16 IV. Pisces für 1898. 



Mackerei Investigated p. -342. IV. Size of the Mackerei Investigated 

 p. 245. V. Sex (Numerical pro})ortions, Secondafy »Sexual Characters) 

 p. 249. VI. Nuinber of Transverse Bars p. 253. VIIT. Shapc of Trans- 

 verse Bars p. 261. VIII. Dorsolateral Intermediate spots p. 263. 

 IX. Niimber of Finrays in First Dorsal Fin p. 267. X. Corielation bet- 

 ween Spottiness and Number of First Dorsal Finrays p. 276. XI. 

 Number of Firnays in Second Dorsal Fin p. 278. XII. Number of Dorsal 

 Finlets p. 280. XIII. Correlation between Second Dorsal Fin and 

 Dorsal Finlets p. 281. XIV. Summarv of Evidence concerning the 

 Races of the Mackerei p. 284. XV. The Migrations of the Mackerel 

 p. 286. 



Als Resume über die Rassen des Scomber scomber: ,,the mackerel, 

 which frequent British Waters are not exactly alike in all localities, 

 but possess certain average peculiarities which distinguich one local 

 race from another. These peculiarities are greatest between the races 

 of localities, which are geographically remote, and least between^ those 

 which occupy areas that are geographically contiguous. Between the 

 mackerel of the Nortli Sea and English Channel there are no differences 

 at all ; but the Irish race is distinctly divisable into two Stocks, one of 

 which is restricted to the west Coast, the other to the south. A con- 

 siderable amount of mixture takes place between the southern Irish 

 stock and the fish which frequent the mouth of the English Channel. 

 The wesbern Irish stock represents more closely than any other race 

 the primitive type of mackerel, from which all, whether British or 

 American, have been derived." • 



— i'i). Malformation of the Mouth in the Common Sea-Bream. 

 In: Journ. Mar. Biol. Assoc. (2) V. p. 345 — 7. 



Sparus centrodontus mit mißgeljildetem Mund, indem Inter- 

 maxillare und rechtes Maxillare fehlen. Die Ursache dürfte in einer 

 Verletzung zu suchen sein. 



GaskcU, W. H. On the origin of Vertebrates, deduced from 

 the study of Ammocoetes, Part III. On the Origin of the Branchial 

 Segmcntation. In: Journ. Anat. Phys. norm. Phathol. (2) 13. p. 154 

 —188. Figg. Taf. III. Ref. in: Zool." Jahresber. 1898. p. 92. 



Oiglio-Tos, E. I trombociti degli Ittiopsidi e dei Sauropsidi. In: 

 Mem. Ac. Torino (2) 48. p. 143 — 208. 2 pls. — Französisches Resümee in : 

 Arch. ital. Biol. 29. p. 287— 293. — Ref. in: Zool. Jahresber. 1898 

 IX 65. 



iiillmU i\ H. (I). The Fishes of Klamath Basin. In: Bull. U. S. 

 Fish Comm. XVII. p. 1—13. Figg. 



— (2). On the occurrence of Caulolepis longidens Gill on the 

 Coast of California. In: Proc. U. S. Nat. Mus. 21. p. 565—6. 



Vorkommen ; ausführliche Dimensionsangaben. 



<i!in>ert, C". H. and ScoHcId, .\. K. Notes on a Collection of Fishes 

 from the Colorado Basin in Arizona. In: Proc. U. S. Nat. Mus. 20. 

 p. 487—99. pls. 36-^9. 



Verzeichnet, mit Dimensionen und mehr oder weniger ausführlichen 

 Beschreibungen: Panfosfeiis nrlzonae Gilb. ii. sp. {abgeb.), Catostomus 



