12^ 
ZOOLOGICAL LITERATURE. 
Boidas. 
Aspidiotes melanocephalus (KrefFt). Some remarks, on its dentition by Dr. 
Guntlier, Ann. & Mag. Nat. Hist, xviii. p. 29. 
HYDROPIIIDiE. 
Ilydrophis. Dr. J. Sliortt lias described an example of double-beaded 
monstrosity, wliicli, being 12^ indies long, must have lived for some time. 
Jourri. Linn. Soc. ix. 186G, pp. 49-50, with a woodcut. 
ElAPIDA3. 
Iloplocephalus, Mr. KrefFt describes two new species in Proc. Zool. Soc. 
1800, viz. II. ater and II. mastersii (p. 370), from Blinders Pange, and a 
variety of II. gouldii, from Port Lincoln. 
Mapsoidea, g. n., Bocage, Jorn. Sc. Math. Phys. e Nat. Lisb. 1800, no. 1. 
Anterior fangs grooved, with three or four small smooth teeth behind. 
Snout rounded ; eyes of moderate size, tail rather short. Two nasals, no 
loreal ; posterior frontals in contact with the third labial. Scales smooth, in 
13 rows j anal simple j caudals partly simple. JE. giintheriif sp. n., p. 70, pi. 1. 
fig. 3, from Angola. 
Nttfa nigricollis. A variety from Angola is described by Dr. Bocage, 1. c. 
p. 71. 
Atractaspis microhpidota^ sp. n., Giinther, Ann.' & Mag. Nat. Hist, xviii. 
p. 29, pi. vii. fig. 0, from West (?) Africa. 
Atractaspis eorpidentus (Hallowell). A variety is noticed by Gunther, ibid. 
Atractaspis fallax, sp. n., Peters, Monatsber. Ak. Wiss. Berlin, 1800, p. 890, 
from Eastern Africa. Prof. Peters thinks that all the species of this genus 
may prove to be varieties of one [which view will hardly be adopted on 
comparing the typical specimens]. 
CrOTALID/E. 
Crotalus. Mr. Cope gives a synopsis of eighteen species or varieties of 
Catidisona, Proc. Ac. Nat. Sc. Philad. 1800, pp. 308-310, describing one as 
new, viz. Caudisma pyrrha, and proposing the generic name Aploaspis for 
Caudismia lepida (Kennicott). 
Prof. Giebel describes the skeletons of Crotalus horridus and durissus, and 
Lachesis mutus. Zeitschr. ges. Ntrwiss. 1800, pp. 172-180. 
ViPERIDAfi. 
Vipera aspis. Comte J. de Mac-Mahon relates that on the 25th of January 
1804, 140, and some days afterwards 60 other specimens of the ^Wipere 
aspic ” were found in one lump below a stone in the middle of a spring the 
water of which never freezes. M^m. d’Hist. Nat. Soc. Eduenne, i. p. 248. 
Ilalys himalayanus (Gthr.) extends to an altitude of 10,000 feet above the 
level of the sea in the North-western Himalayas. Stoliczka, Verb. zool. -hot. 
•Ges. Wien, 1800, p. 808. 
PSEUDOPHIDIA. 
SipJionops syntremus, sp. n.. Cope, Proc. Ac. Nat. Sc. Philad. 1800, p. 129, 
from Honduras. 
Coccilia ochrocephala, sp. n., Cope, 1. c. p. 132, from Panama, 
