K)0 LABRID^. 



The height of the body is one-fourth of the total length. Fore- 

 head protuberant, especially in large individuals, from an accumu- 

 lation of fat immediately above the eyes. Lips thick, fleshy. Teeth 

 on the intermaxillaries and in the lower jaw alike, consisting ex- 

 ternally of a single row, stout and conical, of which the two anterior 

 pairs are much larger than the others and project forward ; within 

 this external row is a band of blunt, rounded teeth, scarcely pro- 

 jecting above the membrane. Pharyngeal teeth flat, tessellated, 

 tubercular. Operculum and suboperculum scaly, prceoperculum 

 naked. Scales deeply imbedded, extending but slightly on the ver- 

 tical fins ; cutaneous flaps of the dorsal spines long. The length of 

 the ventral is one-seventh of the total ; caudal slightly concave. Dark 

 blackish-brown, anterior portion of the trunk sometimes red. 



Coast of San Diego (California). 



12. TROCHOCOPUS. 



Body oblong, covered with scales of moderate or rather small size 

 (L. lat. 45-62) ; head scaly, as long as, or longer than, high, with 

 the snout of moderate extent ; both limbs of the praeoperculum are 

 naked, not serrated. Lateral line continuous. Base of the soft 

 dorsal not scaly. Formula of the fins : D. ^^. A. ^. Both iaws 



•t 10 12 -^ 



with four canine teeth anteriorly ; lateral teeth distinct j a posterior 

 canine tooth. 



Indian Ocean. Galapagos Islands. 



1. Trochocopus opercularis. 



D.H A.^. L. lat. 45. 



Head much longer than high, one-third of the total length (the 

 caudal fin not included) ; snout produced, conical ; cheek with about 

 six series of small scales. Dorsal spines of moderate strength and 

 length, pungent, gradually becoming longer posteriorly. IJniform 

 yellowish (in a dried state), with a black spot on the end of the 

 operculum. 



Mauritius ? 



a. Six inches long : stufffed : not good state. From Dr. Janvier's 

 Collection. 



2. Trochocopus darwinii. 



Cossyphus darwinii, Jeiiyns, Zool. Beagle, Fishes, p. 100. pi. 20. 

 Labrus aper, Valenc. in Voy. Venus, Zool. p. ^ZS, Poiss. pi. 8. fig. 1. 



D.l^. A.i. L. lat. 62. 



Snout pointed ; head nearly as long as high ; praeoperculum with- 

 out serrature ; fins not scaly ; the soft dorsal and anal and the caudal 

 lobes produced into points ; scales on the cheek imbricate. Red, 

 with a large yellow spot above the pectoral, and with a black spot 

 anteriorly on the dorsal fin. 



Galapagos Islands. 



With a little attention, Valenciennes might nave convinced him- 



