68 FISHES FROM BRAZIL 



mottled with dark slate blue. There is a dark spot on the pectoral base in 

 front. The fins, except the dorsals, are dusky, the ventral being darker than 

 the others. The dorsals are crossed by many fine, dark oblique lines. 



This species differs from the other gobies of this genus with lanceolate 

 caudal fins in having cycloid scales. 



Numerous specimens were taken with the seine in a large pool in the 

 sand left by the high tide near the mouth of the harbor at Natal. A few 

 were seined on the muddy mangrove tide flats, but none were found in the 

 rock pools. They are from 4 to 5 inches in entire length. 



209. Mapo soporator (Cuvier and Valenciennes). 



This comjnonest of all tropical American gobies was found in abundance 

 in the rock pools at Natal and Ceara. 



210. Ctenogobius boleosoma (Jordan and Gilbert). 



Several specimens were taken in the rock pools at Natal, thus materially 

 increasing the range of this species. It has been taken hitherto only at Pensa- 

 cola, Florida. They have been compared with the cotypes. 



211. Ctenogobius glaucofrsenum (Gill). 



Three specimens of this goby were taken in the rock pools at Natal. 

 Up to this time the species has been known only from the West Indies. 

 They had no blue spots on the body or blue markings across the cheek such 

 as was described for the type, or by Dr. Eigenmann for specimens from the 

 Tortugas. 



The following color notes were taken from living specimens. The 

 ground color of the head and body is translucent flesh-color. Two rows of 

 rusty red spots extend along the side at regular intervals, and another along 

 the base of the dorsal fins. There are two black spots at the base of the 

 caudal fin, which are more or less run together in a dumbel-shaped spot. A 

 dark brown wavy band extends back from the snout through the eye to above 

 the pectoral base, and a narrower one below it and parallel with it, from the 

 snout across the cheek to the base of the pectoral. The caudal is pinkish, 

 and the other fins are colorless, except the pectoral which is slightly yellow 

 at the base. 



212. Microgobius omostigma Starks, new species. 



Plate 11. 



The head is contained from 3^ to 3^ times in the length to the caudal 

 base, the depth from 4 to 4^4 times, and it is twice that of the width. A 

 fleshy ridge runs forward from the dorsal fin and ends at the occiput. The 



