Dr. A. Gun ther's Synopsis of the Labroid Genera. 383 



mains with regard to their generic value. Pteragogus, we hope, 

 will be figured in the forthcoming work on the Mossambique 

 fishes by Prof. Peters. 



First Group : Labrina. 



Dorsal fin many-rayed, composed of more than twenty rays, 

 thirteen of which at least are spinous. All the teeth in the jaws 

 are conical ; no posterior canine tooth. 



Temperate regions of the North Atlantic : only one species 

 from the Caribbean Sea; another species from the coasts of 

 Chile. 



* Anal spines three. 



1. Labrus (Labrus, sp. ; Crenilabrus et Coricus, Cuv.). Teeth 

 in a single series ; cheeks and opercles with imbricate scales ; 

 dorsal spines not prolonged. (L. maculatus, Bl. ; L. melops, 

 L. ; L. rostratus, Bl., &c.) 



2. Lachnolaimus, Cuv. & Val. Teeth in a single series; cheeks 

 and opercles with imbricate scales ; anterior dorsal spines 

 much produced. (L. falcatus, L.) 



3. Tautoga, Mitch. (Tautoga, sp., Cuv. & Val.). Teeth in a 

 double series ; scales on the cheeks rudimentary, opercles 

 naked. (Tautoga onitis = Labrus onitis, L. = Tautoga nigra, 

 Mitch.) 



4. Malapterus, Cuv. & Val. Teeth in a single series ; im- 

 bricate scales on the cheek ; operculum with a series of scales 

 along the lower margin, the rest of the opercular apparatus 

 being naked. (M. reticulatus, Cuv. & Val.) 



5. Ctenolabrus, Cuv. & Val. Teeth of the jaws forming a 

 band; cheeks and opercles scaly. (C.rupestris,~h.; C.burgall, 

 Schoepff, &c.) 



** Anal spines more than three. 



6. Acantholabrus (Acantholabrus, sp., Cuv. & Val.). Teeth 

 of the jaws forming a band. (A. Palloni, Bisso ; A. Couchii, 

 Cuv. & Val.) 



7. Centro labrus (Acantholabrus, sp., Cuv. & Val.). Teeth in 

 a single series. (C. exoletus, L. ; C. trutta, Lowe; C. rome- 

 ritus, Val.) 



Second Group : Hypsigenina. 



Dorsal fin with twenty rays, thirteen of which are spinous. 

 The lateral teeth are more or less confluent into an obtuse 

 osseous ridge, whilst the anterior remain free, conical. 



From the Chinese seas to the coasts of Australia. 



8. Hypsigenys (Cossyphus, sp., Cuv. & Val., Bleek. ; Creni- 



