286 
The Ohio Naturalist. 
[Vol. II, No. 8, 
his expert opinion and valuable suggestions. Prof. Cockerell says, 
“ It appears to be a perfectly good species,” and adds, ” There is 
a Phenacoccus platani on Platanus in Europe. This differs from 
yoirr insect as follows : ( i ) It (female) is larger ; nearly 4mm. 
long. (2) It has a dorsal band. (3) It has the second antennal 
joint longer than the third (which is also the case in P. helianthi , 
P, solenopsis, P. wilmattae, etc. 
‘‘ Phenacoccus piceae has the same size as your species, but it 
also has the long second joint ; its color is orange or pink, and 
the male is pink or flesh color, with the apodema and scutellum 
red. It lives on Abies in Austria.” 
SOME ADDITIONS AND CORRECTIONS TO THE LIST OF LAND 
AND FRESH WATER MOLLUSCA OF TUSCARAWAS CO.. OHIO.* 
Dr. V. Sterki. 
After 53 add : Conulus chersinus Gld. Common. It seems 
to be distinct from fnlvus. 
64 is Limnaea kirtlandiana Lea, near rcflexa Say. 
After 66 add : Limnaea umbilicata Ad. Pools and ditches, 
scarce. 
67 is Limnaea caperata Say. It is very common in Summit 
and Portage Counties. 
82 and 86 are good species, according to Walker, but are not 
yet published. 
88 Physa gyrina Say is regarded as a distinct species by lead- 
ing conchologists ; 89 may be a small local form of it. 
After 88 add : Physa elliptica Lea, according to Walker. 
Pools and ditches ; not common. 
90 is Physa integra Say. 
91 may be glabra DeKay ; equals elongatina Lewis. So writes 
Mr. Bryant Walker, who is examining it. 
92 a. Campeloma rufa Hald. Not common ; ditches. A 
rather elevated form. 
105 to 145. vSiuce the list was written, C. T. Simpson’s Syn- 
opsis of the Naiades (Unionidae) has been published. In this a 
number of additional genera are recognized, and some specific 
names changed. It would take too much space here to enumer- 
ate the changes in detail ; the species in the list in themselves 
are correct except 143 and 144, which are mere forms of Auodonta 
grandis. 
After 146 add : Sphaerium solidulum Pr. Tuscarawas River 
and races. 
ELI th Annual Repc rt of the Ohio State Academy of Science, p. 'o. 
