T 'ENEZ VELA N BA TEA CHI A NS, REPTILES— STEJNEGER. 185 
In 1768 Linnasus established the genus Boa^ in which, among other 
species, he inchided B. canlnd, B. e<))i><tr!ct(>r, and B. orophias. Of 
course he indicated no generic type, which must 
therefore be ascertained by the process of elimi- 
nation. In 1768 Laurenti subdivided the genus 
into two genera, for one of which he retained 
the name Boa., proposing Constricfor for the 
other. Boa he made to contain three nominal 
species, but they all belong as synonyms to Lin- 
nteus's B. canina, which, therefore, must stand 
as the type. Go7iHtHctoi\ on the other hand, 
contains the two 
other Linnean 
species mention- 
ed above (the 
additional B. di- 
FiG. 0. — Boa kusche^j- 
BERGII, X Ij. 
vlnoloquus])Q\\\g 
only a synonym 
of B. (rroj/hiafi). 
Fig. 7.— Boa rischenbergii, x Ij. 
The case is as plain as it can possibly be, and the well-known Boa 
QondT)cfj:>r must henceforth be known as Constrictor con.strletor. 
List of specimens. 
U.S.N.M. 
No. 
Collector's 
No. 
Locality. 
When col- 
lected. 
Scales. 
Ventruls. 
Subcau- 
dal.s. 
27832 
Rio Chico 
43 
260 
109 
PHRYNONAX LYONI, new species. 
D!a(/iioi<!s. — Scales in 23 rows, smooth except three median ones 
which are feebl}^ keeled; ventrals r.>!>; anal 1; subcaudals 111 pairs; 
preocular well separated from the frontal; eight upper labials, posterior 
very long; interparietal suture equals length of frontal as well as the 
distance of the latter from tip of snout. 
Ti/jM'.—Cut No. 27826, U.S.N.M.; Macuto, Venezuela; August 1, 
1900; M. W. Lyon, jr., collector, 
Jlalj'itat. — Venezuela. 
Description of type specimen. — Rostral much l)roader than deep, 
visible from above; internasals slightly shorter than prefrontals; 
frontal much longer than ])road, as long as its distance from the tip of 
the snout, and as long as the interparietal suture; parietals as long as 
frontal and half the interprefroutal suture; loreal as long as deep; one 
preocular, not in contact with frontal; two postoculars; tempora-is 
2 + 2; eight supralabials, fourth, fifth, and sixth entering eye, eighth 
