144 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
first used cyclura as a specific name for what he called L’Iguane de la 
Caroline. After what Catesby said we imagine that he had a Bahaman 
specimen which had been carried to Carolina and had probably been 
sent to Paris from there. Which Bahaman species he had it is impos- 
sible to decide from his meagre descriptions. So unless the type is 
still in existence and sufficiently well preserved, which is improbable, 
it will not be possible to more than surmise that Cuvier probably 
had a specimen of C. baeolopha. Stejneger and Barbour have both 
used the name Cyclura cyclura Cuv. for the Cuban Iguana and this 
might be considered as restricting the name. It is probably better 
to drop the name altogether until someone studies this old type, and 
also the type of nubila in the British Museum. 
KEY TO THE SPECIES. 
a Median frontal shield enlarged and tubercular. 
bt Nasals broadly in contact with the rostral................ .stejnegeri. 
b2 Nasals separated from the rostral by small scales, or granules. 
c’ Posterior prefrontals separated from the frontal shield by two rows of 
seales. . etal yf kas .nigerrima. 
ce Pestericr prefrontals cepereted Hon ae frontal ahield by a single row 
of narrow scales........ See I CORILILOLS 
a? Median frontal picid” very ciency enlereen! “AG eabercuiae 
bt Nuchal section of dorsal crest formed of spines much longer than those 
of the back section. 
c! Prefrontal and frontal scales small and irregular.......... .carinata. 
c Prefrontal and frontal scales enlarged and definitely arranged. 
d' Nuchal section of dorsal crest formed of 14 bie some twice as 
wide as the others. . Cee Nese se LUCRGLUSe 
d? Nuchal section of dorsal ape! Premed a 20, spines, all A about the 
same width. Seine epee . rileyt. 
b? Nuchal section of Frc crest formes iis spines ot eames bos than 
those of the back section 
ch Seales covering the upper surface of the head flat, depressed, the 
interstices forming a network; dorsal crest continuous on the 
shoulders. . AES yeas . collet. 
c? Scales covering nthe upper fenced oF ihe hesah Eaeonlly, ane snout, 
swollen; dorsal crest interrupted on the shoulders. 
d' Infralabials separated from the molar scales by a single discontinuous 
row of scales; canthal scale very much larger than the precanthal. 
e! A single, large, flat median frontal; gular region the same color 
as. ventral surface. 02 jp -acw oo emcerhe cae Sees ap ieee OE OUanetee 
