298 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [74] 



thograpliy. Among American genera of fishes we may therefore use 

 the following, notwithstanding their earlier analogues : 



Microstomus for Cynicoglossus notwithstanding the prior Microstoma. 



Heterodontus Cestracion Heterodon. 



Lucania Lucanus. 



Thymallus Thymalus, 



Nebris Nebria. 



Cestreus (Kecrpevc) Cynoscion Cesirceus (KEOTpaW). 



Xipliidion Xiphister Xiphidium. 



Amitra Monomilra Amitrus. 



Scytalina Scytaliscus Scytalinus. 



Lagochila Quassildbia Lagocheilus. 



Aachenopicnix Cremnobates Auchenipterus. 



Ophisoma Congromurcena Ophiosomus. 



Leucos Myloleucus Leucus. 



Pterophryne Pteroplirynoidcs Pterophrynus. 



Scaphirhynch us Scapliirhynchoji* Scaphorhynchus. 



Bracliirus Synnptura Brackyrus. 



If Microstomus be discarded, the name nest in order of date is Cyn- 

 icoglossus. 



The following is Bonaparte's definition of Cynicoglossus as quoted by 

 Gill (Proc. Ac. Nat, Sci. Phila., 1864, 222) : 



" Secondo e Cynicoglossus nob. che come il PL cynoglossus L. ha la linea 

 laterale retta, la bocca piccola, i deuti come quello di sopra [Platesm] ma 

 la mascelle ignale, con labbra tnrgide, e l'ano senza spina." 



Later, in his Catalogo Metodico dei Pesci Europei, Bonaparte changes 

 this name from Cynicoglossus to Cynoglossa, giving the sole species as 

 Cynoglossa microcephala, and quoting as its synonym '•' Pleuronectes cyno- 

 glossus L. Nilss." showing that his identification of the Linuaean species 

 coincided with that of Nilsson, who at first used the name " Pleuronectes 

 cynoglossus v for the present species instead of the species of Glyptocepha- 

 lus. In Bonaparte's Catalogo, Glyptocephalus Gottsche is regarded by 

 Bonaparte as synonymous with Platessa. 



It is thus evident, as Dr. Gill has suggested, that Bonaparte meant 

 to refer to the Pleuronectes microcephalus instead of PL cynoglossus, he 

 "having followed Nilsson in his erroneous identification" of the latter 

 with the former. In farther evidence of this we have the fact that Cyni- 

 coglossus microcephalus (kitt) has no anal spine, while such a spine is 

 present iu the species of Glyptocephalus. We would be, therefore, jus. 

 tified in the use of Cynicoglossus instead of the later Brachyprosopofi, 

 if Microstomus should be regarded as ineligible on account of the prior 

 name Microstoma. 



ANALYSIS OP SPECIES OF MICROSTOMUS. 



a. Dorsal rays 85 to 93 ; anal rays 70 to 76. Head very small, 4f to f>A in length ; depth 

 about 2£; eyes moderate, about 4 in head; pectorals If in head; lat. 1., 130; 

 vertebra? 13 + 35 = 48. Color dull yellowish-brown, body and fins clouded with 

 blackish, Kitt, 88. 



aa. Dorsal rays 102 ; anal rays 85. Head larger, 4| in length ; depth nearly 3 in 

 length ; eyes large, 3 in. head, opercle above angle, adnate to the shoulder girdle ; 

 pectoral short, 1£ in head ; lat. 1. 140 ; vertebra? 12+40=52. Olive-brown, blotched 

 on body and fins with darker Pacificus, 89. 



