3. SIEEMBO. 373 



tends forwards nearly to the sjTuphysis of the lower jaw ; giUs four, 

 pseiidobranchia) none ; air-bladder rounded posteriorly, fixed to the 

 base of the skull. ]*yloric ajjpendages none. Male with an anal papilla. 

 Inhabitants of subterranean fresh waters in Cuba. 



1. Lucifaga subterraneus. 



Poey, I. c. p. 9G. lam. 11. fig. 1 (head), laiu. 10. figs. 1-4 & G-8, and 

 lam. 11. figs. 2-5 & 18 (anatomy). 



B. 7-8. D. 70. A. 70. Vert. 11/36. 

 Nape of the neck scarcely elevated, and generally scaly ; cleft of the 

 mouth wide. Teeth in the jaws villiform ; none on the palatine bones. 

 Cuba. 



2, Lucifuga dentatus. 



Poey, I. c. p. 102. lam. 9. fig. 1 ; lam. 10. figs. 5, 6 & 9; lam. 11. figs. 6-8, 

 15 & 17 (anatomy). 



B. 7. D. 90. A. 70. Vert. 11/37. 



Nape of the neck elevated and naked ; the length of the head is 

 two-sevenths of the total ; cleft of the mouth wide. A series of 

 strong teeth on the palatines and along the edge of the mandible. 



Cuba. 



3. SIBEMBO. 



Sirembo, Bleek. Act. Soc. Sc. Indo-Nederl. iii. Japan, iv. p. 22. 

 Brotella, Kaup in Wiegm. Arch. 1858, p. 92. 



Body elongate, covered with very small scales ; lateral line simple, 

 more or less indistinct. Eye of moderate size. Vertical fins united ; 

 each ventral reduced to a single filament, both close together, but 

 each with a distinct base, inserted at the foremost part of the hu- 

 meral symphysis. Bands of villiform teeth in the jaws, on the 

 vomer and the palatines. Upper jaw overlapping the lower. Snout 

 without barbels. Eight branchiostegals ; pseudobranchise and air- 

 bladder present. Pyloric appendages in moderate number. 



Japanese Seas. 



1 . Sirembo imberbis. 



]3rotula imberbis, Schley. Faun. Japan. Poiss. p. 253. pi. 111. fig. 3. 

 Sirembo imberbis, Bleck. I. c. p. 24. 

 Brotella imberbis, Kaup, I. c. 



D. 95. A. 75. Caec. pylor. 12. 



Operculum with a strong spine posteriorly. Ventral inserted in 

 the vertical from the extremity of the maxillary, or a little in ad- 

 vance of the posterior margin of the orbit. The dorsal commences 

 behind the root of the pectoral. The distance of the vent from the 

 head is a little more than the length of the latter. Vertical fins 

 edged with blackish. 



Japan. 



a. Japan. 



