286 MR. C. TATE REGAN ON THE 
20. LorIcaRIA MACULATA. 
Loricaria maculata Bloch, Ausl. Fische, viii. p. 73, pl. 375. fig. 1 (1794) ; Kner, Denkschr. Ak. 
Wien, vi. 1853, p. 80; Giinth. Cat. Fish. v. p. 257 (1864) ; Vaill. Bull. Soc. Philom. (7) iv. 
1880, p. 157; Eigenm. & Eigenm. Proc. Cal. Ac. (2) ii. 1889, p. 38, and Occ. Pap. Cal. Ac. 
i. 1890, p. 377. 
Loricaria cirrhosa var. maculata Bl. Schn, Syst. p. 125 (1801). 
Plecostomus maculatus Swains. Fishes, ii. p. 304 (1839). 
Loricaria amazonica Casteln. Anim. Am. Sud, p. 46, pl. xxiii. fig. 2 (1855). 
Loricariichthys maculatus Bleek. Nat. Verh. Holl. Maats. xx. 1864, Silures de Suriname, 
p- 16. 
Length of head 4-4% times in the total length. Breadth of head 14-1} times in its 
length, diameter of eye 53-73 times, interorbital width 4—45 times, length of snout 
twice. Snout pointed or rounded ; upper surface of head, in the adult, without keels, 
evenly convex; supraoccipital, in the young, with a pair of weak keels; orbit with a 
deep and broad notch; upper lip scarcely distinct, lower lip of moderate breadth, 
smooth or with very small papille, usually with somewhat larger papille near its 
posterior margin, which has short fringes and is emarginate ; free portion of barbel a 
little longer than the diameter of eye; upper jaw with about 6 minute teeth on each 
side, lower with about 10. 52 scutes in a longitudinal series, 18-20-+12-14, the 
lateral keels sharp, separate throughout; all the scutes in front of the dorsal weakly 
carinate in the young, without distinct keels in the adult; lower surface of head 
naked; abdomen with 2 series of plates between the lateral series, sometimes with 
a third median series of small plates anteriorly ; anterior plates smaller, extending 
nearly to the inner angle of the gill-opening in the adult; an anal plate, bordered 
anteriorly by 2 or 3. First dorsal ray a little longer than the head; pectoral spine 
extending to base of ventral; ventral spine not produced, the first or first and second 
branched rays the longest; caudal emarginate, the upper lobe the longer; upper 
caudal ray elongate. Breadth of body at level of first anal ray 43-43 times in the 
distance from the latter to the caudal. Head and body with dark spots or blotches ; 
fins, except the anal, with dark spots on the rays; lower lobe of caudal blackish 
at the tip. 
Total length 190 mm. 
Hight specimens (including the type of LZ. amazonica): R. Amazon; Guiana. 
21. LORICARIA TYPUS. 
Loricaria maculata (non Bloch) Cuy. & Val. Hist. Nat. Poiss. xv. p. 473 (1840). 
Parahemiodon typus Bleek. Nat. Verh. Holl. Maats. xx. 1864, Silures de Suriname, p. 20, pl. vi. 
fig. 1, and pl. xiii. fig. 1. 
Loricaria parahemiodon Giinth. Cat. Fish. v. p. 258 (1864). 
Loricaria valenciennesi Vaill. Bull. Soc. Philom. (7) iv. 1880, p. 157. 
