98 



LABRTD.T5. 



inches, lines. 



Total length 15 8 



Height of the body 4 



Length of the head 3 8 



of the pectoral 2 lli 



of the ventral 2 3 



of the last dorsal spine 11 



of the third anal spine 9 



Third Group. JULIDINA. 



10, XIPHOCHILUS. 



Xiphocheilus, Bleek. Nias, p. 223. 



Body oblong, covered with large scales. (L. lat. 28-29.) Head 

 scaly, nearly as high as long ; snout obtuse ; both limbs of the prae- 

 operculum, the posterior and the inferior, are naked. Lateral line 

 continuous. Fins not scaly at the base. Formula of the fins : 

 D. -^g-. A. — . The upper lip is thin, sword-shaped, and can be 

 nearly entirely hidden below the prseorbital. Both jaws anteriorly 

 with four canine teeth ; the lateral teeth united into an osseous ridge ; 

 a- posterior canine tooth, Branchiostegals six. 



Indian Ocean and Archipelago. 



1. Xiphochilus typus. 



Bleek. I. c. p. 224, and All. Ichth. tab. 21. fig. 7 

 D. f . A. ^. L. lat. 28. 



The height of the body is contained four times aud a half in the 

 total length, the length of the head four times and three-fifths ; 

 head obtuse, as high as long ; the maxillary extends to below the 

 posterior half of the orbit ; canine teeth large, green-coloured. The 

 prffiorbital as high as the orbit. Scales on the head large, those 

 on the cheek in three series ; Umbs of the pra^operculum naked ; 

 operculum terminating in a broad membrane. Olive : head, body 

 and fins with blue stripes edged with violet : one curved across the 

 snout, from one eye to the other, another from the eye to the inter- 

 maxillary, a third from the lower jaw towards the operculum ; the 

 streaks on the body are oblique, descending backwards, subin- 

 terrupted. Dorsal with two or three longitudinal stripes, anal -and 

 caudal with transverse ones. {Bl.) 



Sea of Nias. 



2. Xiphochilus robustus. 

 B. H. A. ~. L, lat, 29, L. transv. 3/9. 



Cheek wnth seven series of small scales. 

 Mauritius. 



a. Thirteen inches long : stufibd. From Dr. Janvier's Collection. 



Description of the specimen. — The height of the body is nearly 



