THE AMERICAN TETRAGONOPTERINAE. 205 
25. HYPHESSOBRYCON ANISITSI (Higenmann). 
Plate 28, fig. 1; Plate 79, fig. 4. 
Hemigrammus anisitsi EIGENMANN, Proe. U. 8S. N. M., 1907, 33, p. 16 (Villa Rica). 
Hemigrammus hitkent EraenMann & Kennepy, (in part, non Boulenger) Proc. Acad. nat sci. Phil., 
1903, p. 519 (Estancia la Armonia). 
Hyphessobrycon anisitsi EtIGENMANN, Rept. Princeton univ. exped. Patagonia, 1910, 3, p. 437; Extis, 
Ann. Carnegie mus., 1911, 8, p. 158. 
Hasirat.— Paraguay; Upper Parana Basin; Uruguay Basin. 
Specumens examined. 
Number of Size 
Catalogue number specimens in mm. Locality Collector 
10182a I. Type eel 37 Villa Rica, Paraguay Anisits 
10182a I. Paratypes 3 Villa Rica Anisits 
9995 I. Paratypes 8 10-25 ! Estancia la Armonia, Paraguay Anisits 
3016 C. 36 30-45 Miguel Calmon, Tieté Basin Haseman 
3017 C. 21 21-44 Jundaihy, Sad Paulo Haseman 
3072 C. 2 53-55 Arequa, Paraguay Haseman 
2947 C. 3 26-35 Cacequy, Uruguay Basin Haseman 
3015 C. a 41-57 Sapucay, Paraguay Haseman 
Head 3.5; depth 2.75-3; D. 11; A. 22 to 26; scales 6-33 to 36-5 or 6; 
lateral line with pores on 8 to 25 scales; eye about 2.75 in the head, interorbital 
about 3. 
Compressed; depth of head at the base of the occipital process 1.25 in the 
greatest depth. Preventral region rounded, without complete series of median 
scales. Predorsal region rounded with complete median series of 11 to 13 scales. 
Occipital process 4 in the distance from its base to the dorsal, bordered 
by 3.5 to 4 scales. Interorbital slightly convex. Frontal fontanel triangu- 
larly oval, three fourths the length of the parietal without the occipital groove. 
Second suborbital small, its free margin surrounded with a naked margin of 
half its width or less. Mouth moderately large. Maxillary not as long as the 
eye, 3 in the head. Mandible a little longer than the eye. Premaxillary 
with an inner row of five teeth graduated from the second of the series which 
is 5- or 6-pointed, the fifth is 3-pointed and much smaller than the fourth; 
the outer row containing 2- to 4-pointed teeth. Maxillary with one 3-, rarely 
5-pointed, tooth. Dentary with a graduated series of four 4- to 6-pointed teeth, 
and five or six minute conical or narrowly tricuspid ones on the side. 
Gill-rakers 8 or 9 + 7. 
