SYNONYMIC EEFERENCES. 93 



Present reference, 

 subsidua [Acrothele], Walcott [1891a, p. 608, Pi. LXX, fig. 1] Acrothele spurri. The text includes refer- 

 ence to this species and to Acrothele sub- 

 sidua. 

 Walcott [1891a, pp. 608-609, PI. LXX, figs. la-c].... Acrothele subsidua. The text includes 



reference to this species and to Acrothele 

 spurri. 



White [1880, p. 47] Acrothele subsidua. 



subsidua [Acrotreta?], AVhite [1874, p. 6] Do. 



■\ATiite [1877, pp. 34-36] Do. 



subsidua hera [Acrothele], Walcott [1908d, p. 87] Acrothele subsidua hera. 



subsidua leevis [Acrothele], Walcott [new] Acrothele subsidua Isevis. 



subtriangularis[Obolus(Schmidtia) acuminatus], Mickwitz [1896, pp. 186- 



187] Obolus (Schmidtia) acuminatus. 



sulcata [Acrotreta idahoensis], Walcott [1902, p. 588] Acrotreta idahoensis sulcata. 



sulcata [Crania], Eichwald [1829, p. 274] Siphonotreta unguiculata. 



sulcata [Orthis (Plectorthis) remnicha], Walcott [1905a, p. 269] Eoorthis remnicha sulcata. 



sulcatus [Discinopsis], Walcott [1906, pp. 568-569] Discinopsis? sulcatus. 



superba [Iphidea], Walcott [1897b, p. 711]..' Micromitra (Paterina) superba. 



swantonensis [Iphidea], Grabau and Shimer [1907, p. 201] Micromitra (Paterina) lab radorica swanton- 



ensis. 



swantonensis [Iphidea labradorica], Schuchert [1897, p. 234] Do. 



swantonensis [Iphidella labradorica], Walcott [1905a, p. 307] Do. 



swantonensis [Kutorgina labradorica], Walcott [1890b, p. 36] Do. 



Walcott [1891a, p. 609] Do. 



Swantonia Walcott [1905a, p. 296] Swantonia. 



Walcott [1908e, PI. XI, and pp. 142 and 148] Do. 



Swantonia antiquata Walcott [1905a, pp. 296-297] Swantonia'antiquata. 



Swantonia weeksi Walcott [1905a, p. 297] Swantonia weeksi. 



Syntrophia Grabau and Shimer [1907, p. 270] Syntrophia. 



Hall and Clarke [1892c, p. 270] Do. 



Hall and Clarke [1893b, pp. 216-218] Do. 



Hall and Clarke [1894a, p. 836] Do. 



Walcott [1905a, pp. 288-289] , . . . Syntrophia (in part) and Huenella (in part). 



Walcott [1908e, PI. XI, and pp. 142 and 148] Syntrophia. 



Syntrophia abnormis Walcott [1905a, pp. 289-290] Huenella abnormis. 



Syntrophia alata Walcott [1905a, p. 290] Syntrophia alata. 



Syntrophia barabuensis Hall and Clarke [1893b, p. 216] Syntrophia barabuensis. 



Walcott [1905a, pp. 290-291] Do. 



Syntrophia billingsi Walcott [1905a, pp. 291-292] Huenella billingsi. 



Syntrophia calcifera Grabau and Shimer [1907, p. 271] Syntrophia nundina. 



Syntrophia? calcifera Hall and Clarke [1893b, p. 218] Syntrophia calcifera. 



Syntrophia Cambria Walcott [1908d, pp. 106-107] Syntrophia cambria. 



Syntrophia campbelli Walcott [1908d, pp. 107-108] Syntrophia campbelli. 



Syntrophia lateralis Hall and Clarke [1892c, p. 270] , Syntrophia lateralis. 



Hall and Clarke [1893b, p. 217] Do. 



Hall [1894a, p. 837] Do. 



Syntrophia nundina Walcott [1905a, p. 292] Syntrophia nundina. 



Syntrophia orientalis Walcott [1905a, p. 292] Huenella orientalis. 



Syntrophia orthia Walcott [1905b, pp. 11-12] Syntrophia orthia. 



Syntrophia primordialis Hall and Clarke [1893b, p. 218] Syntrophia primordiali ;. 



Walcott [1905a, p. 292] 'Do. 



Syntrophia primordialis argia Walcott [1905a, p. 293] Syntrophia primordialis argia. 



Syntrophia rotundata Walcott [1905a, pp. 293-294] Syntrophia rotundata. 



Syntrophia texana Walcott [1905a, p. 294] Huenella texana. 



Syntrophia texana Iseviusculus Walcott [1905a, pp. 294-295] Huenella texana teviusculus. 



Syntrophia? unxia Walcott [1908d, pp. 108-109] Syntrophia? unxia. 



T. 



taconica [Acrotreta sagittalis], Walcott [1902, pp. 596-597] Acrotreta sagittalis taconica. 



taconica [Linnarssonia], Oehlert [1889, p. 1138] Do. 



Walcott [1887, pp. 189-190] ■... Do. 



taconica [Linnarssonia sagittalis], Walcott [1889b, p. 36] Do. 



Walcott [1891a, pp. 610-611] Do. 



tarda [Acrothyra signata], Matthew [1902b, pp. 384-385] Acrothyra sera. 



