Harris Invertebrate Fossils. — Schuchert. 133 
a total of twenty-five specimens of Rhaphanocr^inns sculptus, 
Dendrocrinus casei, Composocrimts iniauiiensis, and Xcno- 
criiiits bacri, all of which are rare species. Of Xenocj'inm 
pcni'cilliis, Mr. Harris secured the entire colony, and speci- 
mens now in other museums than the National Museum are 
a part of the original lot. It is, without doubt, the most select 
and extensive series of Cincinnatian crinoids ever assembled. 
The trilobites are also well represented, since more than 
306 specimens are present illustrating the genera Acidaspis, 
Cerauriis, Dalinanitcs, Isotclus, Lichas, Proefus, Triarthriis, 
Trinuclciis and more than 2,000 specimens of Calyiiiene calli- 
cephala. 
Another very valuable feature of ]\Ir. Harris' work was 
the great care he gave to cleaning and labelling the material, 
which enabled the writer and Mr. R. S. Bassler to locate ac- 
curately all the specimens in the twelve zones of the Cincin- 
natian group as recently defined by Mr. John M. Nickles. 
The collection as now recorded will have a permanent value, 
not only to the morphologist, but to the detailed stratigrapher 
as well. 
From the celebrated crinoid locality at Crawfordsville, 
Indiana, there are several hundred fine specimens and a small- 
er but good series of crinoids from Burlington, Iowa. Other 
places well represented are Waldron, Indiana, and the famous 
Carboniferous plant locality of Grundy county, Illinois. From 
these localities there are about 180 species. 
Paleontologists have not failed to recognize Mr. Harris' 
work, and in the record we find that S. A. iSIiller named four 
species in his honor and James and Ulrich one each. These 
belong to the genera Compsocrinns, Cyathocrinns, Lichas, 
Palaeastcr, Helopora, and CalloporcUa. 
The collection of fossils as now arranged in the Xational 
Museum is divided into two series, an exhibition and a study 
series. The exhibition series has about 3,400 of the best and' 
most showy specimens, mounted on 365 tiles or blocks, while 
the study collection is kept in 56 large drawers, and is not 
on exhibition. Together both series arc recorded on the 
Museum register under 1.250 numbers, representing about 
750 species and 17,000 specimens. Of these, 26 species are 
represented by cither the original type or figured individuals. 
