194 RESEARCH IN CHINA. 



The subrectangular glabella is somewhat like that of Ptychoparia aclis [plate 12, 

 fig. 8], but the short frontal limb and flat rim distinguish it from the latter species. 



It is associated with Conokcphalina vesta [plate 13, fig. 9], from which it differs 

 in the form of the glabella and palpebral lobes. 



A form closely related to this occurs about 100 feet (30 m.) lower at the sama 

 locality and section. 



Formation and Locality. Middle Cambrian: (C69) Limestone in shales about 

 65 feet (19.5 m.) above the base of the Ki-chou limestone, and (C72) thin green- 

 gray limestone interbedded with ocherous and green clay shales, overlying the mas- 

 sive oolite in the Ki-chou formation [Willis and Blackwelder, 1907, pp. 139 and 145 

 (first and third lists of fossils)], 4 miles (6.4 km.) east of Fang-lan-chon, Shan-si, China. 



Collected by Eliot Blackwelder. 



Anomocare subquadratum (Dames). 



Plate 1 8, Figure n. 



Caiifi-fliiilites subquadratus DAMES, 1883, China, Richthofen, vol. IV, p. u, plate i, figs. 9, n. (De- 

 cribcs and illustrates a cranidium and associated pygidia.) 



( >f this species we have several specimens of the cranidium and possibly the 

 free cheeks and pygidium.but as the cranidium is associated with that of the closely 

 related Anomocarella bates [plate 19, figs. 7, -ja-J] it is not possible to determine to 

 which of the species they belong. The generic reference is of doubtful value. 



Formation and Locality. Middle Cambrian: (35 n) Fu-ch6u series, limestones 

 near the base of the series just above the white quartzite [see Blackwelder, 19076, 

 p. 92, for general section showing stratigraphic relations] ; collected in a low bluff on 

 the shore of Tschang-hsing-tau Island, east of Niang-niang-kung, Liau-tung, Man- 

 churia, China. 



Also from Locality (C 7), Lower limestone member of the Kiu-lung group [Black- 

 welder, 19070, pp. 37 and 39], 2.2 miles (3.5 km.) southwest of Yen-chuang, Sin-t'ai 

 district, Shan-tung. 



Collected by J. P. Iddings and Li San. 



Anomocare sp. undt. Walcott. 

 Anomocare s\). undt. WALCOTT, 1906, Proc. U. S. Nat. Mus., vol. xxx, p. 584. (Discussed as below.) 



This form is represented by a fragment of the central portion of a large cephalon 

 much like that of Anomocare alcinoc [plate 18, fig. 6]. The frontal limb and broad 

 rim are similar to those of Anomocarella lemenns [plate 20, fig. 7]. It is the youngest 

 representative of this type of Anomocare as it occurs near the summit of the Cam- 

 brian system in China. 



Formation and Locality. Middle Cambrian: (C77) Limestone interbedded in 

 green shales not more than 300 feet (90 m.) above the Man-t'o shales [Willis and 

 Blackwelder, 1907, p. 144 (first list of fossils)], 4 miles (6.4 km.) southeast of Yau-t'o, 

 near Wu-t'ai-hien, Shan-si, China. 



Collected by Eliot Blackwelder. 



Anomocare spp. (a), (b), (c), and (d). 

 Plate 19, Figures 3-6. 



Four forms of pygidia occur in various associations that have not been referred 

 to any described species. 



One (a) is represented by figure 4. It occurs at Locality C G4, Upper Cambrian, 

 upper limestone member of the Kiu-lung group [Blackwelder, 19070, pp. 37 and 42 

 (first list of fossils), and fig. 10 (bed 20), p. 38], 2.7 miles (4.3 km.) southwest of 



