9. SILLAQO. 243 



The two following species appear to form another genus : — 



2. Aphritis imdulatus. 



Jenym, Zool. Beagle, Fishes, p. 160. pi. 29. f. 1 ; Gay, Hkt. CliU. Zool. 

 ii. p. 168. 



B. 6. D. 7-8 I 24-25. A. 23. 



Palatine teeth none ; the upper jaw longest. The height of the 

 body is about six times in the total length, the length of the head 4|. 

 Olivaceous, u-regularly spotted with brownish. {Jen.) 



Chonos Archipelago (west coast of South America). 



3. Aphritis porosus. 

 Jenyns, I. e. p. 162. 



D. 8 I 25. A. 23. 



Palatine teeth none ; the upper jaw longest. The height of the 

 body is about one-sLxth of the total length, the length of the head 

 one-fourth. Olivaceous-brown, with six or seven indistinct dusky 

 cross-bars. {Jen.) 



Coast of Patagonia. 



9. SILLAGO*. 



Sillago, Cui\ Regne Anim. ; Cm. ^- Val. iii. p. 398. 



Body somewhat cylindrical, elongate ; cleft of the mouth small, 

 with the upper jaw rather longer; eye lateral, somewhat directed 

 upwards. Scales rather small, ctenoid. Two dorsals, the first with 

 nine to twelve sprues ; ventrals thoracic ; the lower pectoral rays 

 branched. Villiform teeth in the jaws and on the vomer, none on 

 the palatines. Operculum terminating in a point, prajoperculum 

 denticulated. The bones of the head with the muciferous system 

 developed t. Six branchiostegals ; pseudobranchiae. Air-bladder 

 simple ; pyloric appendages in small number. 



From the Red Sea to the southern coasts of Australia. 



1. Sniago sihama. 



Atherina sihama, Forsk. p. 70. 



Sciaena malabarica, Bl. Sc/ui. p. 81. t. 19. 



Platvcephalus sihamus, Bl. Schn. p. 60. 



Russell, t. 113. 



Sillago sihama, Riipp. Atl. Fische, p. 9. taf. 3. f. 1. 



acuta, Cuv. 8f Val. iii. p. 400 ; Bleeker, Perc. p. 61. 



* 1. Sillago burrus, Bichards. Ann. S( Mag. Nat. Hist. 1842, ix. p. 128, and 



Ico7i. Pise. pi. 2. f. 1. — Australia. 

 t The physiognomy of the fishes of this genus lias a striking similarity to 

 Packi/urus, a Scia;noid genus. 



r2 



