210 FISHES OF WESTERN SOUTH AMERICA 
Of this group, the smallest, 15393, is more like 15391 from Iquitos, and the 
Paranapura specimen from the Yurimaguas region, with its long, falcate ventrals, 
is more like 15390 from the nearby Huallaga. 
Three teeth in the upper jaw, 5 in the lower; in both the occipital bicarinate. 
In 15393 the dorsal has a broad, oblique bar, the caudal black, its outer rays 
light; in 15400 the dorsal punctate, the caudal dusky. 
Ranging from the Huallaga to Surinam, we have a species of considerable 
variability, if not indeed a distinct species in this portion of its range, or species 
in the making. 
228. LORICARIA CLAVIPINNA Fowler 
Loricaria (Fusiloricaria) clavipinna Fowler, 1939 (1940), Proe. Acad. Nat. Sei. Phila., XCI, 247, 
figs. 45-47. 
Contamana, Peru 
The type known, a specimen 161 mm. to the tip of the lower caudal lobe, in 
the collections of the Philadelphia Academy. Noteworthy for the hypertrophied 
pectoral spine, expanded into a club distally. 
Genus 88: HEMIODONTICHTHYS Bleeker 
Hemiodon (non Swainson) Ikner, 1854, Denksch. KIx. Akad. Wiss. Wien, VI, 89. 
Hemiodontichthys Bleeker, 1863, Nederl. Tijdsch. Dierk., I, 81; 
Figenmann and EHigenmann, 1890, Oce. Papers Cal. Acad. Sci., I, 358; 
Regan, 1904, Trans. Zool. Soc. London, XVIT, 296; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 415; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 250. 
Type: Hemiodon acipenserinus Kner 
Peruvian Amazonia to Matto Grosso and British Guiana 
A genus distinguished by the long rostrum, expanded at the extremity, and 
bearing recurved hooks at the tip; the hooks of the lateral keels more pronounced 
than in other genera; teeth wanting in the upper jaw, never numerous, nor setiform ; 
orbital notch more or less distinct. 
229. HEMIODONTICHTHYS ACIPENSERINUS (Inner) 
Hemiodon acipenserinus Kner, 1853, Denksch. KK. Akad. Wiss. Wien, VI, 92, pl. vii, fig. 2, Rio 
Guaporé; Matto Grosso. 
Loricaria acipenserinus Giinther, 1864, Cat. Fish. Brit. Mus., V, 260. 
Hemiodontichthys acipenserinus Bleeker, 1863, Nederl. Tijdsch. Dierk., I, 81; 
Eigenmann and Kigenmann, 1889, Proc. Cal. Acad. Sei., (2), I, 34; 
Eigenmann and Eigenmann, 1890, Occ. Papers Cal. Acad. Sci., I, 359; 
Regan, 1904, Trans. Zool. Soc. London, XVII, 296; 
Eigenmann, 1907, Ann. Carnegie Mus., IV, 120, pl. xxxv, fig. 1; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, IIT, 415; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 250. 
Iquitos to British Guiana, Matto Grosso 
15972, 8, 119-140 mm. to end of middle caudal rays, Iquitos, Morris, 1922. 
