Elapine Snake j/om New Guinea. 249 



fourth to one third its distance from tlie frontal ; internasals 

 about half the length of the praBfrontals ; frontal once and 

 one fifth to once and one third as long as broad, as long as 

 or a little shorter than its distance from the end of the snout, 

 much shorter than the parietals ; nostril between two nasals, 

 narrowly separated from the intcrnasal and the first labial ; 

 prgeocular once and a half to twice as long as deep, in contact 

 with or narrowly separated from the posterior nasal ; one 

 postocular (exceptionally two); temporals 1 + 1 or 2; six 

 upper labials (exceptionally seven), third and fourth (or 

 third, fourth, and fifth) entering the eye, last largest ; three 

 or four lower labials in contact with the anterior chin-shields, 

 which are as large as the posterior. Scales in 15 rows. 

 Ventrals 213-218; anal divided; subcaudals 22-32. Dark 

 olive-brown above, lateral scales yellowish in the centre ; 

 upper lip and lower parts yellowish, witiiout spots; indica- 

 tions of a vellowish nuchal collar may be present. 



Total length 500 mm. ; tail 40. 



Four specimens from Dutch New Guinea, north of Fak 

 Fak, altitude 1700 feet, obtained by Mr. A. E. Pratt, to 

 whom we owe the discovery of another species of the same 

 genus {A. pi-at(i, Blgr.) a lew years ago. 



The present species is named after Prof. E. Lonnberg, who 

 described in these ' Annals ' another member of the same 

 group under the name of P seudapisthocalamus nymani. It 

 is still doubtful whether Ajnsthocalamus and Pseudapistho- 

 calamus can be regarded as valid genera, so closely are they 

 related to the previously described Toxicocalamus. The 

 species, six in number, all from New Guinea, are, at any 

 rate, easily distinguished by means of the following cha- 

 racters : — 



A. Prseocular present ; scales in 15 rows ; anal divided. 



a. Nostril between two nasals. 

 Twopostoculars; ventralsl96; subcaudals 



50 or more Apisthocalamus lorice, Blgr, 



One postocular ; ventrals 190 ; subcaudals 



41 Apist/iocalatUKS pratti, Bljjr. 



One postocular (exceptionally two) ; ven- [l^^BT' 



trals 213-218 ; subcaudals 22-32 . . Apisthociihtmus loennbergii, 



b. Nasal single ; ventrals 196-205 ; [Liinub. 



subcaudals 2<)-29 J'sciiddpint/iucn/amiis nymani, 



B. No prteocular ; nostril between two nasals. 



Scales in 15 rows ; ventrals 261 ; anal L^lgr. 



entire ; subcaudals 25 To.ricocalamun stanlci/onus, 



Scales in 17 rows ; ventrals 299-305 ; L^^Kf- 



anal divided ; subcaudals 30-31 .... Toxicocolmnvs />»iffi^siiniis. 



