1905. ] DR. A. DUGES ON A NEW MEXICAN SNAKE. 517 
from Ishigaki and one from Iriomote. The scales behind the neck 
were 24 in one specimen, round mid-body 29 in one specimen and 
33 in the others. The ventrals were 336, 316, and 332. 
3. DistrrA oRNATA.—The three specimens were all from 
Okinawa. ‘The scales behind the neck were 29, 32, and 33; mid- 
body 35, 37, and 38. Ventrals 271, 268, and 251. 
4, AIPYSURUS ANNULATUS.—AIl the six examples were from 
Okinawa. Four had a sharp spine on the rostral which was absent 
on the other two. The prefrontals were very irregular. There were 
four in three specimens, two in one specimen, and three (2 right, 
1 left) in two specimens. In all one or both parietals were split 
by a suture behind. The scales were 17 in mid-body when the 
vertebral row was enlarged, which was usually the case, though often 
to a variable degree. In two specimens the scales were 19, the 
vertebrals being divided into three rows subequal to the other 
dorsals. Ventrals numbered 138 to 143, 
5. PLATURUS LATICAUDATUS.—The two specimens were from 
Okinawa. ‘The ventrals were 243 in one specimen; the last was 
divided in both specimens. 
6. PLATURUS SCHISTORHYNCHUS.—Of 37 specimens, 29 were from 
Miyako, 6 from Okimawa, and 2 from Amami. 
All the specimens were preserved in formalin. 
3. Description d’un Ophidien nouveau du Mexique (Morenoa 
orizabensis, g. et sp. nn.). Par Atrrep Dugés, M.D., 
C.M.Z.S. 
[ Received July 7, 1905.] 
(Text-figure 77.) 
Ce Colubride (Sous-fam. Colubrine) ne m’est connu que par 
deux exemplaires provenant d’Orizaba (Etat de Vera- Cruz) dot 
me l’a envoyé le Prof. Aniceto Moreno pour le déterminer. Ne 
le trouvant décrit dans aucun des ouvrages que j’ai pu consulter, 
jai du lui donner un nom générique et spécifique nouveau et je 
le dédie 4 mon ami M. Moreno. 
Ses rapports les plus intimes sont avec le g. Ablabes, tel que 
Va compris Boulenger (Catal. Snakes of Brit. Mus. 1894); mais 
ilen différe assez pour l’en séparer, comme le prouve sa description. 
Les vertébres dorsales posterieures manquent d’hypapophyses. 
La dentition est isodonte : il m’a semblé quil y avait une douzaine 
de dents au maxillaire supérieur, mais je n’al pu m’en assurer 
exactement pour ne pas trop mutiler l’exemplaire que je pouvais 
examiner. L’aspect général est celui d'une Coronella. 
Caractéres.—La rostra le se replie un peu sur le museau. Les 
internasales sont un peu plus petites que les préfrontales; celles-ci 
