Jordan and Ever ?nann. Fishes of North America. 617 



and palate. A line of pores on the inner edge of the mandible. Ventrals 

 moderate, entirely separate. (Named for Col. Marshall McDonald, United 

 States Commissioner of Fish and Fisheries, " in commemoration of his 

 liberal policy in furthering ichthyological research." ) 



a. Dorsal xxvin; anal XLII or XLIII. ROSTRATA, 915. 



<m. Dorsal xxxv; anal about XL. CHALLENOERI, 916. 



915. MAODONALDIA ROSTRATA (Collett). 



D. XXVIII; A. XLII or XLIII. Body greatly compressed, its outlines 

 tapering rapidly in both directions from origin of vent, its greatest 

 height 3| times in distance of vent from tip of snout, or about length 

 of head, which is 9i times in the total; snout compressed, pointed ? 

 snake-like, produced beyond the mouth a distance less than diameter of 

 eye, 3 in head. Mouth small, its cleft scarcely reaching to the anterior 

 nostril. Each jaw armed with a series of minute teeth and a similar 

 series on vomer and palate. Eye moderate in size, placed not far from 

 dorsal profile, distant about 2 diameters from the end of snout, more 

 than 3 diameters from end of opercle. Gill opening wide. The body 

 and head covered by minute, imbricated scales ; a line of mucous pores 

 extending from anterior end of lateral line forward under the eye to 

 end of maxillary. Dorsal spines short, distant from one another, the first 

 being over end of opercle, fifth slightly behind origin of pectoral, the 

 twelfth slightly in advance of origin of pectoral, the fifteenth almost 

 over origin of anal, and the last (twenty-eighth) a little behind middle 

 of length of tail. In another individual the fourth spine is immediately 

 over the pectoral insertion, the thirteenth over the ventral origin ; the 

 whole number of spines is 30, but there is behind the thirtieth a minute 

 spine almost united by membrane. Anal beginning immediately behind 

 the vent ; after the fifth spine the height of the fin remains uniform 

 until the length of the rays gradually decreases near tip of tail ; pecto- 

 ral inserted at a distance from the gill opening nearly twice its own 

 length; ventrals with a broad base, not confluent, and reaching to vent 

 or slightly beyond it. 



Specimens obtained by the Albatross at Station 2216, in 963 fathoms, 16 

 and 16 inches long. Another specimen, 17 inches long, was obtained by 

 the Albatross at Station 2553, in 551 fathoms. The Hirondelle took it off 

 Newfoundland, in 633 fathoms, (rostrata, long-nosed.) 



Notacantln/x roxtratms, COLLETT, Bull. Soc. Zob'l. France, 1889, 307, off Newfoundland. 

 MacdonalHa rodntta, GOODS & BEAN, Proc. U. S. Nat. Mus., 1894(1895), 407, pi. 18, fig. 2, and 

 in Oceanic Ichthyology, 173, figs. 189, and 195 A and B, 1895. 



916. MACDONALDIA CHALLENGERI (Vaillant). 



Head 3 ; depth 5. D. XXXV ; A. about XL, 140 ; B. 6 ; C. 5 ; P. 11 ; V. 

 I, 9. Greatest depth of body opposite vent, and i of distance of vent 

 from end of snout; length of the long, narrow, compressed head J- of 

 the same length. Snout compressed, pointed, much produced beyond 

 the narrow mouth, the cleft of which laterally extends to below posterior 

 nostril; each jaw armed with a series of fixed minute teeth; a similar 

 palatine series within the intermaxillary series; the mandibular aeries 



