98 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



faintly suggested in Fowler's drawing, is not referred to in his der 

 scription. 



Described from two specimens, 8 and Y.4 cm. long, taken in 1933 in 

 Nakon Sritamarat, Peninsular Siam, an outstanding feature of this 

 species is a preorbital spine that projects backward from the lach- 

 rymal bone. In general appearance it greatly resembles Z>. mala- 

 haHca of India and Ceylon but seems to have a somewhat different 

 pattern of longitudinal stripes. Fowler made the species the type of a 

 new subgenus, Rainhoihamia, distinguished by the presence of a pre- 

 orbital spine. 



It seems probable that all specimens from Thailand formerly iden- 

 tified as D, malabarica in reality represent D. regina. These speci- 

 mens have come from a waterfall stream on Koh Samui in the Gulf 

 of Siam as noted by Masya and Indrambarya (1932) ; from a brook 

 in Ronpibun ; from Klong Sok, one of the upper branches of the Tapi 

 River southwest of Bandon; and from a waterfall stream on Kao 

 Chong near Trang. An examination of specimens from these local- 

 ities in the Thailand Bureau of Fisheries has disclosed in all of them 

 a preorbital spine, which is supposed to be a distinguishing character 

 in regina but lacking in malaharica^ although Vinciguerra (1889-90, 

 p. 303) reported the presence of this spine in Burmese fish that he 

 identified as malaharica but that may have been referable to regina. 

 From the information now available it is not possible to give D. 

 malabarica a Thailand habitat. 



On Koh Samui this fish is called pla siew bai pai (bamboo-leaf slew 

 fish) and in the Trang-Patalung district pla chuh hi. Ordinarily the 

 fishermen do not distinguish between Danio and Rasbora in applying 

 names. 



DANIO (DANIO) AEQUIPINNATUS (McClelland) 



Perilampus aeguipinnatus McClelxand, 1839, p. 393, pi. 60, fig. 1 (Assam). 

 Danio aequipinnatus Hoea, 1923, p. 153 (Nakon Sritamarat). 



This species, well distributed in India and known also from Burma 

 and Ceylon, has been found in Thailand in a mountain stream in 

 Nakon Sritamarat, whence Hora had two specimens. The writer's 

 collecting in the same general region failed to disclose this species. 



It was first pointed out by Vinciguerra (1889-90, p. 304) and later 

 confirmed by Myers (in Herre and Myers, 1937, p. 57) that in this 

 species there is a preorbital spinous process as in D. (D.) regina. 



DANIO (DANIO) PENINSULAE, new species 



Figure 7 

 Description. — Depth 3.5 in standard length; least depth of caudal 

 peduncle 1.5 in its length and more than 2 in head ; head almost equal 

 to depth, its upper profile straight; eye 3 in head, exceeding snout 

 and 2 times interorbital space; posterior end of maxillary reaching 

 vertical from anterior margin of eye ; symphyseal hook of lower jaw 



