414 Dr. A. Giinther on new Species of Snakes 
*Dromicus viperinus, Gthr. Pebas. Mr. Hauxwell. 
*_. laureatus, Gthr. City of Mexico. Hr. Doorman. 
*Herpetodryas occipitalis, Gthr. Pebas. Mr. Hauxwell. 
*Tropidonotus Swinhonis, Gthr. Formosa. Mr. Swinhoe. 
*Hydrops callostictus, Gthr. Upper Amazons. Mr. Bartlett. 
*Mimophis madagascariensis, Githr. Madagascar. Rey. W. Ellis. 
*Rhagerrhis unguiculata, Gthr. Zanzibar. Dr. Kirk. 
* triteeniata, Gthr. East Africa. Mr. Warwick. 
*Aheetulla Kirkii, Gthr. Zanzibar. Dr. Kirk. 
Dendrophis calligaster, Gthr. Cape York. Purchased. 
*Leptodira nigrofasciata, Githr. Nicaragua. Dr, Seemann. 
*Dipsas ochraceus, Theobald. Pegu. Mr. Theobald. 
*Pythonodipsas carinata, Gthr. Zambeze. Museum of Cape Town. 
*Lycophidium acutirostre, Gthr. Zanzibar. Dr. Kirk. 
*Callophis japonicus, Gthr. Nagasaki. Mr. Whitely. 
*Elaps Batesii, Githr. Pebas. Mr. Hauxwell. 
*Atractaspis rostrata, Gthr. Zanzibar. Dr. Kirk. 
Plectrurus trilineatus (Bedd.). 
This is another very interesting addition made by Capt. 
Beddome to the family of Uropeltide. It differs from Plo - 
trurus proper, and, like Melanophidium, approaches the Cala- 
maride. The head is remarkably flattened, obtusely rounded 
in front; no mental groove; tail comparatively long, with a 
distinct double series of subcaudals, terminating in a horny 
shield, the edge of which is horizontal, and not vertical as in 
Plectrurus; the shield is one-, and not two-pointed. I propose 
the generic name Platyplectrurus for it. 
Silybura grandis. 
Rhinophis grandis, Beddome. 
This snake is more closely allied to Silybura ocellata than 
to Rhinophis pulneyensis, to which it has been compared by 
its discoverer. However, these species show that the distinc- 
tion between Silybura and Rhinophis is scarcely generic, and 
that they may be united before long. 
XENOCALAMUS (g. n. Calamar.). 
Body cylindrical, elongate ; tail short ; head long, depressed, 
narrower than the neck. LEye extremely small, vith round 
pupil; rostral large, conically produced, the mouth being quite 
at the lower side of the head; one pair of frontals; vertical 
enormous; occipitals small; nostril between two shields; 
loreal none; scales smooth, without apical groove, in seven- 
teen series; anal and subcaudals paired. Maxillary teeth few 
in number, smooth ; palate without teeth. 
