BRACHIOPODA. 
115 
Argiope cisteUula, Dav. Mon. Tertiary Brack, part 1. p. 10. pi. 1. 
f. 13; Ann. Nat. Hist. 1852, p. 373; Proc. Zool. Soc. p. 
pi. . f. 28. 
Hub. Zetland, in 40 fathoms (M‘Andrew). 
Fossil. Miocene. Suffolk (Searles Wood). 
5. Argiope? pusilla. 
Shell minute, obtusely subtriangular, depressed, smooth; dorsal 
valve transversely oblong, depressed in front ; ventral valve with 
a prominent beak; hinge-line straight, nearly as wide as the 
shell (area flat; deltidium large, triangular, striated transversely; 
foramen minute, apical ? ?). Lon. 1 line. 
Terehratula pusilla, Eichwald, 1852, Leth. Ross. p. 55. t. 3. f. 13. 
Bronn, Index, p. 1247 (not Sow. or Philippi). 
Terehratula pygmsea, (Eichw.) Bronn, Leth. p. 908 (not Schl.). 
Fossil. Miocene. Volhynia. 
Argiope cistellula, variety of? 
6. Argiope decemcostata. B.M. 
Shell minute, somewhat pentagonal, ornamented wdth about 
ten corresponding ribs ; larger valve deep ; area as wide as the 
shell, deep, triangular; foramen large; deltidia narrow', rudi- 
mentary ; dorsal valve rather flat, furnished internally with a 
single elevated, central septum (and a very fragile two-lobed 
loop. Suess). Lon. 1, lat. 1, alt. i hne. 
Terehratula decemcostata, Rcemer, 1840, Nord. Kreid. p. 41. t. 7- 
f. 13. 
Bronn, Index Pal. p. 1234. 
Argiope decemcostata, Dav. Mon. Cret. p. 16. pi. 3. f. 1-13. 
Terehratula Duvalii, Dav. 1847, Charlesworth’s Journal, p. 113. 
pi. 18. f. 15-18. 
Megathiris cuneiformis, D’Orb. 1847, Ter. Cret. p. 147. ph 521. 
f. 1-11 ; Prod. ii. p. 259. 
Fossil. Chalk. Sweden; England; Belgium; Germany; France; 
Transylvania. 
7. Argiope Bronni. 
Shell minute, cuneiform, depressed, with eight corresponding 
ribs to each valve ; area wide and distinct ; foramen large. 
Lon. 2, lat. 3, alt. 1 lines. 
Orthis Bronni, Hagenow, 1842, Neues Jahrbuch, p. 543. t. 9. f. 7- 
Terehratula Bronni, Rcemer, Kreid. p. 41. 
Bronn, Index, p. 1231. 
Fossil. Chalk. Riigen, Baltic. 
