1884.] GENERA SICYDIUM AND LENTIPES. 161 



brown ; lower margin of the pectoral white-edged ; caudal with a 

 dark brown and white band on the upper and lower margins. 



The largest specimen measures 2\ inches. 



Hub. Savaii. 



Many specimens — adult, half-grown, and young. 



9. SlCYDIUM T.ENIURUM, Gtlir. 



Sicydium lagocephalum (non Pall.), Kner, SB. Ak. "Wien, Iviii. 

 p. 327. 



Sicydium macrostetholepis, Giinth. Cat. Fish. hi. p. 94. 



Sicydium taniurum, Giinth. Fische der Siidsee, p. 183, pi. cxii. 

 fig. C. 



D. 6 ~. A. -5. L. lat. 54. L. trans. 16. 



Teeth in the upper jaw tricuspid. 



A row of rather large tuberculous papilla? on the gum beneath 

 the upper lip, with larger elongate median papilla above the 

 maxillary suture ; upper lip with a median cleft ; maxillae contain 

 an angle of about 75° ; horizontal teeth conspicuous. 



The total length of the body (without the caudal) is four and 

 a half times the length of the head ; the width and height of the 

 head are subequal and two thirds of the length. The height of the 

 body is contained four and three quarter times in the length. Scales 

 subequal and rather large, except the first eight or ten rows on 

 the occiput. The diameter of the eye is contained five and a half 

 times in the length of the head and two and a half in the inter- 

 orbital space. The length of the pectoral is greater than the 

 length of the head ; the length of the caudal is less than one fourth 

 of the total length of the body. The third dorsal spine is produced 

 into a filament one and a half times the height of the body. 

 Colour, body and fins uniform brownish ; second dorsal with several 

 transverse rows of dots on the rays ; caudal with dark horseshoe- 

 like marginal band met by a second passing along its middle rays 

 from the root. 



The largest specimen measures 3| inches. 



Hah. Aneiteum ; Viti Levu. 



Five adult specimens (types). 



10. Sicydium lagocephalum, Pall. 



Gobius lagocephalus, Pall. Spicil. Zool. viii. p. 14, pi. 2. 

 figs. 6-7. 



Sicydium lagocephalum, Cuv. & Val.xii. p. 174 ; Giiuth. Cat. Fish. 

 iii. p. 92; Kner, ' Novara,' Fische, p. 181. 



D.6i A.i. 



Teeth in the upper jaw tricuspid; a row of papillae on the gum 

 beneath the upper lip, with a larger median papilla above the maxil- 

 lary suture ; maxillae contain an angle of about 75°. 



Horizontal teeth conspicuous ; upper lip with a median cleft. 



The total length of the body is five and a half times the length 

 of the head ; the width and height of the head are equal. The 



