144 Bulletin American Museum of Natural History. [Vol. XXXIV, 
Xystema havana Nichols. 
Two specimens detected among Gerrids obtained from boys who said 
they were captured at Fort San Geronimo. It is difficult to differentiate 
this form from species of Eucinostomus without dissection. 
Eupomacentrus atrocyaneus (Poey). 
Among other fishes of this genus obtained from boys at Santurce July 20, 
doubtless caught in San Juan Bay, is one more slender specimen with differ- . 
ent fin and body outlines, No. 4911, American Museum of Natural History, 
which is referred to atrocyaneus (Poey), erroneously pynanyanized with 
fuscus (Cuvier & Valenciennes). 
Eupomacentrus chrysus Bean. 
A single specimen was captured July 15 near shore in shallow water 
beside an old iron hulk not far from San Antonio bridge. It agrees well with 
the type description and figure of the species. In life it had the following 
colors: orange-yellow all over; back dorsal and anal edged with dusky 
which extended down the sides in narrow bars; large dark-blue oval on base 
of soft dorsal, extending onto back, edged with light-blue. Smaller, similar 
circular ocellus on peduncle; dark-blue spot at base of pectoral; iris dusky. 
Abudefduf analagus (Gill). 
A single specimen about 170 mm. in total length, from Condado Rocks, 
July 18, has been compared with the type of analagus in the United States 
National Museum, a fish of about the same size, of which it is almost the 
counterpart. 
Thalassoma nitidum (Giinther). 
Small mdividuals were very common in tide pools and close to shore 
among the rocks in the vicinity of San Juan; several were obtained. 
Thalassoma bifasciatum (Bloch). 
A single specimen obtained at Santurce from boys, July 21. 
