85 Pisces » 
PISCES. 
present; gill-rakers long, lanceolate; pyloric appendages in moderate 
number ; ova rather small. B. microlepis^ p. 249, off Cape St. Vincent, 
rostratus, p. 260, off Pernambuco, Gunther, Ann. N. H. (5) ii. spp. nn. 
Xenodermichthys, g. n. Body rather elongate, compressed, without 
true scales ; skin rather tough, finely longitudinally wrinkled, with 
numerous nodules, regularly arranged ; minute, rudimentary, scale-like 
productions embedded in the skin, especially on the trunk ; mouth very 
small, with feeble jaws and rudimentary teeth in intermaxillary and 
mandible, and a few in maxillary ; palate toothless ; dorsal and anal 
fins equal in length ; caudal forked ; gill-opening wide, but not much 
extending above level of pectoral ; gills well developed, with long gill- 
rakers ; pseudobranchise. X. nodulosus, sp. n., id. 1. c. p. 260, south of 
Yeddo. 
AlepocepTialus niger^ sp. n., id. 1. c., p. 248, N. Australia. 
Alepocephalus rostratus, Bisso : on the bones of the head ; Gegenbaur, 
Morph. JB. iv. suppl. pp. 1-42, pis. i. & ii. 
HALOSAERIDiE. 
V 
Halosaurus macrochir, p. 260, rostratus, p. 261, Atlantic, spp. nn., 
Gunther, 1. c. 
Gymnotidjj. 
Fritsch, — . Considerations on the Position of the Gymnotini in the 
> System. SB. nat. Fr. 1878, pp. 6-7. 
( A further remark is added by E. von Martens, 1. c. p. 10. 
Sternarchus halcenops, sp. n.. Cope, P. Am. Phil. Soc. xvii, p. 682, Peru. 
. MuRiENIDiE. 
I Tiegel, E. Vom Riickenmark der Schlangen undder Aale. Arch. ges. 
I Phys. xvii. pp. 694-600. 
/ An account of experiments on the spinal marrow of [snakes and] the 
.. eel conducted in the Physiological Laboratory at Tokio in Japan. 
Diagnoses, synonymy, and figures of the Indian Murcenidce, belonging 
to 10 genera ; Day, Pishes of India, pp. 668-676, pis. clxviii.-clxxii. 
Saurenchelys petersi, sp. n., id. 1. c. p. 663, pi. clxxviii. fig. 6, Orissa. 
Ophichthys microcephalus, sp. n., id. 1. c. p. 669, pi. clxx. fig 2 
Malabar. , 
Ophichthys episcopus, sp. n., Castelnau, P. Linn. Soc. N. S. W. ii. 
p. 244, Moreton Bay. 
\ Nemichthys infans, sp. n., Gunther, Ann. N. H. (6) ii. p. 261, Atlantic. 
Cyema, g. n. Type of a new group of Murcenidce allied to the Nemich- 
thyina. Combines the form of snout of a Nemichthys with soft short 
body of a Leptocephalus ; but the gill-openings are very narrow and 
