Jordan and Evermann. Pushes of North America. 2749 



Page 49. Lamna cornubica, the salmon shark, is abundant and destruc- 

 tive to salmon on the coasts of southern Alaska, especially about Kadiak, 

 where it was seen by us. 



Page 53. Under Squalidce, read ovoviviparous for "oviparous." 



Page 54. Squalus sucklii has been but once recorded from Bering Sea. 

 (Bering Island. Coll. Dr. L. Stejneger.) It is very abundant at Kadiak. 



Page 60. Pristis perrotteti is not authentically known except from 

 the rivers of Africa. Our west coast species is doubtless distinct and 

 should stand as Pristis zcplnjreus. Pristis pectinatiis occurs northward at 

 least to Beaufort, North Carolina. (Specimen 12| feet long. Coll. H. H. 

 Brimley.) 



Page 61. After the synonymy of Pristis pectinatus insert: 

 80(a). PRISTIS ZEPHYREUS, Jordan & Starka. 



(FEZ DE ESPADA.) 



Snout to nostrils, 3 in length to base of caudal; breadth of saw at 

 anterior end between first 2 pairs of teeth $ breadth of its base behind 

 the last pairs; teeth on saw trenchant behind, arranged in 22 pairs; 

 hinder teeth wide apart, the interspaces 5 times their base ; posterior teeth 

 turned slightly backward, a groove on their posterior edge; front teeth 

 not quite as long as the saw is broad at their base ; distance between 

 first and second tooth 3 times base of first. (Other specimens examined 

 for us by Dr. G. W. Rogers show 18 to 21 pairs of teeth.) Eye equal to 

 spiracle, contained 3 times in base of saw just behind last pair of teeth; 

 width of mouth a little greater than base of saw; mouth with about 65 

 series of blunt teeth ; slant height of pectoral in front a little more than 

 half distance from tip of snout to mouth. Dorsals subequal; first dorsal 

 inserted in advance of ventrals, about \ its base over ventrals; caudal 

 with a lower lobe, which is equal to slant height of pectoral; tail \\ith a 

 keel on side. Color plain olive gray above, light below. Measurements: 

 Length 50 inches; caudal 7 inches; pectoral 7 inches; dorsal front 5J 

 inches; snout without nostril 11 inches. Type: A skin in L. S. Jr. Univ. 

 Museum. Common in brackish waters at the mouth of the Rio Presidio, 

 where 1 fine specimen was obtained. The species is also recorded (as 

 Pristis perrotteti) by Dr. Gilbert from Mazatlan, and by Dr. Giinther from 

 Chiapas. Dr. Giinther identifies this species with Pristis perrotteti described 

 by Miiller & Henle, from the Senegal River. In view of the great differ- 

 ence in the fauna of the Gulf of California from that of equatorial 

 Africa this identification may be questioned, especially as there are- 

 several details in which the description of P. perrotteti differs from our 

 specimen. 



P-ristM zephyreus, JORDAN & STARKS, Fishes of Sinaloa, 383, 1895, Mazatlan, Mexico. 

 (Coll. Hopkins Exped. to Sinaloa.) 



