1884.] GENERA SICYDIUM AND LENTIPES. 165 



a small median papilla above the maxillarv suture, upper lip with a 

 slight median cleft ; mnxillse contain an angle of about GO^ ; hori- 

 zontal teeth conspicuous. 



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

 two third times the length of the head ; tlie width and height of 

 the liead are equal and two thirds of the length. The height of 

 the body is about a quarter of the length. Scales rather large, those 

 on the neck, belly, and tail being smaller than the rest. The 

 diameter of the eye is contained five and a half times in the length 

 of the head and about three in the interorbital space. The len-^th 

 of the pectoral equals the length of tlie head ; the length of tiie 

 caudal is about one sixth of the total length of the body. The third 

 dorsal spine is produced into a short filament not so high as the 

 body; second dorsal not so high as the body. Colour greenish 

 above, with eight blackish cross bars ; a blackish band along the 

 side, most distinct on the base of the caudal and along its middle 

 rays ; dorsal and anal fins immaculate, the latter with a blackish 

 intermarginal band ; caudal with a black horseshoe-like mark ; 

 pectoral and ventral yellow. 



Total length Sy^jj- inches. 



Hub, Amboina. 



One adult specimen. 



16. SicYDiUM NiGRESCENs, Gthr. 



Sicydium niyrescens, Giinth. ' Challenger ' Shore Fishes, p. 60, pi. 

 xxvi. fig. C. 



D. G~. A. ^^. L. lat. 80. L. trans. 16. 



Teeth in the upper jaw tricuspid. 



Gum beneath the upper lip smooth, no median papilla above the 

 maxillary suture ; no median cleft in the upper lip ; maxillte are at 

 right angles to one anotlier ; horizontal teeth conspicuous. The 

 length of the body (without the caudal) is four and a half times tlie 

 length of the head ; the width of the head is rather greater than 

 the lieight. The height of the body is one filth of the length. 

 Scales on the occiput, anterior part of body and belly in irreoular 

 series and much smaller than those on the rest of the body. '^The 

 pectoral is considerably, and the caudal much longer than the head. 

 The diameter of the eye is one seventh of the length of the head and 

 rather more than one third of the interorbital space. The first, 

 second, and third dorsal spines are produced into filaments, the 

 third, which is the longest, is nearly twice the height of the body ; 

 second dorsal higher than the body ; the posterior rays are much 

 produced, extending beyond the root of the caudal. Colour 

 uniform brownish-black; vertical fins black; pectoral and ventral 

 brown. 



Total length nearly 5 inches. 



Honolulu. 



One adult specimen (type). 



