64 OHIO STATE ACADEMY OF SCIENCE. 
Remarks: On palm, Areca lutescens, in Ohio State Univer- 
sity Conservatory. 
ASPIDIOTUS OSBORNI Newell & CkKIl. 
A, osborni New. & Ckll., Rep. Ia. Acad. Sci., v, p. 229 (1898). 
Just before going to press this species was identified on twigs 
of Quercus alba, collected at Cleveland, Ohio, July 18, 1903, by 
the author. The grouped-gland-orifices in the Ohio specimens are 
more numerous than originally deseribed. 
ASPIDIOTUS OSTREAEFORMIS Curtis. 
Fig. 3. 
A_ ostreaeformis Curt. (Ruricola), Gard. Chron., iii, p. 805 (1843). 
A. ostreaeformis Felt, Bull. 46, N. Y. St. Mus., pp. 323, 352 (1901). 
A. ostreaeformis Panks, Bull. 34, n. s., Dep. Ag., p. 18 (1902). 
Scale of female: 1—1.5 mm. in diameter, dark gray, lighter near 
margin, somewhat convex; exuviae large, eccentric, yellowish to 
orange. 
Scale of male: Similar in color to scale of female, smaller with 
submarginal exuvia. 
Female: Median lobes short and broad, notched on outer margin 
and rounded, similar to A. ancylus, but not so prominent, scarcely 
converging, with inner margins thickened; inner angle of second lobe 
produced into a blunt point; rudimentary third lobe represented by a 
small angular prominence, or absent. Long, straight, subequal, chiti- 
nous processes bound the second and third incisions. Plates very 
inconspicuous, sometimes furcated; two between median lobes and 
two in each incision. On the ventral surface, a spine is borne at the 
lateral base of each lobe and one about half-way to the penultimate 
segment; the dorsal spines are longer and situated just mesad of the 
corresponding ventral spine. Dorsal pores in four rows as follows: 
ist (between first pair of chitinous processes) of 2-3; 2nd, 5-6 and after 
a break 2-3 more; 3rd of 7-8; 4th, a marginal row of 2-4 and a group of 
5-6 near the penultimate segment. The dorsal pores vary greatly in 
number and position, but there is a certain characteristic arrangement. 
Median group of circumgenital gland-orifices, 5-8; anterior and poster- 
ior lateral of about 10-i2 each. Anal orifice small, rather distant from 
margin and embraced by the inner margins of median lobes. 
Remarks: This is an European species, which has been in- 
troduced and is rather conmon in sections of some states, however 
not common in Ohio. ; 
