66 SAN DIEGO SOCIETY OF NATURAL HISTORY 
Ohern (D. W.) and Maynard (T. P.) Trilobites. 
Maryland Geol. Sur. Lower Devonian, Baltimore, 1913, pp. 489-512, pl. 89-94. 
The authors describe and illustrate the following species: 
Proetus pachydermatus Weller, P. cf. protuberans Hall. Cordania cyclurus Hall 
and Clarke. Cyphaspis Australis n. sp. Ohern. Calymmene camerata Conrad. Homa- 
lonotus Szvartzi n. sp. Ohern, H. Vanuxemi Hall. Phacops Logant Hall. Dalmanites 
aspinosa Weller, D. Keyserensis n. sp. Swartz, D. multiannulatus n. sp. Ohern, D. latus 
n. sp. Ohern, Dalmanites (Synphoria) stemmatus Clarke, D. (Corycephalus) dentatus 
Barrett, D. micrurus Green, D. (Chasmops) anchiops Green, D. (Hausmannia) pleurop- 
tyx Green, D. herkleyensis n. sp. Swartz. 
Olin (EK.) Om de Chasmopskalken och Trinucleusskiffern motsvarande 
bildningarne i Skane. 
Lund Geologiska Faltklubb, Ser. B, No. 1, 1906, 79 pp., with 4 plates. 
Acidaspis Tornquisti n. sp. A2glina rediviva Barr. A gnostus cingulatus n. sp., A. 
trinodus Salt. Ampyx globifrons n. sp., 4. gratus Barr., A. Portlocki Barr., A. rostratus 
Sars., 4. tenellus Barr. Areia suecica n. sp. Asaphus ingens Barr. Calymmene dila- 
tata Tulb., C. incerta Barr., C. pulchra Beyr., C. trinucleina Linrs. Chirurus insignis 
Beyr., C. pectinifer Barr., C. subulatus Linrs. Cybele cf. Grewingki F. Schmidt. 
Dindymene cornuta n. sp., D. pulchra n. sp., D. sp., D. spinulosa n. sp., D. venusta n. 
sp. Dionide euglypta Ang. Holometopus cf. aciculatus Ang. Illaenus Angelini Holm., 
I. longifrons n. sp. I. megalopthalmus Linrs. Lichas laxatus McCoy, L. quadrispinus 
Ang. Phacops ecclesiatica n. sp., P. eucentra Ang., P. macroura Sjogr., P. recurva 
Linrs., P. sandbyensis n. sp. Phillipsia parabola Barr. Proetus scanicus n. sp. Pseudo- 
sphaerexochus laticeps Linrs., P. Ravini n. sp. Ptychopyge glabrata Ang. Remopleuri- 
des latus n. sp., R. radians Barr., R. sexlineatus Ang. Sphaerexochus sp. Staurocephalus 
clavifrons Ang. Stygina latifrons Port. Symphysurus superstes n. sp.  Trinucleus 
Bucklandi Barr., T. ceriodes Ang., T. elliptifrons n. sp.. T. latilimbus Linrs. 
Pack (Fred J.) Cambrian fossils from the Pioche Mountains, Nevada. 
Jour. Geol., vol. 14, pp. 290-302, plates 1-3, 1906. 
Bathyuriscus’ howelli Walcott, B. productus H. & W. Ptychoparia piochensis Wal- 
cott, P. Kempi n. sp. This species is an allied form of P. subcoronata, but has a pecu- 
liar boss in front of the glabella. 
Zacanthoides typicalis Walc., Z. grabaui n. sp., differs from Z. typicalis in general 
shape of the head, the frontal margin and the genal spines. 
Packard (A. 8.) The Palwontological History of Trilobites, ete., as 
opposed by Barrande to the evolution theory. 
Amer. Naturalist, vol. 8, 1874, p. 439. 
~~ On the systematic position of the Trilobites. 
Proc. Amer. Assoc., 1893, p. 365. 
Refers the Trilobites to a separate class, and regards them as being an older, more 
primitive group than the Crustacea. Hence, the Trilobites probably were the first to 
originate from the annelid worms, while the crustacea arose by a separate line of 
descent. 
Partridge (EH. M. Miss). Echinocaris Whidbornes (Jones & Wood- 
ward) and Echinocaris sloliensis n. sp. 
Geol. Mag., Dec. 4, vol. 9, 1912, pp. 307-308, plate 17. 
The last species much resembles E. sociales (Beecher) by the carapace and is much 
longer in proportion to its width. 
