266 bulletin: museum of compaeatiye zoology. 



tlie eggs are laid. It is the type from which Figures 3 and 4 of Plate XIX in 

 the Proceedings of the U. S. Xational Museum for 1894, and Figures 39 and 40 

 of the Oceanic Ichthyology were drawn. Apparently it has lost the tip of the 

 snout and the caudal filament. The lower fin of the tail is rather indistinct 

 anteriorly, but evidently it originates some distance farther forward than the 

 upper. Probably the specimen was torn from the egg and mutilated in the 

 dredge. The claspers and the tenacula are undeveloped. The parietal spines 

 and those between the dorsals and between the second dorsal and the fin on 

 the tail are quite prominent. They rise above the level of the head and of 

 the dorsal fins and the dorsal spine, as these last are closely applied to the 

 back ; their function appears to be aid in escape from the eggshell and to pro- 

 tect the back and fins at the time and later. The teeth of this individual are 

 figured on Plate 5, Figures 8 and 9, in four times natural length. They exhibit 

 slight differences in outline from those of older specimens, the principal one of 

 which is a backward extension from the median ridges of palatines and man- 

 dibulars; a marked distinction also occurs in the apparent lack of tritors. On 

 e.ich of both palatines and mandibulars there is a symphyseal, a median, and an 

 outer ridge extendino; to the hind edire of the tooth. Close examination dis- 

 closes, even in this comparatively undeveloped stage, indications of the molar- 

 like tritors in these ridges, in positions similar to those shown in Figures 6 

 and 7 of Plate 5. In each case the inner ridge is formed by the incurved edge 

 of the tooth. The vomerine teeth are less hooked than those on the older 

 specimens, and the tritors are hardly visible. 



Callorhynchus milii. 



Plate 6, Figures 7, 8; Plate 13, Figures 4, 5. 



Calhrhi/ncluis milii Bory, 1823, Diet, class. d'Hist. Nat., TIL, 62, pi. y. 

 Cullorhi/iichus tasmaniiis Rich., 1841, Trans. Zooi. Soc. Lend., III. 174. 



A specimen belonging to this species, sent by IMr. W. Robertson from 

 Hobart Town, has a total length of 1C.5, a length of head of 4, a length from 

 snout to dorsal spine or to base of pectoral of 4.25, from snout to ventral of 

 7.4 and to second dorsal of 7.75, a depth of body of 2.5, a length of dorsal 

 spine of 2.75, a length of pectoral of 4, a length of base of second dorsal of 3, 

 a distance from origin of supracaudal to end of base of anal of 0.6, and a 

 length of caudal of 4.75 inches. 



The form is compressed, and is massive about the hend ; seen from the side 

 the outline is very convex and prominent above the front edge of the eye and 

 forward for a short distance. The foliate extremity of the proboscis is broad- 

 est near the hind margin, where it is subtruncate and slightlv notched. The 

 dorsal spine is situated above the origin of the, pectoral ; it is compressed and 

 sharp in front. In a trans-section it is concave immediately behind the sharp 

 front edge, then becomes convex ; the posterior edges have sharp retrorse ser- 



