BIBLIOGRAPHY OF PAL^.OZOIC CRUSTACEA 125 



WALCOTT (Charles D.)— Continued 



Genus Solenopleura Angelin, 1854. 



Walcott figures pi. 17, figs. 12, Solrnoplcura holotnetopa Aiij^eliii for comparison, and 

 describes as new tlie following species: 



Solenopleura agrio Wale, S. hcroe Wale, iV. cluilcon Walc, ,S'. iiilermcdia Wale, 5. 

 pauperata Wale, S. sp. undt. 



Genus Chuangia Walcott, 1911. Cienotype Ptychopar'ia bat'ui Wale 



The genus proposed for a group of Upper Cambrian Trilobites in which the cephalnn 

 has a truncato-conical or subquadrangiilar glabella; a narrow concave frontal limb 

 and smooth test. 



7^hree species are described: Chuangia nitida, ('.. nuiis and <",'. jratnenta. 



Genus Menocephalus Owen, 1852. 



Doctor Owen proposed this genus for Trilobites having a highly convex hemispherical 

 glabella, with a narrow border and broadly rounded front cheeks, tumid surface pus- 

 tulate. 



The genotype of Menocephalus was destroyed bv fire man\' vears ago. 



l^r. Walcott does not include in the genus the species described by Billings under 

 tiie names of Menocephalus sedg^virki and M. glahosus, which he refers to Soleno- 

 pleura, and remarks that M. salteri Devine, is the type of an undescribed genus. 



The author describes Menocephalus ahderus, the Solenopleura ahdcrus Wale, 1905, 

 M. acanthus Wale (Solenopleura acantha Wale 1905), M. acerius Wale, M. ocidalia 

 (Solenopleura acidalia Wale, 1905), ;1/. acis Wale and M. adineta Wale, .1/. agave 

 VN'ale, M. depressus Wale, il/. sp. undt. 



Crenus Levisia Walcott. CJenotype Agraulos agenor Wale 



In this genus the cranidium is strongly convex, glabella truncato-conical, tumid and 

 with only a trace of glabella furrows; occipital ring narrow, at the sides broadening 

 rapidly toward the center, convex and extending backward into an obtuse spine; 

 frontal limb narrow; fixed cheeks tumid, one-half as wide as the glabella and with 

 small palpebral lobes midwa}' of their length; postero-laleral limbs rather short and 

 marked by deep, narrow intermarginal posterior furrow, that separates a narrow, 

 rounded margin. The author describes Le-visia adrastia ^^'^alc. (under the genus of 

 Menocephalus Wale, 1905), I.ev'isia agenor Wale under the genus Agraulos Wale, 

 1905) and f.evisia nasuta Wale, Lei'isia richardsou'i NN'ale The last two species are 

 from the Upper Cambrian at Point Levis, (^anada. 



Genus Ptychaspis Hall, 1863. (Jenotyj-.e Dikelocephalus miniscoensis Owen. 



The author describes from China, Ptychaspis hauho Wale, P. hella Wale, /*. brizo 

 Wale, P. causu Wale, P. cadmus Wale, P. calchas Wale, P. callisto Wale, P. calyce 

 Wale, /'. campo, P. celo Wale and P. sp. undt. Wale 



Cienus Anomocarc Angelin, 1854. Genotype ./. laeve Ang. 



The author describes fourteen species imder this genus, all new except three species, 

 which he refers to Dames. 



Anomocare alcinoe, A. con-rexa, A. daulis, A. ephori. A. flava, ./. lalelimhatum 

 Dames, ./. lisani, A. megalurus Dames, described under the genus Liostracus; Anomo- 

 care minus Dames, A. nereis \\'^ale, described in 1906 under the genus Ptychoparia, 

 //. suhquadratum Dames (Concephalus suhquailratus Dames'! , and .Anomocare sp. imdt. 

 several forms. 



Genus Anomocarella Walcott, 1905. Genoiype ./. chinensis Walcott. 



This genus differs from Anomocare in the absence of glabella furrows and the 

 presence of a relatively narrow flattened frontal rim, etc. 



The author places twenty-two species under this genus. 



Anomocarella alhion, A. bauris, A. bergioni, A. bigsbyi, ./. hislou, A. hulcs, A. 

 chinensis, A. comus (Ptychoparia com us Wale, 1906), ./. hcrmias, A. irma, A. maiar. 



