626 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



DisTEiBUTiON. — From the Persian Gulf, India, Thailand, Malaya, 

 Java, and Madura Straits. One specimen listed from Japan may be 

 an error as no specimens have been identifiably reported from China 

 or the Philippines. 



Relationships. — I consider Ehizoprionodon oligolinx and R. 

 taylori cognate species. Ehizoprionodon oligolinx differs from R. 

 taylori in having fewer enlarged hyomandibular pores and more 

 precaudal vertebrae. It is also close to R. lalandei, from which it is 

 distinguished in having shorter labial furrows, fewer enlarged hyoman- 

 dibular pores, and typically fewer teeth. 



NoMENCLATURAL DISCUSSION. — This species frequently has been 

 called Scoliodon palasorra, especially in the Indian literature. I have 

 found that name to be referable to Scoliodon laticaudus. 



The name "oligolinx" comes from the Greek, meaning "short 

 furrow," and refers to the short upper labial furrow found in this 

 species. 



Material.— Holot^'pe: USNM 196799, 489 mm. male. Gulf of 

 Thailand, ca. 11°56'-12°03' N. and ca. 102°14'30"-102°17'45" E., 

 about 2-3 miles offshore, at a depth of 0-10 meters, January 12, 1961, 

 obtained from the Bangkok fish market [information furnished by 

 fisherman; original register nmnber GVF 2467]. 



Paratypes: Persian gulf: near Hormuz, UZMK CN5 (1 : 276 mm.). 

 INDIA: Sind, BMNH 1889.2.1.4150 (1: 594); Bombay, BMNH 

 1889.2.1.4164-6 (3: 272-608), ANSP 88351 (1: 261, embryo); Alibag, 

 ZSZM H1377 (1: ca. 244), ISH 5/61 (1: 301); Kanara, BMNH 

 1889.2.1.4175 (1: 610); Coast of Malabar, MNHN A7783 (4: 242- 

 265); Quilon, USNM 175349 (1: 272); Pondicherry, MNHN 946, in 

 part (1: 280); Madras, BMNH 1889.2.1.4161-3 (1: 294); Vizagapa- 

 tam, BMNH 1868.10.25.21 (1: ca. 260), SU 41981 (1: 276); Calcutta, 

 SU 41986, in part (1: 292). ceylon: CNHM 58887 (1: 287); 50 

 miles off coast, NMV [no number], in part (1: ca. 305). gulf of 

 THAILAND: taken with holotype, GVF 2467 (2: 463-502) ; ca. 13°09-13' 

 N. and ca. 100°52-55' E. GVF 1557 (2: 452-461); ca. 13°20-27' N. 

 and ca. 100°45'15"-57' E., GVF 1548 (1: 462); from Choi Buri 

 south to Rayong, GVF 1541 (4: 387-481); Bangkok, ANSP 87215 

 (1: 220), ANSP 60403 (1: 315), NMV [no number] (1: 391), ISZZ 

 7533 (1: 413). malaya: Singapore, MCZ 180 (1: 395), CNHM 

 15653 (1: 390), NMV [no number] (1: 226), NMV [no number] (1 

 ca. 227), SU 14197 (1: 417); Penang, MCZ 111 (1: 458). Sumatra 

 Medan, ANSP 77276 (2: 235-260); Padang, ZSZM 10377 (1: 253) 

 JAVA: RNH 4713 (1: 414), MNHN A7772 (1: 407), IRSN 506 (1 

 438); Batavia, CNHM 15654 (1: 231, embryo), MCZ 1387 (1: 219) 

 vicinity of Batavia, UMMZ 177113 (3: 250-435). madura straits 

 UZMK 382 (1: 435), UZMK 385 (1: 385). japan: BMNH [no 

 number] (1: 380). 



