ANNOTATED LIST OF THE SPECIES 211 
Genus 89: HARTTIA Steindachner 
Sturisoma (in part) Swainson, 1838, Fish. Amph. Rept., I, 337. 
Harttia Steindachner, 1876, Sitzb. Kix. Akad. Wiss. Wien, LX_XIV, 668; 
Higenmann and Eigenmann, 1890, Occ. Papers Cal. Acad. Sci., I, 385; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 415. 
Oxyloricaria (in part) Regan, 1904, Trans. Zool. Soe. London, X VII, 297. 
Type: Harttia loricariformis Steindachner 
Peruvian Amazon to Guiana and southeastern Brazil 
That group of Loricariinae with broad, depressed body and great length of 
tail, whose lateral plates are without keels; belly naked; adipose wanting; teeth 
numerous and well developed; a series of broad, paired plates behind the dorsal. 
230. HARTTIA FILAMENTISSIMA Eigenmann and Allen, sp. nov. 
Plate VIII, figs. 1 and 2 
15378, 1, 170 mm. to end of middle caudal rays, type, Rio Huallaga, Allen, November, 1920. 
15379, 1, 120 mm., Lago Cashiboya, Allen, August, 1920. 
Head 5.7; depth 8, equal to snout and eye; D. I, 7; A. I, 5; scutes 15 ++ 16, 
the lateral keels completely united from the 16th on; head as broad as long, its 
depth equal to half its length; eye 7 in head, interorbital 3; snout 1.75, rounded, a 
low ridge along its middle; supraorbital ridges not raised; none of the scutes carinate; 
lower surface of the head covered with small plates, except where covered with 
narrow, papillose lips; no free barbel; abdomen completely covered with 5-10 
series of small plates between the lateral scutes; a single median plate in front of the 
anus, a pair of plates covering the sides and area behind it; width at the 15th scute 
equals snout and half the eye. 
Fins all large, the dorsal, the pectorals, and caudal lobes with the first ray 
greatly prolonged; the dorsal filament 182 mm. long, longer than the fish exclusive 
of the caudal lobes; lower caudal lobe with its filament 192 mm., the upper filament 
broken; the pectoral filaments reaching the antepenultimate scute; ventrals reaching 
a little beyond the base of the anal; uniform sand color. 
This species 1s evidently closely related to H. platystoma. The eye is smaller, 
the depth at the dorsal greater, the profile consequently much steeper; the fins 
much as in platystoma except for the great prolongation of the outer rays of the 
dorsal, pectoral, and caudal fins. 
The second specimen differs somewhat in proportions (15379); there is a dusky 
stripe along the middle of the back, behind the dorsal, and a dusky stripe along 
the sides; similarly colored stripes on the dorsal, and within the outer rays of the 
caudal; barbel slightly free; eye 6 in the head, interorbital 3.5. 
231. Harrrra mMicrops Eigenmann and Allen, sp. nov. 
Plate VIII, figs. 3 and 4; plate IX, fig. 1 
15380, 5, type and paratypes, 150-174 mm. to end of middle caudal rays, Iquitos, Allen, September, 
1920. 
