THE FISHES OF SAMOA. 381 



Family I'EKISTKDIII),1:. 

 PERISTEDION Lac^pfede. 



1393. Peristedion engyceros (niiitlK-r. Deep seas of Hawaii. 



1394. Peristedion hians (iilbert & Cramer. Deep seas of Hawaii. 



1395. Peristedion liorhynchus Giinther. .\flmiralty Is. (Fish. Challenger, 18S0, 46). 



Family CEl'HALAC.\NTHir)^. 

 CEPHALACANTHTIS lac^pede. 



1396. Cephalacanthus orientalis (Cornier & Valenciennes). Hawaii; New Ciuinea; Waigiu; 



Tahiti (Seale); East In.lies. 



Family G0BIII).4;. 



ANALYSIS OF GENERA OF (iOBIID.K FOUND IN THF. SOUTH SVAS. 



[This table is quite tentative, many of the genera named being of uncertjiin boundaries and doubtful value.] 

 A. Soft dorsal and anal free from the caudal: no pit above the opercU'. 

 B. Spinous dorsal present: ventral fins well developed. 

 C. Ventral rays, i,-5. 

 D. Ventral fins more or less divided. 

 £. ELEOTRIN.S: Ventral fins wholly separate: pectorals normal: eyes normal. 

 F. Body scaly.' 



G. Vomer with teeth; a caudal ocellus: scales small Bostrychus 



GG. Vomer without teeth. . . 

 //. Scales small (tfiWrthafiSO). 



r. Sides of head naked: one or more dorsal spines produced Valenciennea 



//. .Sides of head scaly; none of the dorsal spines produced: head depressed. 



./. Preopercle with a small hook or antror.se spine at its angle Eleotris 



././. Preopercle unarmed Guavina 



Hir. Scales moderate or large (fewer than 50). 



A". Snout broad, flat, depressed: sides of head scaly Ophiocaka 



KK. Snout moderate. 

 L. Top of head with bony crests: a black spot at base of pectoral BiiTia 



M. Siil.'..:iif hruil .s.-.ily; srali-s large. 

 .V. Siilrsuf hrad witli v.rticrtl series of small cirri; lower jaw heavy: bodyrobust . . . .(Jobiomoiu.hfs 

 .Y.Y, Sirh.s,)f honil withmit cirri. 



0. Preopercle with 2 or 3 rather strong upturned spines; body robust Asterropterix 



00. Preopercle unarmed; body compressed, the form and habit similar to that of Fimdulus; head 



pointed, depres.sed FIypseleotris 



MM. Sides of head naked; preopercle unarmed. 



P. Nuchal region entirely naked Ev iota 



PP. Nuchal region fully scaled Tri m.ma 



FF. Body entirely naked, slender, and elongate. 



Q. Dorsal fins separate, the second moderate Hetereleotris 



QQ. Dorsal fins connected, the second many-rayed; chin very prominent; tongue notched Vitreola 



EE. Periophthalmin.e: Ventral fins partly united at the fleshy base; pectoral with a scaly muscular base; eyes 

 niort'iir Ics-^ stalked; .scales very small, cycloid; tongue short, rounded, adnate; isthmus broad. 



;,■ I i"i ■ > I" xv-12; teeth not horizontal and not exserted. 



^0 to 100) Pebiophthalmds 



-■ - ' I ubout55 Pekiophthalmodon 



/)/', i;..i M- i \' iiril tins completely united; pectoral without scaly muscular base; eyes not erectile. 

 T. Ventral tins net adnate to the belly, in a short rounded disk; upper teeth not movable, 

 r. Body .scaly. 

 V. Vomer without teeth. 

 IT'. Teeth not all in one series in each jaw. 

 ,Y. Caudal fin not lanceolate nor greatly produced; teeth all simple, no barbels. 

 1'. Cheeks and operclcs eacli well sealed. 



Z. Scales small; pectoral with silky rays above Chi.amydes 



XZ. Scales large: tongue notched: pectoral without silky rays g.natholepis 



IT. Cheeks naked; opercles scaly; scales of body large Vaimosa 



yvy. Cheeks and opercles naked. 



