134 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



lu'iul is longer than the distance between it and tbe root of the ventral. Tlie supramaxil- 

 hiry reaches the vertical of the front niarsni of the eye. The dorsal is entirely behind the 

 ventrals; the anal ;;ommences as far behintl the root of the ventrals as the latter is behind 

 the preoperenliini; the pectorals nearlv reach backward to tbe ventrals. The squauiatiou 

 is similar to that of the .4. macroehira. 



Kadial formula: B. 12; D. I 10-11; V. I, 8. 

 The type of this description (No. 32281) was obtained by the Albatross at station 2037, 

 iat. 380 5;5' N.^ Ion., (V.)° 23' 30" W., at a depth of 1,731 fiithonis. Others were obtained 

 from stations 2051, 1,1 0(i fotlioms; 2035, 1,362 fathoms; 2052, 1,098 fathoms. 



ALDKOVAJMDIA PHALACRUS, (Vailla^'T). (Figure 156.) 



Halosaurua phalacrua, Vaillant, Exp. Sci. Trarailleur et Talisman, 185, pi. xv, fig. 3; pi. xvi, figs. 1— Ic. 



In appearance and in general proportions this species approaches the Halosaurns 

 maerochir of Glinther, being, however, a little more slender, so that the height is less than 

 one-twentieth of the total length; the body is a little more compressed. 



The head is one-ninth of the total length ; it is equally depressed below and notably 

 more elongate, so that the muzzle is spatidiform. The snout is three-sevenths of the length 

 of the head, the preoral portion occupying its anterior third. The horizontal diameter of 

 the eye equals the width of tlie interorbital space and is one-seventh of the length of the 

 head. Scales on the operculnni and the temporal region; upper part of the head naked. 



The origin of the dorsal is at a distance from the tip of the snout equal to the length of 

 the head. Pectorals not reaching to the insertion of the ventrals, which are at a distance 

 from the gill opening notably less than the length of the head; the ventrals are short and 

 jdaced in advance of the dorsal. This fish in the fresh state shows a flesh pink tint; the 

 anal dusky, approaching to brown; the head bluish black. Total length (millimeters), 4.'!0; 

 height, 20.04 ; thickness, 13.03; length of the head, 53.12; lengthof the snout, 24.45; diame- 

 ter of tbe eye, 8.15; width of interorbital space, 8.15. 



Radial formula: B. 10; D. 1, 9; A. 200; ? Y. 1, 7. 



The examples recorded by Vaillant are from off the coast of Morocco, Soudan, and the 

 Azores, in depths ranging from 1,103 to 2,220 meters. 



ALDROVANDIA GRACILIS, Goode and Bean, u. s. (Figure 157.) 



This is a very slender species and resembles H. rostratuSj from which it differs in having 

 a larger eye, a smaller number of modified scales in the lateral line, and in having the vent 

 placed more posteriorly. The description is made from the Albatross six^ciinen taken at 

 station 2380. The length of this individual is 490 nullimeters. The greatest height of tbe 

 body (24 millimeters) is contained 20^ times in the total length, and about 2.J times in the 

 length of tbe head. The greatest width of the body (17 millimeters) is two-thirds of its 

 greatest height. TIk^ length of tbe head ((50 millimeters) is contained 8* times in tbe total. 

 The greatest wid<h of tbe bead (17 millimeters) equals the length of the maxilla. Distance 

 from the end of tbe mouth to the tip of tbe snout (11 millimeters) equals nearly one-fifth 

 the length of the bead. Tbe length of the snout (27 millimeters) is a little greater than 

 the length of tbe mandible. Tbe width of tbe interorbital si)ace (7 millimeters) is about 

 one-fourth the length of the snont and three-fourths tbe length of the eye. Tbe maxilla 

 extends to slightly beyond tbe anterior margin of tbe eye; tbe mandible a little behind the 

 end of the eye. At i)r('sent tbe bead contains a few scales in several scries behind the eye. 

 The diameter of the eye (9 millimeters) is equal to one-third tbe length of tbe snout, and 

 about two-fifths of the length of tbe postorbital part of tbe head. The mouth is rather 

 large. Teeth on the intermaxiilaries and mandible in somewhat broader bands than tliose 

 on the maxilla. Vomerine patches broad, well separated in front. Tip of tongue free. 

 Integumentary flap not extending mu(;h beyond tbe margin of the suboperde. Branchi- 

 ostegals, 10; gill rakers, 2 above, 12 below, the longest scarcely half as long as tbe eye 

 The distance of the dorsal from tbe; tip of snont (122 millimeters) is twice the greatest 



