1918.] NATURAL SCIENCES OF PHILADELPHIA. 339 



ORODINUS, p. IX, a substitute for Lophotes Giorna, 1803, for 

 no reason. 



PASCHALTESTES, p. IX, a substitute for Macquaria Cuv. & Val., 

 a personal name, before it was applied to the river Maequarie. 



ARNION, p. X, an unexplained substitute for Mugil L. 



PLECTROSTOMA, p. X, a substitute for Oxyrhi7ia Ag., pre- 

 occupied. Both names are synonymous with Isur'us Raf. 



EUPORISTA, p. X, a synonym for Plagusia Bon, preoccupied. 

 Both names are synonymous with Symphurus Raf. 



DEPORTATOR, p. X, a substitute for Plotosus Lac, on account 

 of the similarity of Plotosus to Plotus L. 



DEMIURGA, p. X, a substitute for Rhina Bonaparte, a genus of 

 rays, on account of Rhina (Oliver, 1807), a genus of beetles. But 

 Rhina, in this connection dates from Schneider (1801). The name 

 Rhina was also employed by various writers in place of Squatina, 

 its first binomial use in this connection dating from 1810, although 

 occurring in polynomial reprints from Klein at earlier periods. 



If Rhina is used for Squatina, the name Demiurga should replace 

 Rhamphohatis Gill (1861), itself also a substitute for Rhina Schneider. 



CREOTROCTES, p. X, a substitute for Pelamys C. & V. (1831) 

 subsequent to Palamita Bonaparte, 1832, also a substitute for the 

 same preoccupied name, itself a synonym of Sarda Cuvier, 1829. 

 If Sarda Plumier (1802) { = Ocyurus Gill) is accepted Palamita 

 would hold. 



DENIUS, p. X, a substitute for Sargus Cuvier, preoccupied; both 

 are synonyms of Diplodus Raf. 



BORBORODES, p. X, a substitute for Scymnus Cuvier, preoc- 

 cupied in beetles. But the substitute name of Scymnorhinus Bona- 

 parte (1846) has priority. 



PEROPTERA, p. XI, a substitute for Perioptera Gistel, but I 

 find neither name elsewhere. 



ORTHOCOLUS, p. XI, a substitute for Thymallus Cuv., regarded 

 as preoccupied by Thymalus Latreille (1803), a genus of beetles. 

 But the root-words of the two names are different, and as a sub- 

 stitute for Thymallus, Choregon Minding (1832) is prior to Orthocolus. 



TROMPE, p. XI, 109; an unexplained substitute for Toxotes 

 Cuvier (1817), perhaps on account of the later Toxotus (1821). 



APHOBUS, p. XI, a substitute for Trachidermus Heckel, pre- 

 occupied as Trachyderma. But Centridermichthys Richardson (1844) 

 for the same group has priority over Aphobus. 



