50 SAN DIEGO SOCIETY OF NATURAL HISTORY 
LAKE (Philip)—Continued 
Warder’s species Ceratocephala goniata belongs to the same group as Acidaspis 
vesiculosa Barrande. 
Beyrich’s Odontopleura Brightii is identical with 4. quinquespinosa Salter MS. 
—— The Trilohites of the Bokkeveld Beds. 
Ann. South African Mus., vol. 4, part 4, 1904, pp. 201-220, 5 plates. 
Phacops pupillus n. sp.. P. arbuteus n. sp. P. crista-galli Woodw., P. africanus 
Salter, P. ocellus n. sp., P. impressus n. sp., P. (Cryphaeus) caffer Salter. Phacops sp. 
Dalmanites lumatus n. sp. Dalmanites sp. Proetus malacus n. sp. Typhoniscus Baint 
Salter. Homalonotus Herscheli Murch., H. quernus n. sp., H. colossus n. sp. Homa- 
lonotus sp. 
Several of these species were described by Salter, Trans. Geol. Soc., series 2, vol. 
vii, 1856; also by Henry Woodward, Quart. Jour. Geol. Soc., vol. xxix, 1873; and by 
Dr. Frech, who describes a Homalonotus which he believed to be new, in Lethaea 
Geognostica Th. 1, Bd. ii, Leif. 1, 1897, p. 218. H. perarmatus n. sp. 
On Trilobites from Bolivia. 
Quart. Jour. Geol. Soc. London, vol. 42, 1906, pp. 425-430, plate XL. 
Peltura sp. Symphysurus apolonista n. sp. Trinucleus boliviensis n. sp. Ogygia. 
Phacops cf. arbuteus Lake. Dalmanites Paituna H. & R., D. maecuruia Clarke. Dal- 
manites sp. 
The earlier genera show afhnities with the contemperaneous European fauna. 
The Devonian species are much more closely allied to those of South Africa and 
North America. 
—— The Cambrian Trilobites. 
A Monograph on the British Cambrian Trilobites. Paleontographical Society, 1906, 
part 1, pp. 1-28, plates 1-2. 
Agnostus fissus Lundgren, 1. punctuosus Ang. (The 4d gnostus scarabaeoides Salter, 
as described by Hicks, is clearly only a flattened and imperfect specimen of this species.) 
The Agnostus scutalis Hicks. Quart. Jour. Geol. Soc., vol. 28, pl. v, f. 9, is a beautiful 
tail of 4. punctuosus Ang. 
A gnostus Davidis Salt.. 4. exaratus Gronwall. (The A gnostus scutalis as described 
by Hicks, Quart. Jour. Geol. Soc., vol. 28, p. 175, pl. v, figs. 12 and 13, and probably 
figs. 11 and 14, not figs. 9 and 10, includes at least two distinct species. The de- — 
scriptions of the heads corresponds with Gronwall’s species, but the tail is apparently 
based on a specimen of 4. punctuosus.) 
A gnostus reticulatus Ang., A. pisiformis Linne, A. pisiformis var. obesus Belt, A. 
trisectus Salt., 4. altus Gronwall, A. Barrandei Salt., 4. rotundus Gronwall, A. nudus 
Beyr., 4. Eskriggei Hicks, A. Barlowi Belt. 
Section Limbati: (a) Regii Mgnostus cambrensis Hicks. (b) Fallaces A gnostus 
integer Beyr., A. securiger n. sp., A. fallax Linnrs., A. rudis Salt. 4. sidenbladhi 
Linnrs., 4. calvus n. sp.. 4. dux Callaway, 4. Callavei Raw MS., A. cyclopyge Tull- 
berg, 4. obtusus Belt. 
Section Parvifrontes: A gnostus truncatus Brogger. 
— A Monograph of the British Trilobites. 
Part 2, Paleontological Society, 1907, pp. 29-48, plates 3-4. 
A gnostus incertus Brogg. Microdiscus Salter (non Emmons). 
The genus Microdiscus was first established by Emmons Am. Geol., vol. 1, pt. 2, 
p. 116, pl. 1, fig. 8, for a small trilobite to which he gave the name of Microdiscus 
quadricostatus, which Dr. Lake refers to Trinucleus and takes Salter’s Microdiscus 
punctatus for the type of the genus. 
