38 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



2. Peropus mutilatus (Wiegmann) 



This widely distributed gecko was not secured on Guam by 

 our collector. The Paris Museum, however, has received it 

 from the Ladrone or Mariana Islands. 



3. Peropus oceanicus (Lesson) 



The Paris Museum also possesses this species from this 

 group of islands. It was not found on Guam by our collector. 



4. Lepidodactylus lugubris (Dumeril & Bibron) 



We have received from Guam a number of specimens of 

 this gecko. The species is known to occur in all the neighbor- 

 ing groups of islands, — the Marshall, Caroline and Pelew 

 islands, — but, I believe, has not previously been collected in the 

 Ladrones. The specimens from Guam seem in every respect 

 like those from the Hawaiian Islands, with which I have com- 

 pared them. 



5. Varanus indicus (Daudin) 



Our collector secured on Guam a skin of this monitor which 

 measured 1060 mm., of which 600 mm. represent the tail. 

 Number 4876 of the Academy's collection was a skin, 1660 

 mm. in length (tail 1020 mm.), labeled merely Ladrone 

 Islands, where it was secured by Mr. Crawford. Both these 

 specimens were destroyed in the great fire of April, 1906, but 

 we have since secured a small alcoholic specimen from Guam. 



A living specimen was seen on the ground a mile inland 

 from the town of Agaiia. 



6. Emoia cyanura (Lesson) 



The only skink found on Guam is this common species which 

 has long been represented in the Paris Museum by specimens 

 from the Mariana Islands. It was very plentiful on stone 

 walls, rock heaps and trunks of trees near the roots, also in 

 the underbrush and among dead leaves. 



