116 SAN DIEGO SOCIETY OF NATURAL HISTORY 



Wade (A.) On the Llandovery and associated roeks of Northeastern 

 ^lontgonieryshire. 



Quart. Jour. Soc. London, vol. 67, No. 267, 1911, p. 415, plates 33-36. 



Notes on the Pglasontology of the area 1 — Trilobita. 



The author describes the following species: 



Triniiflcus intrrinrdius sp. nov. 



Refers T. conccntr'tcus H/all, Pal. N. Y., vol. 1, p. 349, pi. 65, figs. 4a-4c; also p. 

 255, pi. 67, figs, la-h, to the new species. 



Dionide sp. 



Ostracoda Melanella n. gen. 



The author gives the following description of the genus: 



Carapace small; equivalves moderately convex, subcircular, rather flattened an- 

 teriorly; hinge straight; valves with a small, faintly raised horseshoe ridge confined 

 to the posterior half, enclosing a small semicircular sulcus; edges simple. 



The genus is closely allied to Joneseila of Ulrich. 



Melanrlla hcmidiscus gen. et sp. nov. 



Primitiella unicornis Ulrich. Primitia Vhiclii Jones, /'. tutnidiila Ulrich. Clcnobolina 

 cf. ciliata Emmons. BoUa lata V. & H. Krausclla arciinta Ulrich. 



Walcott (Charles D.) Description of new genera and species of 

 fossils from the Middle Cambrian. 



Proc. U. S. Natl. Mus., vol. 11, 1888, Washington, 18S9, pp. 441-446. 



The author includes under the genus Dorypygr tlie following species: 



D. ric/ifofeni with Olenoidcs ncvadensis, (). quadriceps, O. 'wasathchensis and 0. 

 curticei — a new species which he illustrates on p. 444, fig.; also the new genus Karlia, 

 named in honor of Dr. Karl Rominger. 



Genotype Knrlia minor n. sp. 



The author refers Menoceplialus salteri Rominger, 1887, Proc. Acad. Nat. Sci., pt. 1, 

 p. 16, pi. 1, fig. 6, to a new species: Karlia stephenensis. 



The Bathyurus Rominger, Proc. Acad. Nat. Sci. Phila., pt. 1, pi. 18, fig. 8, is referred 

 to Bathyuriscus (Kootenia) da^vsoni n. sp. 



A new genus, Ogygopsis, is founded on the species Ogygin Klotzi Rominger, it dif- 

 fers from Ogygia in having a well-defined ocular ridge, and in the narrow palpebral 

 lobe. 



Camhrian Fossils, YelloAvstone National Park. 



Mong. U. S. Geol. Survey, No. 32, part 2, pp. 440-478, plates, 1899. 



Agnostus interstricfus White, A. hidens H. & W., A. lumidnsus H. k W. 



Ptychoparia Penfieldi n. sp., P. antiquata Salt., P. (Enloma) affinis Wale, P. 

 Llanoensis Wale, P. sp. Crepicephalus Texanus Shumard, P. (Lonchocephalus) hamu- 

 lus Owen, P. (Lonchocephalus) JVisconsensis Owen, P. ? diadcmata Hall. 



Arionellus levis n. sp. Arionellus sp. Liostracus parvus n. sp. Solenoplcura Jf'cedi 

 n. sp. Zacanthoides sp. Bathyuriscus sp. 



Precamlirian fossiliferons formations. 



Bull. Geol. Soc. Amer., vol. 10, pp. 189-244, 1899, plates. 



Beltin Danai n. gen. et sp. ; also figures of Pterygotus, Eurypterus, Slimonia and 

 St>lonurus for comparison. 



The author refers to the genus Beltina certain fragmentary remains of a crustacean 

 collected from the calcareous Greyson shales of Montana, and remarks, as far as can 

 be judged from what we now know of it, is referable to the Merostomata. 



