104 
PISCES. 
Orthagoriscus. Giinther, /. c. p. 317, distinguishes only two European 
species, O. mala and truncatus. 
Orthagoriscus and Molacanihus. Putnam does not think that the latter 
can be the young state of the S unfish. An abstract of his paper is published 
in Amer. Natur. iv. 1870, pp. 629-633. 
f Orthagoriscus mola. F. Wahlgi-en describes and figures an old example 
/ {Mola nasus) in Act. Univers. Lund f. 1867 (1868), pp. 18, with a plate. 
CYCLOSTOMATA. 
, Gegenbaur, C. Ueber das Skeletgewebe der Cyclostomen. 
I Jena. Zeitschr. v. 1870, pp. 43-53, Taf. 1. [On the tissue 
' of the skeleton of Cyclostomata.] 
I Petromyzon. A paper by Mr. G. Gulliver “ On certain points in the 
! anatomy and economy of the Lampreys” (P. Z. S. 1870, pp. 844-850) treats 
j of the blood-corpuscles, fin-rays, eye, and organs of generation. 
' Petromyzon omalii figured by Van Beneden in M^m. Ac. Belg. xxxviii. 
j 1870, pi. 8. — Dr. Gunther regards this fish as identical with P. Jiuviatilis^ 
‘' Fish. viii. p. 603. 
' Myxine ajfinis, sp. n., Gunther, Fish. viii. p. 611, hab. — ? 
LEPTOCARDII. 
Amphioxus lanceolatus. Observations on the structure of the notochord 
{ by E. Moreau, Compt. Bend. 1870, Ixx. pp. 1006-1008 ; and on the cranial 
\ region, pp. 1189-1191. 
