NO. 1415. CA MB HI A N FA UNAS OF CHINA— \VA IJ'OTT. 87 



Fonnat/oi) <rnd JomUfy. — Upper Cainl)riaii, base of tlio Chao Mi 

 Tien formation, in a coarse, fossiliferous gray limestone, o miles south- 

 west of Yen Chuang, Hsin Tai, Shanotung, China. 



Collected by Eliot Blackwelder, of the Carnegie Institution of 

 Washington Expedition to China. 



Genus SHANGTUNGIA, new genus. 



As there is but one species of this genus, the description of the 

 species includes all that is known of the genus and species. The 

 genus is characterized by the large palpebral lobes, smooth, truncato- 

 conical glabella, and the long spinose extension of the front, which is 

 unlike that of Ampyx, as the latter proceeds from the glalxdla, while 

 the spine of Shangtungia is from the frontal I'im, in the same manner 

 as that of I*ri><inij>i/,r (icaiiihuituin Angelin; but it diti'ers radically 

 from the latter genus and species in the character of the glabella and 

 palpebral lobes. 



Genotype. — Shc(/u/tu/)(/ia spiuiftra. 



SHANTUNGIA SPINIFERA, new species. 



Outline of head, exclusive of free cheeks and frontal spine, sub- 

 rhomboidal, moderately convex. (Tlal)ella truncato-conical, slightly 

 longer than its width at the base; at the postero-lat(M-al angle of the 

 glal)ella a small, low lobe extends out into and partially tills up the 

 dorsal furrow; there is also a slight pit in the dorsal furrow^ opposite 

 a point where a second glabellar furrow usually occurs in similar gla- 

 bellse; occipital furrow narrow, distinctly detined at the sides, but 

 very shallow near the center; occipital ring slightly convex, strong, 

 and of equal width from side to side; dorsal furrow deep at the sides 

 and scarcely perceptible in front of the glabella. 



Fixed cheeks about two-thirds as wide as the glabella; they rise 

 abruptly from the deep dorsal furrow, and then slope upward to the 

 palpebral lobe; back of the palpebral lol)e they drop somewhat 

 abruptly to the postero-lateral limb, and in front to the furrow 

 between the frontal limb and rim; ocular ridge very slight, scarcely 

 perceptible in most specimens; palpebral lobe large, rounded, and 

 rising at the margins above the level of the lixed cheeks; rim of the 

 broad marginal border with an inward slope toward the fixed cheeks, 

 but not any well detined furrow such as usually occurs on the palpe- 

 bral lobes; the length of the palpebral lobe is about one-half of the 

 distance between the furrow in front of the frontal limb and the pos- 

 terior margin of the head; postero-lateral limb slender, and extending 

 more than the width of the glabella outward from the dorsal furrow; 

 frontal limb very short and scarcely separable from the downward 

 slope of the front of the glabella; at the sides it merges into the fixed 

 cheeks; it is separated from the frontal rim l)y a peculiar transverse 



