11. NOMETJS. 387 



Second Group. NOMEINA. 



Smmhidce with a distinct spinous portion of the dorsal fin, sepa- 

 rated from, or continuous with, the soft, which is the more developed. 

 Body oblong, covered with cycloid scales of moderate size. 



10. GASTEROCHISMA. 



Gasterochisma, Richards. Ann. i^ May. Nat. Hist. xv. 1845, p. 346, 

 and Ichthyol. Voy. Ereh. 4'' Terr. p. 60. 



The body is oblong, compressed, covered with cycloid scales of 

 moderate size ; cleft, of the mouth wide. Lateral hne without any 

 armature. The first dorsal with seventeen spines ; the second and 

 the anal with the posterior rays detached, forming finlcts ; no sepa- 

 rate anal spiues. The ventral is exceedingly long and broad, and 

 can he completely concealed in a deep fissure on the abdomen. Teeth 

 conical, small, forming single series in the jaws ; teeth on the vomer 

 and the palatine bones. 



Coast of New Zealand. 



1. Gasterochisma melampus. 



Richards. 11. cc. pi. 37. f. 1-3. 



(•? B. 5.) D. 17 1 3^ I VI. A. -^ I VI. V. 1/5. 



Ventrals black, one-third of the total length. The maxillary 

 reaches somewhat beyond the vertical from the centre of the eye. 

 New Zealand. 



a. Type of the species : bad state. Port Nicholson. From the 

 Haslar Collection. 



11. NOMEUS. 



Nomeus, Cm: Reyne Aiiim. ; Cuv. i^ Val. vs.. p. 242. 



The body is oblong and rather compressed, covered with cycloid 

 scales of somewhat small size ; cleft of the mouth imrrow. Lateral 

 line without any annature. The fii'st dorsal continuous, mth ten or 

 eleven spines ; the second and the anal are more developed, and have 

 no detached finlets ; no separate anal spines. The ventral is long 

 and broad, attached to the belly by a membrane, and can he received 

 in a fissure of the abdomen. Teeth small, forming single series in 

 the jaws ; teeth on the vomer and the palatine bones. Pyloric ap- 

 pendages very numerous. Air- bladder present ; branchiostegals six. 



Tropical parts of the Atlantic ; Indian Ocean and Archipelago. 



1. Nomeus gronovii. 



Gobius, sp., Gronov. Zoophyl. p. 82. no. 278. 



gronovii, Gm. p. 1205. 



Eleotris mauritii, Bl. Schn. p. 66. 

 Gobiomorus gronovianus, Lacep. ii. p. 584 



2c2 



