180 Dr. A. Guntlier on Deep-sea Fishes 



Body covered with minute cycloid scales. Lateral Hue wide. 

 Body irregularly mottled with brown. 

 Fidji Islands, 215 fathoms. 



Coitus hatliyMus. 

 D. 5 I 10. A. 7. P. 17. V. 3. 



The prgeoperculum is very strongly armed ; there are two 

 spines arising from the same root at the angle, one in front of 

 the other, the posterior being longer than the eye ; three other 

 shorter spines along the. lower edge of the prseoperculum ; 

 operculum with a small spine at its antero-inferior angle. A 

 pair of spines on the occiput behind a deep depression occupy- 

 ing nearly the whole of the vertex. Eyes longer than the 

 snout, close together. Minute teeth on the vomer, but none 

 on the palatine bones. Pectoral fin extending beyond the 

 origin of the anal ; ventrals not reaching the vent. Mucife- 

 rous system much developed, opening by wide pores along 

 the lower jaw, the prgeoperculum, the infraorbital ring, and 

 the lateral line. Greyish brown ; throat and all the fins 

 black. 



Japanese seas, 565 fathoms. 



Echiostoma microdon. 

 D. 24. A. 29. P. 3. V. 7. 



The length of the head is more than one fifth of the total 

 (with the caudal). No separate pectoral ray; root of the 

 ventral considerably nearer to the base of the caudal than to 

 the extremity of the snout. All the teeth rather small, a few 

 only in the middle of the palatine bone. Black ; two lumi- 

 nous organs below the eye ; a narrow elongate one above the 

 maxillary, and a small short one nearer to the eye. 



Off the north-west coast of Australia, 2440 fathoms. 



Echiostoma micripnus. 

 D. 21. A. 23. P. 1/3. V. 7. 



The length of the head is nearly one ninth of the total (with 

 the caudal). Barbel much longer than the head, and fringed at 

 its extremity ; the anterior pectoral ray filamentous and di- 

 stinctly separated from the others. Root of the ventral rather 

 nearer to the extremity of the snout than to the root of the 

 caudal. Black ; luminous organ above the maxillary small, 

 round, like a rudimentary eye. 



Off the south coast of Australia, 2150 fathoms. 



