280 BARBOUR: ZOOGEOGRAPHY. 



no topotypes were available for comparison. So that these opinions as to the 

 status of Gray's species carry no weight whatever, since with Anoles such matters 

 can be settled only by the comparison of well authenticated material from a 

 definite locality. Unfortunately the case was complicated by the fact that 

 Gray's A. occipitalis had no definite data regarding origin; and his type of A. 

 stenodactylus was said to come from Jamaica, where the species does not occur. 

 Until these types can be critically compared with Tortola specimens, their status 

 must remain unsettled. 



Anolis trossulus Gakman. 

 Gauman, Bull. Essex inst., 1887, 19, p. 14. 



This lizard, which Garman found abundant in Grenada in 1887 is still by far 

 the most abundant reptile on the island; and Dr. Allen obtained a very large 

 series, and brought back as well living examples, two of which successfully passed 

 through a New England winter at ordinary room temperatm-e. They feed 

 voraciously on flies and meal worms, and make most interesting pets. The 

 following are Allen's field notes regarding the color of the gular appendage in 

 wild living examples : — 



"Gular sac dark browai on anterior edge, and on the anterior part of the 

 scale rows; posterior ventral edge paler brown; scale-rows on posterior half, or 

 two-thixds of the sides of the sac, are pale greenish yellow, the skin between the 

 rows pale tea-color." 



Allen records many wild specimens as being "nearly blackish above with 

 greenish mottlings; below chin green, angles of jaw white with black mottlings, 

 belly green; inside of legs green." In our living specimens here in captivity, 

 the most common condition is a uniform or slightly mottled or clouded rich 

 brown above, on each side a lateral band of light green. The belly is Ught green, 

 limbs barred or mottled with green and brown. This color may change under 

 excitement to uniform brownish or greenish, or to a condition where dark cross- 

 bars are present on the dorsum. A short, very light green stripe near the axilla, 

 and white lines on the lips, are frequently present. The green lateral band is 

 seldom lost, and that only under conditions of the greatest fright or excitement. 

 The color phases appear to be very clearly controlled by the emotions, as is 

 common with other color-changing reptiles. While this is not the sole factor 

 underlying metachrosis, it is certainly far more important than many experi- 

 mentahsts are wont to believe. I know of no field observer of living lizards who 

 has not been impressed this same way. 



The types of this species are M. C. Z., No. 6,181. 



