136 SAN DIEGC SOCIETY OF NATURAL HISTORY 
WHITFIELD (R. P.)—Continued 
and Hovey (KH. C.) Catalogue of the type and figured speci- 
mens in the Paleontological collection of the Geological Department 
American Museum Natural History. 
Bull. Amer. Museum Nat. Hist., vol. xi, 1900, 356 pp. 
Williams (H.) assisted by Breger (C. L.) The Fauna of the Chap- 
man Sandstone of Maine. 
U. S. Geol. Sur. Prof. Papers No. 89, 1916. 
The authors describe Homalonotus laticaudatus noy., distinguished from H. del- 
phinocephalus by its broader pygidium, very much like the Rheinish Devonic sp., H. 
crassicaeda Sandb. Homalonotus Vanuxemi Hall. Phacopidella Chapmani nov., com- 
pares P. anceps and P. mylanderi Dalmanites ? (Synphoria) a and b sp. nov. 
Ostracoda: Ctenobolbina ? cornuta. 
Zygobeyrichia nov. gen. Genotype Z. devonica Jones and Woodward, 1889. The 
new generic name is proposed for a group of large Beyrichidae that seems to represent 
a departure from the type from the Silurian stock. 
Zygobeyrichia apicalis nov. and Z. extrema nov. This is distinguished from Z. apicalis 
by its shorter and more gibbous form; and from species of Kloedenia it differs by the 
complete loss of the posterior lobe, the greater depth and length of the sulcus and the 
ventral prolongation, etc. 
Williams (N. Y.) An Eurypterid Horizon in the Niagara Forma- 
tion of Ontario. 
Canada Dept. of Mines Mus. Bull. No. 20, Geol. ser. No. 29, 1915, pp. 51, pls. 5. 
Wiman (Carl). Studien ueber das Nordbaltische Silurgebiet. 1. 
Geol. Instit. Upsala, No. 11, vol. vi, part 1, 1902, with 4 plates and map. 
Olenellus sp. Paradoxides sp. Arionellus balticus n. sp. Ellipsocephalus latus n. sp. 
Ellipsocephalus sp. 
Aparchites 2 Anderssoni n. sp.. A. 2 fennicus n. sp. Beyrichona gevalensis n. sp. B. 
faba n. sp. B.2 alta n. sp. Ostracod sp. Sellula fallax n. sp. Bradorona nitida n. sp. 
Indiana 2? minima n. sp. Hipponicharion Matthewi n. sp. 
Acerocare norvegicum Mbg. Geratopyge forficula Sars. Shumardia oelandica Mbg., 
S. bottnica n. sp. Trilobite. 
The author gives a bibliography of the literature on the Baltic Silurian, with quota- 
tions and figures from Roberg’s Dissertatio academica de fluviatili astaco ejusque usu 
medico, Upsala, 1715, p. 32; and refers his figure 1 to Megalaspis limbata Sars and 
Boeck; figure 2 to the pygidium of an Asaphus. 
— Ein Shumardiaschietfer dei Lanna in Nerike. _ 
Arkiv. for Zoologi K. Svenska Vet. Ak. ad Stockhélm, Bd. 2, No. 11, 1905. 
Apatocephalus pecten n. sp. Megalaspis planilimbata Ang., M. nericiensis n. sp. 
Niobe laeviceps Dalm. Niobe sp. Nos. 1 and 2. Symphysurus breviceps Ang. Ampyx 
brevicauda n. sp. Agnostus glabratus Ang., A. glabratus Ang. var. ingricus Fr. Schmidt, 
A. lentiformis Ang., A. sp. Shumardia nerictensis n. sp. Orometopus sp. 
Wilson (Alice BE.) and Mather (Kirtley F.) Appendix 11. Synopsis 
of the common fossils of the Kingston area. 
25th Ann. Rep. Ontario Bureau of Mines, 1916, pp. 45-66, plates 1-3. 
The authors illustrate as Black River fossils, Ordovician species. Bumastus Milleri 
(Bill.) and Isotelus gigas DeKay. Bathyurus extans Hall. Onchometopus simplex R. 
& N. 
