8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 9I 



8a. Snout very blunt ; body deep and heavy ; teeth minute, about 

 40 in each jaw in the adult; dorsal spines 6. . . .Johnsonina. 



8b. Snout tubular but short, forming a deep angle with forehead 

 before eye ; body rather slender ; teeth larger, unequal in 

 number, 20 in upper and 28 in lower jaw; dorsal spines 4, 

 with two deeply imbedded free spines between the two 

 dorsal fins Bathyphylax. 



Triacaiitlins (Cuvier) Oken, 1817. Several species studied. The 

 genus was revised by Regan.' 



Halimochirurgus Alcock, 1899. I have examined two of the four 

 species {H. macraulos Fowler and H. triaconthus Fowler). 



Macrorhamphosodes Fowler, 1934. Types of M. platychcilus 

 Fowler' examined. 



Tydemania Weber, 1913. I have studied eight examples of T. iiavi- 

 gatoris Weber, the only known species. The fourth dorsal spine, al- 

 most completely hidden in the flesh, was evidently overlooked by 

 Weber. 



Triacanthodcs Bleeker, 1858. Examples of both T. aiiouialns 

 (Schlegel) and T. actJiiops Alcock have been examined. There may 

 be either 5 or 6 spines present in acthiops. 



Hollardia Poey, 1861. The type and only known specimen of H. hol- 

 lardi Poey is a dried skin, now 139 mm standard length, U.S.N.M. 

 no. 15454. The origin of the spinous dorsal is above the middle of 

 the standard length and the distance from the base of the first dorsal 

 spine to the snout tip is equal to half the total length of the specimen. 

 Dorsal spines 6, soft dorsal rays 17, anal 15, caudal 12, pectoral 13 be- 

 sides one rudimentary ray at upper margin. A single small spine or ray 

 in the axil of each large pelvic spine. Teeth large, strong, conical, 14 

 in upper and 16 in lower jaw. The other proportions are well shown 

 in the photograph (pi. i, fig. 2). 



In 1925 Breder " recorded two specimens from the Caribbean as 

 H. hollardi, one of them being figured. No locality or measurements 

 are given. It seems likely, however, that the 484-fathom haul of April 

 20, from which came specimen 540, is the same one in which the type 

 of Pseud oxenomystax dubius was caught, on the same date and at 

 the same depth. If this is true, the Hollardia was taken north of 

 Glover Reef, British Honduras. The figured example dififers from 

 H. hollardi, if we may believe the apparently excellent figure, in the 

 following points: Soft dorsal 12, anal 16. Orbit small, about 4.17 in 

 body depth (versus 3.58 in hollardi). Caudal peduncle much more 



*'Pr6c. Zool. Soc. London, 1903, pp. 180-185. 



° Proc. Acad. Nat. Sci. Philadelphia, vol. 85. p. 365, 1934. 



'Bull. Bingham Oceanogr. Coll., vol. i, no i, p. 7S, fig. 33, 1925. 



