FAMILY LAB RID AE — SCHULTZ 



127 



number of dentae is a character that is not useful in the distinguishing 

 of species in this genus. 



Table 90. — -Correlation between dentae on edge of preoperde and standard length in 



Pteragogus flagellifera 



Species 



Fin rays 



Dorsal 



IX 



III 8 



Pectoral (total rays) 



flagellifera. 

 guttatus... 



KEY TO THE SPECIES OF PTERAGOGUS 



la. Dorsal rays IX,11; opercle and cheek with narrow light and dark reticula- 

 tions; plate 91, D P. flagellifera ^2 (Cuvier and Valenciennes) 



1&. Dorsal rays X,10 (rarely X,ll). See table 91. 



2a. White bar at base of caudal fin; 5 round dark spots or blotches on side of 

 body but absent in juveniles; no dark bar with white edge below eye. 



P. guttatus (Fowler and Bean) 

 26. No white bar at base of caudal fin; no spots as in 2a; a distinct dark bar 

 with white edges below eye and one on side of snout. 



P. taeniops ^ (Peters) 

 Ic. Dorsal rays XI,9 or 10; opercle with dark ocellate spot. 



P. opercularis '* (Peters) 



" Ctenolabrus flagellifera Cuvier and Valenciennes, Histoire naturelle des poissons, vol. 13, p 240, 1839 

 (no locality given). 



Probable synonyms are: Ctenolabrus aurigarius Richardson 1844, and C. rubellio Richardson 1844; Creni- 

 labrus nematopterus Bleaker 1851; C. enneacanthus Bleelrer, 1853; C. spilogaster Bleaker, 1854; Cossyphus 

 filamentosus Peters, 1855; Duymaeria japonica Bleeker, 1856; B. amboinensis Bleeker, 1856; D. caeruleomacu- 

 lata Qunther, 1862. 



" Cossyphus taeniops Peters, Arch. Naturg., vol. 21, p. 262, 1855 (type locality, Mossambique). 



«< Cossyphus opercularis Peters, Arch. Naturg., vol. 21, p. 261, 1855 (type locality, Mossambique). 



