32 Pisces. 
PISCES. 
Argentina sialis , n. sp., Gilbert, P. U. S. Nat. Mus. xiii, p. 56, Pacific 
coast of N. America. 
\> Leuroglossus , n. g., allied to Argentina , for L. stilbius, n. sp., id. t. c. 
p. 57, Pacific coast of N. America. 
Bathylagus pacificus , n. sp., id. t. c. p. 55, Pacific coast of N. America. 
CliUPElDiE. 
Holt, E. W. L. Some Stages in the Development of the Brain of 
Clupea harengus. Abstract. P. R. Soc. xlvji, pp. 199-202. 
G. Pouciiet, J. de l’Anat. Phys. xxvi, pp. 620-629, publishes a report 
of observations relating to the biology of the Sardine on the French 
coast in 1889. 
Clupea pilcharduSj Walb. : note on specimens with the number of 
scales abnormally increased ; Bateson, P. Z. S. 1890, p. 586. 
Etrumeus acuminatus , n. sp., Gilbert, P. U. S. Nat. Mus. xiii, p, 56, 
Pacific coast of N. America. 
Engraulis enchrasicholus , L. : on its occurrence in Scottish Waters ; 
J. C. Ewart, P. Phys. Soc. Edinb. 1889-90, p. 333. 
ALEPOCEPHALIDiE. 
Bathytroctes stomias , n. sp., Gilbert, P. U. S. Nat. Mus. xiii, p. 53, 
Pacific coast of N. America. B. squamosus , n. sp., Alcock, Ann. N. H. 
(6) vi, p. 303, Arabian Sea, 740 fath. 
^ Narcetes , n. g., closely allied to Bathytroctes , Gthr. Head naked. Body 
rather elongate, compressed, covered with scales of moderate size. Eye 
rather small. Mouth wide ; maxilla extending beyond the vertical 
through the middle of the orbit. Fine teeth in premaxillao, maxillae, 
mandible, palatines, and vomer, those in the premaxillae and mandible 
pluriserial ; no teeth on the tongue. Gill-openings wide ; gill-covers 
complete ; seven branchiostegals ; four gills, with narrow laminae ; gill- 
rakers long. Pseudobranchiae present. No adipose dorsal fin. Caudal 
forked. Pyloric caeca in moderate numbers. Ovaries with an oviduct. 
N. erimelas , n. sp., id. t. c. p. 305, Arabian Sea, 740 fath. 
Aulastomatomorpha } n. g. Head naked, Body elongate, covered with 
minute hardly imbricate scales. Anterior bones of the head produced 
into a long tube terminating in a narrow mouth. Margin of the upper 
jaw formed equally by the premaxillae and maxillae. Uniserial teeth, 
in the jaws only. Eye large. Gill-cover apparently complete. Gill- 
opening wide below, contracted above, and not surpassing the level of 
the pectoral fin ; four gills with narrow laminae. Pseudobranchiae almost 
rudimentary. Dorsal fin belonging to the caudal portion of the body ; no 
adipose dorsal. Anal fin very long. Caudal forked. Pyloric caeca few, 
small. No air-bladder. A. phospherops t n. sp., id. t. c. p. 307, Arabian 
Sea, 1000 fath. 
Bathyonus glutinosis f n. sp., id. t. c., p. 211, off Madras coast, 1310 fath. 
Tauredophidium, n. g., allied to A canthonus y Gthr. Head large and 
