PHYSOSIOMI, LOPHOBRANCHII. 
101 
Group I. Ptyobranchina. 
22. Moringua (Gray), with 6 species. 
MuRiGNIDiE ENaYSCHIBTJE. 
Group K. Mub^nina. 
^ 23. Mtjroconger compressus, g. et sp. n., St. Helena, p. 93. 
24. Murama (Gthr.), with 104 species. New are : — M. dovtif from Panama, 
p. 103 ; M. microspila, from the East-Indian archipelago, p. 109 ; M. 
sancim helence, p. 116; M. callorhyncha^ from Freemantle, p. 122; M. 
eiiptcra, from Raoul Island, p. 122. 
26. Gymnonmrccim (Blkr.), with G species, one of which is new, viz. G. 
hennettii, from the Mauritius, p. 135. 
2G. Enchelycore (Kaup), with 2 species. 
In an appendix to this family the author treats of the Lepto- 
cephalid<je. He distinguishes between really Leptocephaline forms 
and such as have been very improperly referred to the same 
group. He is inclined to regard the former as the offspring 
of Muraenoids, but as individuals arrested in their development 
at a very early period of their life, yet continuing to grow to a 
certain size without corresponding development of their external 
organs, and perishing without having attained the characters of 
the perfect animal. To this form belong all the various Lepto- 
cephali and Hyoprorus. Tilurus is a similar form arrested in its 
development, but cannot he the offspring of a Mursenoid fish. 
Siomiasunculus (Kaup) is the young of Siomias, Porobronchus 
(Kaup) the young of Fierasfer acus, and Esunculus (Kaup) proba- 
bly that of Alepocephalus, 
Ophichthys serpens is described and figured as Ophisurus novce zelandiee 
(sp. n.) by Dr. Hector, Tr. N. Z. Inst. ii. 1870, p. 34, pi. 3. With anatomi- 
cal notes by Knox. 
Gymnothorax argus, sp. n., Steindachner, SB. Ak. Wien, 1870, Ixi. p. 639, 
taf. 4, west coast of Mexico. ; 
Murama nigra, sp. n.. Day, P. Z. S. 187jO, p. 702, Andaman Islands. 
Pegasid^. 
These fishes are not Lophobranchs ; they resemble, in several 
points, even the Acanthopterygians ; and Prof. Steenstrup places 
them with the Cataphracti. Gunther, Fish. viii. p. 146. 
Pegasus volans (L.) figured by Dum^ril, Ichth. g^n^r. ii. pi. 26. fig. 1 (P. 
laternarius). 
LOPHOBRANCHII. 
Dr. Gunther has arranged, these fishes as follows (Fish. viii. 
p. 150) 
Fam. 1. SOLBNOSTOMID^. 
1. Solenostoma (Lac.), with 3 species. 
