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 Trilobites 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 Baini 
Salter. Homalonotus Herscheli Murch., H, quernus n. sp. HH. colossus n. sp. Homa- 
lonotus sp. 
Several of these, species were described by Salter, rans. 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. HH. perarmatus ni. sp. 
——— On Trilobites from Bolivia. 
Quart. Jour. Geol. Soc. London, vol. £2, 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 affinities 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. Palaontographical Society, 1906, 
part 1, pp. 1-28, plates 1-2. 
Agnostus fissus Lundgren, A. punctuosus Ang. (The Agnostus scarabacoides 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. 
Agnostus Davidis Salt., 4. exaratus Gronwall. (The A guostus 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 A. punctuosus.) 
Agnostus reticulatus Ang., A. pisiformis Linne, A. pisiformis var. obesus Belt, A. 
trisectus Salt., A. altus Gronwall, A. Barrandei Salt., A. rotundus Gronwall, A. nudus 
Beyr., 4. Eskriggei Hicks, A. Barlowi Belt. 
Section Limbati: (a) Regii Agnostus cambrensis Hicks. (b) Fallaces A gnostus 
integer Beyr., A. securiger n. sp. A. fallax Linnrs., A, rudis Salt. A. sidenbladhi 
Linnrs., 4. calvus n. sp.. 4. dux Callaway, A. Callavei Raw MS., 4. cyclopyge 'Tull- 
berg, A. obtusus Belt. 
Section Parvifrontes: Agnostus 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. 
