent, broad, 

 notched midway on lateral margin, with outer corners well-rounded off 

 toward inner angle. Inner margins parallel, not close, bounded by large 

 chitinous processes, which extend somewhat reduced in density around the 

 outer margin to a denser process at outer base of lobe. Second and third 

 lobes rudimentary, sometimes with inner angle of second lobe .slightlv devel- 

 oped. Interlobular incisions broad and deep, bounded by elongated chitinous 

 processes, the inner usually the larger. There are two perforations anterior 

 to median lobes on a level with the ba.se of chitinous processes of first incision. 

 Between the median and second, and second and third lobes arc pairs of 

 di-pointed spine-like plates, two-thirds of length of median lobes. On the 

 dorsal surface there is a spine on each of the second and third lobes, and on 

 the ventral surface each lobe bears a .spine on the lateral margin laterad of dor- 

 .sal spine, also spines one-third and two-thirds of distance to penultimate seg- 

 ment. First row of dorsal pores (between first and second lobes) of 2; 



