PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 661 



blood-red particles or scale-like forms characteristic of red hematite 

 Wheu the light is shut off from below the stage of the microscope the 

 quartz appears as a black opaque mass traversed by aii irregular uct- 

 work of anastomosing red lines. The included scales are, apparently, 

 sufficiently abundant and evenly disseminated to fully account for the 

 red color of the pebbles. Besides the hematite the quartz grains con- 

 tain numerous minute cavities, some of which are empty, while others 

 contain a liquid and bubble. Numerous very small colorless needle-like 

 <jrystals are also present, penetrating the quartz in every direction. 



DEJ^CRIPTIOIV OF A IVEW .SPECIE>« OF AI.F PIDOSAURIJS (A. JE»CJJ. 

 JLAPBU.S) FK0.7I AL,A»BiA. 



BY TA2iLETO]\ II. BEAIV, 

 Curator, Dcparlmtnt of Fishes, U. S. Xalional Museum. 



The lish here to be described as the type of a new species was at 

 tirst referred by me to A.ferox* It is number 27705 of the National 

 Museum Register. Another example of the same species was previously 

 taken at Unalashka by Mr. W. H. Dall. The type of the species was 

 obtained at lliuliuk, Unalashka, October 7, 1880, by Mr. Robert King, 

 at his wharf. Mr. King first saw the dorsal fin of the fish emerging 

 from the water, and this attracted his attention. The animal came up 

 into shoal water, and acted as if it meant to go on the beach. Mr. King 

 thrust a spear into it and thus secured it. In the stomach I found 

 twenty-one individuals of Eumicrotrenms spinosus, most of them adult, 

 and one small squid. A cod-like lish was said to have been in the 

 stomach also, but I did not see this. It is probable that the fish was 

 driven ashore from the adjacent deep water by the torture of a parasite 

 found in its flesh; this parasite has been identified with the genus 

 Tetrarhynchus by Mr. F. W. True. It is said to be not an uncommon 

 thing for the "wolf-fish," as this AJeindosaurus is styled, to throw itself 

 on the beach at lliuliuk. 



It should be stated that the first notice of my species is published in 

 Bulletin 16, Q. S. National Museum, pages 888 and 880; this volume ap- 

 peared early in April, 1883, but the original description was prepared 

 much earlier than that date and the printing of it was delayed longer 

 than was anticipated. 



AUindosannis ^J^Jsculcqyius differs from A.ferox chiefly in the much 

 shorter pectorals and ventrals and in the smaller luimber of ventral 

 rays. Owing to the somewhat mutilated condition of the specimen, 

 only the skin was preserved in alcohol after full measurements had 

 been recorded. 



Description. — The length to the origin of the middle caudal rays 

 was 1,L'98 millimeters. The greatest height of the body (123 millimeters) 

 is contained 10^ times in the standard length. The depth at the ven- 

 * Pioc. U. S. Nat. Mus. IV, p. 259, Dec. 24, ISHI (name only). 



