204 GOBIES OF THE PHILIPPINES 



four large, dark brown spots along the upper middle of the side of the pos- 

 terior half of the trunk; three to four sharply denned indigo blue cross- 

 lines on the lower half of the body between the base of the pectoral and the 

 anus; the posterior one of these lines lies very close before the first of 

 the four large spots on the side of the trunk (in the larger example a large, 

 deep brown spot with indistinct margin lies between the upper margin 

 of the opercle and the center of the nape on the one side but is lacking on 

 the other side, while the smaller example lacks it on both sides) ; the ventral 

 is violet-gray, with a olear margin. [Steindachner.] 



This species is known only from the two specimens described 

 by Steindachner, found by him in the Vienna Museum and col- 

 lected at Vigan, Ilocos Sur. 



Genus 41. APARRIUS Jordan and Richardson 



Aparrius JORDAN and RICHARDSON, Bull. Bur. Fisheries 27 (1908) 278. 



The teeth are minute, in two or three rows in each jaw, with 

 or without small posterior canines in the lower jaw 1 ; the notched 

 tongue short, adnate nearly to tip ; the tail very long and pointed ; 

 dorsal VI, 1-10 or 11, at least some of, the spines with elongated, 

 threadlike tips; the second dorsal short; anal I, 9 to 11; the 

 cheeks and opercles naked; the pectorals without silklike rays 

 above; scales in longitudinal series 26 to 42. 



According to the authors, the teeth are "very fine, in bands 

 in both jaws." This genus is very close to Rhinogobius, differ- 

 ing in dentition, shape and length of caudal, and shape of tongue. 



Key to the species of Aparrius. 



a 1 . Scales 26 to 29; no black longitudinal bands on side A. acutipinnis. 



a 2 . Scales 38 to 42; two black longitudinal bands on side A- moloanus. 



96. APARRIUS ACUTIPINNIS (Cuvier and Valenciennes) 



PLATE 16, FIG. 2 



Gobius acutipennis CUVIER and VALENCIENNES, Hist. Nat. Poiss. 12 



(1837) 60. 

 Gobius acutipinnis GUNTHER, Cat. Fishes Rrit. Mus. 3 (1861) 44; 



DAY, Fishes of India (1878) 291, pi. 61, fig. 2. 

 Acentrogobius acutipinnis SMITH and SEALS, Proc. Biol. Wash. 19 



(1906) 81. 

 Aparrius acutipinnis JORDAN and RICHARDSON, Bull. Bur. Fisheries 



27 (1908) 278. 

 (?) Rhinogobius ocyurus JORDAN and RICHARDSON, Bull. Bur. Fisheries 



27 (1908) 42, fig. 14. 



Dorsal VI, 1-10 or 11; anal I, 10 or 11; there are usually 27 

 (26 to 29) scales in a lateral series and 7 or 8 in a transverse 

 series. 



