NO. 3582 GENUS ENTOMACRODUS — SPRINGER 49 



Distribution (fig. 5). — EntoJnacrodus vermiculatus is known only 

 from the Indian Ocean, and is the only species of Entomacrodus 

 endemic to that ocean. 



Material. — Mozambique, Ibo: USNM 197685, RU unoataloged; .Seychelles: 

 BMNH 1860.3.1.18, MNHN A 1809 (lectotype of Salarias vermiculalus); Beacon 

 Island: ANSP 102195; Curieuse Island: ANSP 102198; Mahe: USNM 197636; 

 La Digue: RU uncataloged; Madagascar, Fort Dauphin: MNHN 1914-15; 

 NossiBe: USNM 199246; Ceylon: BMNH 1866.1.24.10-17, 1903.5.12.2-4; Java 

 (Karangbollong) and/or Sumatra (Trussan) : RNHM 4777 (includes syntypcs of 

 Salarias vermiculatoides); Java, locality unknown: RMNH 1812; Pelabuhan 

 Ratu, 6°59' S, 106°33' E: USNM 72735; locality unknown (collected by Indian 

 Zoological Survey): USNM 178989; Malacca Straits, Pulo Jarak (03°59'N, 

 100°16'E): USNM 199425; Detroit de la Sonde (Sunda Strait): MNHN A2029. 



Entomacrodus stellifer (Jordan and Snyder) 



(For synonymy, see subspecies) 



Description. — Segmented dorsal fin rays 15-17 (table 16); seg- 

 mented anal fin rays 16-19 (table 16); posteriormost anal pterygio- 

 phore supporting 1 or 2 external elements (supporting 2 elements in 

 25.2 percent of specimens of E. s. lighti and 20.2 percent of E. s. 

 stellifer); total gill-rakers on first arch 14-20 (rarely 14 or 20); pseudo- 

 branchial filaments 6-10, increasing in number with increase in SL 

 (table 17); vertebrae 34-36 (table 16); supraorbital cirri 1-3 (1 in 

 over 90 percent of specimens), number not increasing with increase in 

 SL; predorsal commissural pores 3-9, not obviously increasing in 

 number with increase in SL (table 18); nape with 1 cirrus on each 

 side (a flap occasionally with frayed edges); all preopercular pore 

 positions with simple pores (rarely with 1 pair of pores at one position) ; 

 1 pore before each anterior nostril; lateral line pores terminating on 

 side in area below and between dorsal fin ray 10 and posterior end of 

 caudal peduncle; ventral margin of upper lip with middle one-third 

 to three-fifths unevenly crenulate, lateral thirds or fifths entire. 



Proportional measurements: See tables 3, 4, and 19. 



Males do not develop noticeable modifications of the skin of the 

 anal spines and rays and it is therefore not possible to differentiate 

 mature from immature males externally. Males (and rarely females), 

 presumably mature or maturing, tend to develop a low fleshy pre- 

 dorsal crest. Males as smaU as 43 mm SL may show indications of 

 such a crest, while males as large as 60 mm may not. 



The largest specimen of E. s. stellifer examined was a male, 82.8 mm 

 SL, and the largest female, 67.8 mm. Too few specimens were 

 available to determine if there was a significant difference in relative 

 numbers of either sex at any particular size. The smallest specimen 

 examined, 28.7 mm SL, was a juvenile male. 



The largest specimen of E. s. lighti examined was a male, 96.6 mm 

 SL, and the largest female was 92.0 mm. Males and females occurred 



