THE 
AMERICAN GEOLOGIST 
Vol. VIII. OCTOBER, 1891. No. 4. 
BEECHERELLA A NEW GENUS OF LOWER HELD- 
ERBERG OSTRACODA. 
By E. O. Ulrich, Newport, K3'. 
About the beginning of this 3-ear I was greath' pleased at re- 
ceiving from Dr. C. E. Beecher, of New Haven, Conn., a not 
only bountiful but an exquisitely preserved lot of Lower Helder- 
berg Ostracoda ; and in a few days thereafter another series of the 
same, scarcely less extensive and excellent, from my well-tried 
friend, Mr. Charles Schuchert. To l^oth of these esteemed gentle- 
men 1 am under the greatest obligations because of their untiring- 
efforts to aid me in my studies of these minute fossils. The 
extreme liberality with which they have supplied me with spec- 
imens, the picking out of which has doulttless consumed much of 
their time, is conclusive evidence of an unselfish desire to advance 
science that is as unusual as it is commendable. 
These Lower Helderlierg specimens are all silicified and have, 
by the judicious use of acids, been freed from the hard, stony matrix 
that originally enclosed them. They are, therefore, unusually 
perfect in their preservation, and exceptionally adapted for 
detailed study. In these respects they are ))ut little, if at all, 
inferior to the beautiful things washed out of the Falls of the 
Ohio " Brj'ozoa lied,"' some of which I described lately (Jour. 
Gin. Soc. Nat. Hist. A'ol. XIII, 1800-91). 
In the " introduction " to that paper I made some remarks on 
the distribution of the known American paleozoic Ostracoda, 
stating also that numerous forms may l)e looked for in our Upper 
Silurian and Carboniferous deposits. The truth of this predic- 
