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BIBLIOGRAPHY OF PALAOZOIC CRUSTACEA 
RAYMOND (Percy E)—Continued 
P. canadensis as its type, the author suggested, Am. Jour. Sci. vol. 19, 1905, p. 377, 
for the species of 4mphion (Pliomera), in which the cephalon has a denticulate frontal 
border, while the other species have smooth borders, 
Subgenus Nieszkowskia sp. ind. 
Subgenus Heliomera sol Billings. 
Sphaerocoryphe goodnovi Raym. ; 
Symphysurus Convexus Cleland, syn. Illaenurus columbiana Weller and Bathysurus 
? levis Cleland. 
The author gives illustrations of §. sicardi Berg. and Illaenurus quadratus Hall. 
—— Notes on Ordovician Trilobites, IIT. Asaphidae from the Low- 
ville and Black river. 
Ann. Carnegie Mus., vol. 7, No. 1, 1919, pp. 46-59, plates 15-16. 
In this paper the species Bathyurus longispinus, the hypostoma of B. extans, the free 
cheek of B. spiniger, and cephalon of Isoteloides homalonotoides are figured for the 
first time. 
The author illustrates Basilicus romingeri Walc., placing as syn. Asaphus Wiscon- 
sensis Wale. and Ptychopyge ulrichi Clarke. 
Under the genus Onchometopus, which may be readily distinguished from Jsotelus 
by the presence of a median tubercle on the glabella; the absence of a concave border 
on both cephalon and pygidium, the author illustrates O. simplex n. sp. 
Under the genus Jsoteloides the author places dsaphus homalonotoides Wale. 
The paper also includes notes on Isotelus gigas Dekay, I. maximus Locke. 
Notes on Ordovician rilobites, IV. New and old species 
from the Chazy. 
Ann. Carnegie Mus., vol. 7, pp. 60-79, plates 17-19, 1910 
The material on which this paper is based is two collections, the first by the author, 
and the second by Dr. Perkins, State Geologist of Vermont, from Isle La Motte, which 
was published in advance of the State Report. 
The author notes Eoharpes antiquatus Billings. Remopleurides canadensis Billings. 
The author divides the family Asaphidae Emmerich into two sections. Ogyginae 
nov. Asaphidae with hypostoma entire and $ segments in the thorax. Geologically 
the more ancient. 
Section 1—Ogygina with anterior limb of facial suture marginal. Ogygia, Niobe, 
Asaphellus, Symphysurus, Nileus, Vogdesia, Illaenurus. 
Section 2—Ogyginae with anterior limb of suture intra-marginal. 
——— Notes on parallelism among the Asaphidae. 
Trans. Royal Soc. of Canada, 3rd ser., vol. 5, sec. iv, 1912, pp. 111-120, plates 1-3. 
The author remarks: On the ontogeny of the Asaphidae very little is known; also 
that from the observation of various authors, the following may be looked upon as 
primitive characters in this family: 
1. Strongly segmented cephalon and pygidium. 
Absence of depressed borders. 
Long glabella. 
Eyes distant from the glabella. 
Facial suture marginal in front of the glabella. 
Pygidium and cephalon short and broad. 
Axial lobe narrow. 
Genal spines present. 
Judged merely by these characteristics Ogygopsis, Ogygiocaris, Ogygites, Asaphus, 
APNAMNFwWND 
