DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 171 



supplementary ray beliiud the last. The anal spines are longer than the dorsal spines, the 

 longest two and one-half times the diameter of the eye. The first, which is somcwliat longer 

 than the fli-st dorsal spine, situated beliind the vent and under the eighteenth dorsal spine 



In the specimen figured and described by Vaillant there is a semblance of a minute, 

 separate caudal tin, but it is by no means certain that this exists. The pectoral is placed 

 a considerable distance fi-om the operculum, nearly equal to the length of the snout, and 

 its lower axil is iu the median line of the body, or nearly so. Its length is about equal 

 to that of the snout. Tlie ventrals, situated at a distance from the snout equal to about 

 one-third of the length of the body, do not reach the anus, and are the same size as the 

 pectorals. In Vaillant's specimen tliey appear to be separate, and he was able to observe 

 but a single spine. The color, in fresh condition, was milky white; the head and iris black. 



Radial formula, D. 29-37 ; A. 34-41. 



This species was known to Eisso, who had in his collection the specimen winch after- 

 wards served De Filippi as a type and which is now in the Turin Musemn. A sketch by 

 Eisso, of this fish, is here reproduced. The Turin specimen was examined by Prof. Giglioli 

 in 18S2: it is IfiO millimeters long and has tlie following radial formula: D. 29/1 ; A. 35. 



Prof. Giglioli has three specimens iu his collection at Florence. We are indebted to 

 him for the following details concerning them : 



(I. Nice, August 5, 1881 (type of Paradaxichthys Oarihaldianiis): Total length, 199 millimeters. D. 32/0; A. 

 38/100; P.9-10; V.1-10; C.4?. This spei'imen has a long, straight siiiiie, pointed backwards, above the 

 maxillary boue on either side. 



b. Nice, March 1, 1891 : Total length, 186 millimeters. D. 30/1; A. 41/150; P. 10; V. 1/10C.4?. Found dead 



and partly decomposed. The peculiar maxillary spine is small in this and in the following specimen. 



c. Nice, January 27, 1892 : Total length, IGO millimeters. D. 30/0; A. 34/?. Found partially digested in the 



stomach of Galeus canis. 



In addition to these specimens, one other was taken by the French expedition off the 

 coast of Morocco, station 40, at a depth of 2,212 meters. Its radial formula was D. 37/1; 



A. 27/ ']. 



MACDONALDIA, Goode and Bean, n. g. 



Notacanthids, with elongate body and inferior mouth. Body and head covered with 

 minute, imbricated scales. Dorsal fin represented by numerous short, straight, robust and 

 disjoined si)ines, 27 to 34 in number, the first in advance of the insertion of the pectoral. 

 Anal as in N'otacanthus, but lower, and with a longer portion of low, short, slightly curved, 

 disjoined spines, from 35 to 55 in number, which under the final dorsal spines pass into tlexi- 

 ble rays. Lateral line straight, conspicuous. Pectorals moderate, placed far back, below 

 the middle line of the body, and remote from the lateral line. Teeth iu jaws erect, small ; 

 and also in series on the vomer and palate. A line of pores on the inner edge of the mandi- 

 ble. Ventrals moderate, entirely sej^arate. 



Tills genus is named in honor of Col. Marshall MacDonald, U. S. Commissioner of 

 Fisheries, in ccmnnemoratiou of his liberal policy in furthering ichthyological research. 



MACDONALDIA ROSTRATA, (Collett), Goode and Bean. (Figures 189; 195 A, B.) 

 Notacanthus rosiraliis, Collett, Bull. Soc. Zool., France, 1889, 307. 



The body is greatly compressed, its outlines tapering rapidly iu both directions from 

 the origin of the vent. Its greatest height is contained 3.J times iu the distance of the vent 

 from the tip of the snout, or about four-fifths the length of the head, which is contained 9.^ 

 times in the total. The snout is compressed, pointed, snake like, i)roduced beyond tlie mouth 

 a distance less than the diameter of the eye and contained 3 times in the length of the 

 head. The mouth is small; its cleft scarcely reaches to the anterior nostril. Each jaw is 

 armed with a series of n:inute teeth and a similar series on vomer and palate;. The eye is 

 moderate in size, placed not far from the dorsal profile, distant about 2.^, diameters fioui 

 the end of the snout, more than 3 diameters from the end of the onercle. Gill opening wide. 



