A Monograph of Marcus Island. — Appendix. 127 



of three depressible teeth ou vomer. Anterior nostril on tip of 

 snout above lip, its tube a little more than .50 diameter of eye ; 

 tip of snout keeled ; between tube of anterior nostril and keel is a 

 mucus pore ; posterior nostril without tube, situated above anterior 

 portion of e3^e ; a pore midway between posterior nostril and tip of 

 snout; a row of four pores on the sides of each jaw. Origin of 

 dorsal in advance of gill opening, its height contained 8 times in 

 length of head. 



Color in alcohol : purplish brown, everywhere marked with 

 very numerous irregular dark brown transverse bands, those on 

 middle and anterior portion of body dendritic ; paler on belly and 

 throat, the latter becoming pale reddish. B. P. B. Mus. No. 2403, 

 is the type. 



2404. Mursena nebulosa (Bl.), 



A single specimen. 



Family HEMIRHAMPHID.F:.— The Balaos.. 

 2405. Hemirhamphus depauperatus I^ay & Bennet. 



Family EXOCCETID.F:.— The Flying-fishes. 

 2406. Bxocoetus volitans l^inn. 



Family MUGIIvID.F:.— The Mullets. 

 2407. Chaenomugil nauticus. New species. 



D. IV-1-9 ; A. iii-io; scales in lateral series 50. A long 

 pointed scale at base of spinous dorsal and base of ventral ; great- 

 est depth of body nearl}^ equal to length of head, 5.50 in total 

 length ; head a trifle less than 5 in total length ; eye equals snout 

 3.50 in head. Upper lip not thick, notched; lower lip with a 

 ridged knob at tip, which fits into notch of upper lip ; both lips 

 fringed with numerous ciliated teeth, the tips bifid or trifid. Max- 

 illar}^ entirely concealed when mouth is closed ; interorbital space 

 broad, very gently convex, 3 in length of head. Origin of spinous 

 dorsal midway between tip of snout and base of caudal ; origin of 

 anal fin forward of soft dorsal ; first ray of soft dorsal .So of length 

 of head, equal to longest rays of anal ; caudal forked, longest rays 

 scarcely as long as head. 



Color in alcohol: silvery, dorsal region darker. Margin of 

 soft dorsal and caudal dusky ; other fins pale or colorless, except 



