BIBLIOGRAPHY OP PAL.V.OZOfC CRUSTACEA " 7o 



RAYMOND (Percy E) — Continued 



P. ianadcnsis as its type, the aiitlior siisrtiestetl, Am. Jour. Sci., \oI. 19, 19o5, p. 377, 

 for the species of Amphion ( Fliomcra) , in which the cephaion lias a lieiiticulate frontal 

 border, while the other species have smooth borders. 



Subgenus Nieszkowskia sp. ind. 



Subgenus Heliomera sol Billings. 



Spliaerocoryphe goodno-vi Raym. 



Symphysnrits (jtnvextis C^lelaiid, syn. lllanmnis cnlum}>'uuia \\'eller and Btitliysurus 

 ? le-iis Cleland. 



The author gives illustrations of S. shiirdi Berg, and Illacinirns rjinulniliis Hall. 



Notes on Ordoviciaii Trilohitcs. ITI. Asniiliidac from the Low- 



villc and Hlaek river. 



Ann. Carnegie Mus., vol. 7, No. 1, 1910, pp. 46-59, plates 15-16. 



In this paper the species Botliyurus lo/igispi/ius, the hypostoma of B. extans, the free 

 cheek of B. sptniger, and cephaion of Isoteloides liomalonotoidis are figured for the 

 first time. 



Tlie author illustrates Basiliciis romiiigrri W'alc, placing as syn. Asaphiis lliscori- 

 sensis \\'alc. and I'lydiopyge ulr'ichi Clarke. 



Fnder the genus Onchometopus, which may be readil}' distinguished from Isotelus 

 by ihe presence of a median tubercle on the glabella; the absence of a concave border 

 on both cephaion and pygidium, the author illustrates (). simplex n. sp. 



Under the genus Isoteloides the author places Asaplius homdloitotoides Wale. 



The paper also includes notes on Isotelus gigas Dekay, /. maximus Locke. 



■ Notes on Ordnvician 'l^rilohites. I\'. 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 Eoliarpes anti'jitiitus Billings. Remopleurides ( anndensis Billings. 



The author divides .the family Asaphidae Emmerich into two sections. Ogyginae 

 nov. Asaphidae with hypostoma entire and 8 segments in the thorax. Cjeologically 

 the more ancient. 



Section 1 — Ogygina with anterior limb of facial suture marginal. Ogygia, Niobe, 

 Asaphellus, Symphysurus, \ileus, Vogdesia, Illaenurus. 



Section 3 — Ogyginae with anterior limb of suture intra-marginal. 



Notes on parallelism amoii.o' ^jk. Asa|)lii(lae. 



Trans. Royal Soc. of Canada, 3rd ser., vol. 5, sec. i\-, 1912, pji. 111-120, plates 1-3. 



The author remarks: On tlie ofitogen\ of the Asaphidae very little is known; also 

 that from the observation of various authors, the following nia\- be looked upon as 

 piirniiive characters in this family: 



1. Strongly segmented cephaion and i\\gidium. 



2. Absence of depressed borders. 



3. Long glabella. 



4. Eyes distant from the glabella. 



5. Facial suture marginal in front of the glabella. 



6. Pygidium and cephaion short and broad. 



7. Axial lobe narrow. 



8. (I'enal spines present. 



Judged merely h\ these characteristics Ogygopsis, Ogygiocarls, Ogvgites, Asaphus, 



