380 ACANTHOPTERTGII. 



over the opercles, just toucLing the posterior edge of the orbit : the second from the last three spines and first 

 few dorsal rays is continued downward to tlie middle of the body, and backward to the summit of all the dorsal 

 rays : caudal black, with a white upper and lower edge. 



It is suggested that A. intermedius, Schlegel, is a variety of this species, differing in colour it being 

 brownish, with a curved milk-white band from the nape over the opercle and subopercle : a second from the 

 last few dorsal spines to in front of the base of the anal, it is rather produced superiorly and posteriorly : a third 

 over the free portion of the tail. Fins brownish, edged witli black, and tipped with white. In one of the two 

 specimens in the Calcutta Museum, the pectoral has a black extremity with a white edge. 



Mahitat. — Andamans to the Malay Archipelago and beyond. 



7. Amphiprion akallopisus. 



Sleeker, Sumatra, ii, p. 281, and Groot Oby. j). 438 ; Giinther, Catal. iv, p. 10. 



B. V, D. ^V-Vf- P- 19. V. 1/5, A. ^\-,, C. 15, L. 1. 60, L. tr. 6/24. 



Length of head 3^ to 4j, of caudal 4^ to 5i, height of body 2f to 3 in the total length. Eyes — diameter 

 3| in the length of head, 1 diameter from end of snout, and also apart. All the opercles and suborbital ring of 

 bones coarsely denticulated. Fins — dorsal spines of moderate strength, short, increasing in length to the fourth, 

 a notch between the spinous and soft portions. Caudal rounded. Colours — orange, brightest on the head, chest 

 and base of caudal fin : a blue band runs from between the orbit to the dorsal fin where it divides into two, half 

 going along either side of the base of the fin. Scales on body with a light spot. 



In a specimen 1'5 inches long from the Andamans the preopercle is entire. 



Habitat. — Andamans to the Malay Archipelago. 



Genus, 2 — Peemnas, Cuv. 

 Bmnchiostegals five or six : pseudobrmichice. All the opercles serrated : a long strong spine at the posterior 

 edge of the preorhital. Teeth in a single row, conical and small. Dorsal ivith 9 or 10, a7ial with 2 spines. Scales 

 I if moderate sise. The lateral-line ceases below the end of the dorsal fin. An air-vessel. Pyloric appjendages three. 



SYNOPSIS OP INDIVIDUAL SPECIES. 

 1. Premnas Uaculeatus, Bloch, D. /f-A) ^- tt^tt. L. 1. 50-60. 



1. Premnas biaculeatus, Plate LXXX, fig. 5. 



Chcetodon biaculeattis, Bl. t. 219, f. 2. 



Lutjanus trifasciatus, Bl. Schn. p. 568. 



Holacantlms biactdeatus, Lacep. iv, pp. 528, 537. 



Molocentrus Sonneratii, Lacep. iv, pp. 344, 391. 



Scorpicena aculeata, Lacep. iii, pp. 258, 268. 



Premnas trifasciatus, Cuv. and Val. v, p. 405. 



Premnas semicinctus, Cuv. and Val. v, p. 409, pi. 133, f. 1 ; Swainson, Fishes, ii, p. 217. 



Premnas unieolor, Cuv. and Val. v, p. 410. 



Premnas biaculeatus, Bleeker, Banda, iii, p. 105 ; Giinther, Catal. iv, p. 10. 



B. V, D. t6?tV-to. P- 19, V. 1/5, A. „?^, C. 15, L. 1. 60-70, L. tr. 14/35, Cffic. pyl. 3, Vert. 12/14. 



Length of head 4, caudal 4j, height of body 2f in the total length. Eyes — diameter a little above 

 3J to 4 in length of head, 1 to Ij diameters from end of snout, and 1 apart. Preorbital armed with two 

 strong spines, one of which commences o])posite the anterior third of the orbit, the largest below its posterior 

 third, the longest reaches the opercle. Preopercle rounded, its vertical border serrated, as is also the lower 

 edge of the subopercle. Fins — fom'th dorsal spine longest, and the second of the anal. Lateral-line — ceases in 

 a tuliular form opposite the third dorsal ray. Colours — black or chestnut-brown, fins edged vrith black. A 

 broad white band margined with black passes over the occiput and on to the opercles and subopercle : a 

 second from the three last dorsal spines to in front of the base of the anal : a third over the free portion of the 

 caudal. 



This fish is said to use Actinim as a hiding place (De Cresp. Proc. Zool. Soc. 1869, p. 248). 



The specimen figured (life-size) is fi'om the Malay Archipelago, and for it I am indebted to Professor 

 Schlegel and Dr. Hubrecht of Leyden. 



Habitat. — Seas of India to the Malay Archipelago and beyond. 



Genus, 3 — Teteabeachmum, Cantor. 

 Pascyllus,* Cuv. 



Branchio.stegals five : pseudobranchiiB. Preopercle, a^id occasionally the preorbital are serrated. Teeth villi- 

 form, in a narrow hand, the outer being somotvhat the larger. Dorsal with 12 or 13, anal ivith 2 spines. Scales large 

 (/r of moderate size. Lateral-line ceases in a tubular form below the soft dorsal, hut is continued along the central 

 row of scales as a circular hole in each. Air-vessel large. Pyloric appendages two or three. 



• Preoccupied by Latreille (1796), ColeoiAera. 



