CYCLOSTOMATA, LEPTOCARDII. FlSCGS 41 
Gill, T. Note ou the Myzonts or Marsipobrauclriates P. U. S. Nat. 
Mus. v. pp. 51G & 517. 
. Note on the Bdellostomidce and Myxinidca. L. c. pp. 517- 520. 
. Note on the Petromyzontids. L. c. pp. 521-525. 
Contains a synopsis of the genera of the family Petromyzontidcc. Jl 
Owsiannikow, P. Uber das sympathische Nervensystem der Fluss- 
neunauge, nebst cinigen histologischen Notizen liber andere Gewebe 
desselben Thieres. Bull. Petersb. xxviii. pp. 439-448. 
Parker, W. K. On the Skeleton of the Marsipobvanch Fishes. Phil. 
Tr. 1883, pt. ii. pp. 373-457, pis. viii.-xxvi. Part i. The Myxinoids 
( Myxine and Bdellostoma). Part ii. Petromyzon. Extract in P. R. 
Soc. xxxiv. pp. 439-443 & 447-449. 
Scott, W. B. On the Development of the Pituitary body in Petromy- 
zon j, and the Significance of that Organ in other Types. Science, ii. 
pp. 184-186 (with woodcuts). 
• •. On the Development of the Teeth in the Lamprey. L. c. 
pp. 731 & 732 (with woodcut). 
G. B. Goode has notes on the Petromyzontidce ; Bull. U. S. Fish. Comm, 
ii. pp. 349-354. 
J ordan & Gilbert remark on the genera of the same family ; P. U. S. 
Nat. Mus. vi. p. 208. 
Petromyzon marinus, L. Note on the breeding of this species by Ferry, 
C.R. xcvi. pp. 721-723, and Ann. N. H. (5) xi. p. 388. 
Petromyzon marinus dorsatus , subsp. n., Wilder, in Jordan & Gilbert’s 
Syn. Fish. N. Am. p. 869, Cayuga Lake, New York. 
Petromyzon planeri, Bl. ; A. E. Turinca, Znan. i umjet., Rad Jugoslav. 
Ak. lxi. pp. 105-119, pi. 
Bathymyzon, subg. n. of Petromyzon (from which it differs in the 
absence of odontoid tubercles on the supra-oral and infra-oral plates), for 
B. bairdi, sp. n., Gill, P. U. S. Nat. Mus. vi. p. 254, lat. 40°, long. 68° 50', 
547 fath. 
LEPTOCARDII. 
Gill, T. Note on the Leptocardians. P. U. S. Nat. Mus. v. pp. 515 
& 516. 
Roiion, T. Y. Untersuchungen fiber Amphioxus lanceolatus. Ein Bei- 
trag zur vergleichenden Anatomie der Wirbeltbiere. Deuk. Ak. 
Wien, xlv. Abth. 2, pp. 1-61, pis. i.-vi. 
1883. [vol. xx.] 
B 12 
