. Bulletin - United States National Museum. Science. 554 BULLETIN 188, UNITED STATES NATIONAL MUSEUM of Siam, in July 1931, and four, to cm. long, from the estuary of the Chantabun River in April 1933. Remarks.—This is a strikingly beautiful fish known to inhabit the Chantabun River and Estuary, the shores of Koh Samui, and coral reefs at Koh Pa-ngan. It will no doubt be found to occur on other parts of the Thai coast. The species resembles C. leptocephalits in general shape and color- ation, especially in the dark cross bands on the body, but differs there- from in having ctenoid scal
. Bulletin - United States National Museum. Science. 554 BULLETIN 188, UNITED STATES NATIONAL MUSEUM of Siam, in July 1931, and four, to cm. long, from the estuary of the Chantabun River in April 1933. Remarks.—This is a strikingly beautiful fish known to inhabit the Chantabun River and Estuary, the shores of Koh Samui, and coral reefs at Koh Pa-ngan. It will no doubt be found to occur on other parts of the Thai coast. The species resembles C. leptocephalits in general shape and color- ation, especially in the dark cross bands on the body, but differs there- from in having ctenoid scales, larger scales (about 78 to 80 against 105 in longitudinal series), and entirely different coloration and pat- tern of markings of the head and fins. CRYPTOCENTRUS LEONIS H. M. Smith Cryptocentrus leonis Smith, 1931a, Py 46, fig. 21 (estuary of Chantabun River). The type, the only known specimen, cm. long, was taken in the Chantabun Estuary at Lem Sing (Lion Point), in July 1928. The pe- culiar physiognomy, with the eye in the anterior third of the head and portruding above the dorsal profile like a Periophthalmus, together with the uniform reddish brown color of the body and 8 oblique dark brown stripes on the cheeks and opercles, makes the recognition of this species easy. In C. wehrlei, which bears some resemblance to C. Jeonis, there are 5 oblique dark stripes on the side of the head and the body is marked by dark cross bands. CRYPTOCENTRUS LEPTOCEPHALUS Bleeker FiGUKE 107 Cryptocentrus leptocephalus Bleeker, 1876 (469), p. 146 (Singapore). Described by Bleeker in 1876 from a single specimen, cm. long, collected at Singapore, this species has rarely been mentioned in publi- cations since that time. It is a form with several striking features, including minute scales, which are cycloid throughout (a condition not found in other local species), and peculiar coloration, consisting of a. '/4'At-:- Figure 107.—Cryptocentrus leptocephalus Bleeker. Drawn by Luang M
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