90) SAN DIEGO SOCIETY OF NATURAL HISTORY 
REED (F. R. Cowper )—Continued 
A new species of Cyeclus from the Carboniferous Limestone 
of Ireland. 
Geol. Mag., Decade v, vol. v, 1908, pp. 551-552. 
Cyclus simulans n. sp. 
On Phacops Weaveri, Salter. 
Geol. Mag., Decade v, vol. vi, 1909, p. 69. 
Refers only the Phacops MWeaveri Salt. Mong. Brit. Tril., plate iv, fig. 7, from 
Llandovery rocks of the Vortworth area. 
Rocks of the Toumakeady District. Vii Paleontological Ap- 
pendix. 
Quart. Jour. Geol. Soc. London, vol. 65, 1909, pp. 151-152, pl. 6. 
Illaenus Weaveri n. sp. closely resembles, I. esmarkii Schloth., I. aff. chudleighensis 
Holm., Pliomera aft. Fischeri Eichw., P. aff. Barrandei Billings. 
Cybele connemarica n. sp. Encrinurus sp. 
The author compares E. varicostatus Walc., and E. vannulus Clarke. It differs in the 
shape of the pygidium and course of the lateral ribs. Acidaspis sp. Apatocephalus sp. ? 
and Telephus hibernicus n. sp. also Symphysurus ? sp. 
The Cambrian fossils of Spiti. 
Memoirs Geol. Sur. of India, ser. xv, vol. 7, Memoir No. 1, Calcutta, 1910, 76 pp., 
plates 1-6. 
The author describes the following species of Trilobites: 
A gnostus spitiensis n. sp. 
There are considerable affinities between this species and 4. acadicus Hartt, also 
with 4. montis Matthew. 
Microdiscus: The author uses M. punctatus Salter for the type of the genus and not 
M. quadricosiatus Emmons, certainly the young of the Trinucleus from the Hudson 
River group; and remarks, “Should Pemphigaspis bullata Hall, prove to belong to this 
genus, this name will have to be adopted as Emmons founded his genus Microdiscus 
on a young of another genus.” 
Matthew Trans. N. Y. Acad. Sci., 1896, p. 236, remarks, as a general rule, in the 
genus Microdiscus the number of rings in the axis of the pygidium increase according 
to the geological age of the species. The majority of those of the Olenellus zone have 
but few rings (4 to 6), but in the Paradoxides zone species with many rings (8 to 10, 
even 12) are multiplied. 
He divides the genus into four Sections: With long glabella—Section 1, Lobatus; 
Section 2, Speciosus. With short glabella—Section 3, Dawsonia; Section 4, Eodiscus. 
The following Limalayan species are described and illustrated: 
Microdiscus Griesbachi sp. noy. The species agrees in general characters with 1. 
connexus Walcott, M. haimantensis sp. noy. Redlichia Noetlingi Redlich. 
‘The author remarks that this species is very closely related to R. nobilis Walcott. 
Indeed, it seems difficult to separate the new Chinese species R. chinensis Walcott, R. 
finalis Walcott and R. nobilis Walcott, by any strongly marked and constant features 
from the Indian species. 
Zacanthoides indicus sp. nov. Oryctocephalus Salteri sp. nov., O. cf. Reynoldi Reed. 
Under the genus Ptychoparia, Corda, 1847, the author remarks: 
There has been extraordinary diversity in the use of the generic name Ptychoparia, 
and in spite of the recent efforts of paleontologists to bring order out of chaos it can- 
not be said that uniformity of usage prevails at the present date. 
