BIBLIOGRAPHTY Of PAL.RBOZOIC CRUSTACKA it 
RAYMO ND (Percy E)—Continued 
The author considers Pseudoasphus Schmidt as the next step in the development from 
Basilicus and Ogygites. 
The author is in error in his remarks that Brongniart applied the name of Ogygia 
to O. buchit and O. dilatata with forked hypostoma. Brongniart applied the name to 
an Asaphus. The second species described by Brongniart, according to Tromelin and 
Lebesconte, iid, p. 34, has the entire hypostoma characteristic of O. desiderata Barr. 
Syst. Sil de Bohéme, vol. 1, Suppl., pl. 4, fig. 3. 
The author illustrates Brachyaspis notans Billings. Ogygites canadensis Chapman. 
Remarks: this species has a forked hypostoma, and should not be included under the 
genus. 
Plate 2—Onchometopus susae Whitfield. Braehyaspis alacer Bill, B. altilis Raym. 
n, sp. Megalaspis goniurus Bill. Isotelus gigas DeKay. Nileus perkinsi Raym. 
Plate 3—Nileus perkinsi Raym. Onchometopus obtusus Wall. Bumastus globosus 
Bill. Nileus affinis Bill. Symphysurus i!laeonoides Bill. Isotelus gigas DeKay, and 
Hemigyraspis sp. 
——— Some changes in the names of genera of Trilobites. 
The Ottawa Naturalist, vol. 26, Feb., 1913. 
The author remarks on the ten new genera described by Jaekel in Zeit. d. Deutsch 
Geol. Ges., vol. 61, pp. 380-401, 1909, should be rejected and referred to older names 
as follows: 
Paragnostus to Condylopyge Corda, Dichagnostus to Pleuroctenium Corda, Mesag- 
nostus to Peronopsis Corda, Miagnostus to Lejopyge Corda, Leiagnostus to Phalacroma 
Corda, Metagnostus to Arthrorhachis Corda. These six new genera the author rejects. 
The author would reject Microdiscus Emmons, because it was founded on a young 
specimen of the genus Trinucleus, and substitutes Eodiscus. This would overlook 
Salter’s Microdiscus—the generic name should read Microdiscus Salter (not Emmons). 
Raymond, who examined the type specimen of Pemphigaspis bullata Hall, does not 
place it with Microdiscus, as suggested by Walcott. 
The author is in favor of using Green’s generic name Cryptolithus for Murchison’s 
genus Trinucleus. This generic name has long been used by Bronn, Goldfuss, Emm- 
rich, Angelin, Foerste and Vogdes. Eaton’s genus Nuttainia of 1832 not used. Dr. 
Jacob Green claimed priority in his Monograph of Trilobites. The generic name was 
first described in Am. Jour. Geol., June, 1832. 
The author uses Ogygites, Tromelin and Lebesconte, for primitive Asaphinae, with 
annulated pygidia and forked hypostomata, and Ogygiocaris Angelin, for Ogygia 
Buchi and O. dilatata. 
The author favors the adoption of Goldius for Brontes and Bronteus. Tor Acaste 
Goldfuss, the author takes the generic name Phacopidella. Reed, 1906, as Leach in 
1811, used the first genus for a genus of Cirripedes. Arges was used by Haan in 
1835, and the author uses Ceratarges Gurich, for the generic name; also Aulacopleura 
Corda, in place of preoccupied generic name Arethusina Barrande. 
Notes on Cyelosytoides. 
Notes on some new and old Trilobites in the Victoria Memorial 
Museum, Description of some new Asaphidae. Two new species of 
Tetradium. Revision of the species which have been referred to the 
genus Bathyurus (preliminary paper). 
Bull. No. 1, Victoria Memoria] Museum, October 23, 1913, 80 pp., with 7 plates. 
The author remarks on Harpes dentoni, which he refers to the new genus Eoharpes 
from a more, or rather poorly preserved specimen, that it has from 18 to 16 segments 
