OF WASHINGTON. 259 
were contributed by M. Bigot to Scudder's Nomen. Zool., that it might be 
worth while to record a very few corrections which I have incidentally 
noted, and more especially as the first of the lo-year supplements to the 
Nomenclator promised by the Smithsonian ought s-oon to be under way. 
The omission of some of these genera is rather remarkable from their 
prominence, one of them in fact being the type of a family. 
Additions. 
Bucculatrix, Zeller, Lep., 1848. Tin. 
Datana, Walker, Lepidopt. , 1855. Bomb. 
Macrophila, Gray, Lepidopt., 1862. Geom. 
Milyas, Walker, Lep., 1858. Noct. 
Mytilaspis, Targ.-Tozz., Horn., 1868. Cocc. 
Ochsenheimeria, Hueb., Lep., i8i6(?). Tin. 
Podisns, Herrich-Schaeffer, Hem. Het., 1853. Pentat. 
Psychomorpka^ Harris, Lep., 1839. Zyg. 
Pnlvinaria, Targ.-Tozz., Horn., 1868. Cocc. 
Stetiobotkrus, Fischer, Orth., 1853. Acrid. 
Corrections. 
Diaretus, Fb'rst., Hem., 1862. M. read Hym. 
Limnopkiltts, Burm., Neur. , 1869. A. read 1839. 
Megalopterus, Ramb., Neur., 1842. A. read Megaloprepn^. 
Platysthetus, Mannh., Col., 1830. S. read Platystethus. 
PolograpJnis, Erichs., Col., 1836. A. read Polygraphus. 
Mr. Marlatt then presented the following note : 
ABUNDANCE OF OAK-FEEDING LEPIDOPTEROUS LARV, IN THE FALL OF 
1889. 
By C. L. MARLATT. 
The season of 1889 was apparently a most favorable one for Lepidopterous 
larvae in the District, as shown by the abundant finds on several collecting 
trips to the Virginia side of the Potomac and in the neighborhood of Cabin 
John's Bridge. Larvae were especially abundant during late summer and 
early fall, and while a few species predominated the variety was also un- 
usually large. The result of an hour or so's collecting near Cabin John's 
Bridge on September 29, without the aid of net, umbrella, or any appliance, 
but simply by " hand-picking," may be given to illustrate the richness of 
the field, even late in the season. The list comprises merely Macro-Lepi- 
dopterous larvae, and is limited to those found on oak. In addition to 
those given, were found on oak two species of saw-fly larvx. Dipterous 
and Cynipid galls, and a considerable number of Micro-Lepidopterous 
larvae. 
Hyphantria cunea Common. 
Halisidota maculata 
