286 MR. C. TATE BEGAN ON THE 



20. LORICARIA MACULATA. 

 Loricaria maculata Blocli, Ausl. Fische, viii. p. 73, pi. 375. fig. 1 (1794) ; Kner, Denksckr. Ak. 

 Wien, vi. 1853, p. 80 ; Giinth. Cat. Fish. v. p. 257 (1864) ; Vaill. Bull. Soe. 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, pi. 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 1-j-l j times in its 

 length, diameter of eye 5-|— 7-f times, interorbital width 4-4^ 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 papillae, usually with somewhat larger papillae 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. 32 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 4-§— 4f 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. 



Eight specimens (including the type of L. amazonica) : R. Amazon ; Guiana. 



21. Loricaria typus. 



Loricaria maculata (non Bloch) Cuv. & Val. Hist. Nat. Poiss. xv. p. 473 (1810). 



Parahemiodon typus Bleek. Nat. Verh. Holl. Maats. xx. 1864, Silures de Suriname, p. 20, pi. vi. 



fig. 1, and pi. xiii. fig. 1. 

 Loricaria parahemiodon Giinth. Cat. Fish. v. p. 258 (1864). 

 Loricaria valenciennesi Vaill. Bull. Soc. Philom. (7) iv. 1880, p. 157. 



