RetscHeK.—Zoology of the Chicken Islands. 275 
Nestor meridionalis, Gml. Searce. 
Chrysococcyx lucidus, Gml. Searce. 
Carpophaga nove-zealandia, Gml. Scarce. 
Larus dominicanus, Licht. Scarce. 
Procellaria lessoni, Garnot. Scarce. 
gouldti, Hutton. 
- cookit, Gray. 
Puffinus gavius, Forst. 
Dysporus serrator, Li. 
Graculus varius, Grol. 
nmnaa 
while on these islands it is still of frequent occurrence. Of the birds at least 
three, namely, Procellaria gouldii and cookit and Puffinus gavius, live soci- 
ably in the holes generally dug out by the tuatara (Sphenodon punctatum, 
Schtz.), and apparently on the best of terms with it. The tuatara excavates 
its hole mostly on the western slope of the islands. The entrance to the 
chamber is generally four to five inches in diameter, and the passage leading 
into the inner chamber is two to three feet long, first descending and then 
ascending again. The chamber itself is one foot and a-half long, by one foot 
wide and six inches high, and is lined with grass and leaves. The following 
rough sketches give (1) a section of the passage and inner chamber, and (2) 
a section along the greatest diameter of that strange habitation. On both 
sides of the entrance the two animals have their nests separately, so that 
they do in no way interfere with each other. On the right side lives 
generally the tuatara, and on the left the petrel. In one chamber I found 
one tuatara and one petrel with its eggs, in another one tuatara and one 
young petrel. 
