BIBLIOGRAPHY OF PALHOZOIC CRUSTACEA 127 
WALCOTT (Charles D.)—Continued 
Walcott refers Dikelocephalus misa Hall to this genus. The other species referred by 
Brogger to the genus, such as Dikelocephalus osceola Hall, are referred by Walcott to 
a new genus Osceolia, and Dikelocephalus spiniger to the new genus Calvinella. 
3. Saukia, new genus. The genus has a narrow frontal border about the cephalon, 
and a glabella proportionately more elongated than in Dikelocephalus. The pygidium 
is less expanded and more elongate than that of Dikelocephalus. .Genotype Dikelo- 
cephalus lodensis Whité. 
The author describes Saukia coloradoensis n. sp., S. crassimarginata Whitfield, 1882, 
S. fallax n. sp., junta n. sp., S. leptaenarum Wiman, 1907; S. leucosia n. sp., S. lodensis 
Whitf. the type S. marica Walc., 1886; S. pepinensis Owen, 1852; S. pyrene n. sp., S. 
rustica n. sp., S. stosei n. sp., S. wardi n. sp. 
4. Osceolia, new genus. This genus is characterized by its concave frontal limb, 
palpebral lobes, narrow fixed cheeks and transverse pygidium with its anterior segment 
extended beyond the margin as a long spine. Genotype Dikelocephalus oseola Hall, 
1863. 
5. Calvinella, new genus. Genotype Dikelocephaius spiniger Hall, 1863. This genus 
is like Saukia, but differs in form of the glabella, presence of strong occipital spine, and 
proportionally more elongated pygidium. It differs from Osceola in frontal limb of 
cephalon, presence of occipital spine and character of pygidium. 
The author refers to the genus Dikelocephalus newtonensis Weller, 1903; Calvinella 
ozarkensis n. sp. Dikelocephalus spiniger Hall, 1863, and Calvinella tenuisculpta n. sp. 
Cambrian Geology and Paleontology, Part 3, No. 1. The Cam- 
brian faunas of Eastern Asia. 
Smithsonian Mise. Coll., vol. 64, No. 1, 1914. 
The author gives a historical review with a summary of the genera and species. 
A new genus, Tsinania, with ///aenurus canen for the genotype, is given on page 43. 
The genus differs from Illaenurus Hall, in having the cranidium rounded in front, by 
the incurving of the facial sutures, and short postero-lateral limbs. He refers several 
species to the new genus previously included under Hall’s genus, viz: Tsimania canens, 
T. ceras, T. cleora and T. dictys. 
Cambrian Geology and Palwontology, No. 3.) Cambrian Tri- 
lobites. 
Smithsonian Misc. Coll., vol. 64, No. 3, 1916. 
The author, under the Order Proparia, describes several new genera. 
Family Menomonidae—Menomonia a new genus with Conocephalites, calymenoides 
Whitfield as the genotype. 
Millardia, a new genus with M. semele as genotype. Refers one new species M. 
avitas and Conocephalites optata Hall, also, to the genus. 
Dresbachia, a new genus with PD. anata as the genotype. 
Norwoodide, a new family with a new genus, Norwoodia, with five new species: 
Genotype N. gracilis, also N. ponderosa, N. Saffordi, N. simplex and N. tenera. 
The cranidium, with its Ptychoparia-like glabella and small eyes and broad pleural 
furrows, are primitive, while the few thoracic segments ($8 or 9) and relatively large 
tail, suggests the sub-family Phacopinae. Under the order Opisthoparia, he describes 
Agraulos stator n. sp.; also Acrocephalites Wallerus, with a translation of that au- 
thor’s description of the genus, with nine new species. Refers Solenopleura ? stenome- 
topa Ang. and Conocephalites vulcanus Bill. to the genus. 
Compares the new species 4. Haynesi and tutus with the genotype, 4crocephalites 
insignis has narrower fixed cheek and frontal limb of 4. stenometopus, A. Americanus 
