18. LABROIDES. 119 



operculum not serrated ; lateral Hue continuous. Teeth in the jaws 

 minute, forming a band ; a pair of curved, erect canines in each jaw, 

 the upper pair received between those of the lower ; a posterior 

 canine tooth. Formula of the fins : D. ^. A.. ^J. The gill- 

 membrane is attached tj the isthmus. 

 Red Sea. East Indian Archipelago. 



Dr. V. Bleeker separates this genus into two : — 



a. The lower lip divided into two lobes ; anal spines three : Lahroides, 

 p. 119. 



h. The lower lip without produced lobes ; anal spines two : Diprocta- 

 canthusy p. 120. 



a. Labroides, Bleek. 



1. Labroides dimidiatus. 



Labnis latovittatus, Riipp. N. W. Fische, p. 7. taf. 2, fig. 2 (not Lacip.). 

 Cosayphus dimidiatus, Cuv. Sf Val. xiii. p. 136. 

 Labroides latovittatus, Bleek. Act. Soc. He. Indo-Nederl. ii. Amboina, 

 viii. p. 73, and Atl. Ichth. p. . tab. 44. fig. 1. 



D.i. A.I. L.lat.50. 



Lips fleshy, both emarginate anteriorly. Head much longer than 

 high, pointed. A black band from the snout through the eye to the 

 extremity of the caudal fin, gradually becoming broader posteriorly 

 and occupying nearly the whole of the caudal fin ; the inner half of 

 the soft dorsal and anal brown, the outer yellowish ; caudal fin with 

 the upper and lower margins whitish. 



Red Sea. Amboyna ; Goram. 



a. Seventeen lines long. From Dr. P. v. Bleeker's Collection. 



2. Labroides paradiseus. 



Valent. iii. p. 348. fig. 8, and p. 407. fig. 193 ; Rmard, Poiss. Mol. i. 



tab. 24. %. 131. 

 Labroides paradiseus, Bleek. Banda, i. p. 249, and Atl, Ichth. p. 



tab. 44. fig. 2. 



D.^. A.^. L.lat.50. 



Lips fleshy; two anterior canine teeth in each of the jaws. Head 

 much longer than high, pointed. A black band from the snout 

 through the eye to the caudal fin, bent downwards posteriorly to the 

 lowQr margin of the tail, and leaving a great portion of the lower 

 part of the caudal fin white. Fins yellowish ; dorsal and anal fins 

 black at the base. 



East Indian Archipelago. 



a. Thirty lines long. From Dr. P. v. Bleeker's Collecticm. 



If I had not seen Dr. P. v. Bleeker's accoimts, I should not have 

 hesitated to consider his L. paradiseus as identical with Riippell'e 

 L. latovittatus, and the small specimen, named by Bleeker L. lato- 



