Family ELAPIDAE. 



Subfamily ELAPINAE. 



Genus HEMIBUNGARUS Peters. 



1. Hemibungarus japonicus (Guenther). 



Plate I, fig. 2. 



1868. Callophis japonicus Guenther, Ann. Mag. Nat. Hist. (4), I, p. 428, pi. 

 XVII, fig. c (Nagasaki?). 



n. 



Three specimens from Nase, Amami-Oshima. 



2. Hemibungarus matsudai sp. nov. 



Plate II. 



Rostral scarcely visible from above ; internasals nearly entering nostrils ; 

 nostril in posterior edge of a large nasal, followed by a somewhat smaller 

 postnasal prefrontals large, broadly in contact with supraoculars ; frontal 

 shorter than its distance from tip of snout, slightly shorter than parietals ; 

 one large preocular in contact with postnasal, prefrontal, supraocular, and 

 third supralabial ; two postculars ; temporals 1 -f 1 ; 7 supralabials, third and 

 fourth entering eye, first and second small, third nearly as large as fifth, 

 sixth and seventh largest, subequal in size ; 6 lower labials, four in contact 

 with anterior chin-shields, fourth very large ; posterior chin-shields nearly as 

 long as the anterior ; 13 rows of smooth scale ; 263 ventrals ; anal divided ; 

 28 pairs of subcaudals. 



Color (in alcohol) pale brownish gray above, with three longitudinal 

 black stripes from nape to the tip of tail, of which the median stripe the 

 narrowest, covering the median scale row and half of the adjoining row on 

 each side, other two much broader, covering two outer scale rows and hah 

 of the adjoining row above, as well as the external . corner of gastrosteges ; 

 top of head brownish black, with a yellowish white band, which covers 

 adjoining halves of sixth and seventh supralabials, temporals, anterior lialf of 



