FISH. 95 



A second specimen slightly differs from the above, but is evidently referable to the same 

 species. It is smaller ; and the profile falls more gradually. The caudal has only eight 

 branched rays, with two lateral simple ones. The pectorals have the tenth and eleventh rays 

 longest, with the seven lowermost (instead of six) stouter than the others and simple. The fin- 

 ray formula is also different. 



D. 6—19—13; A. 25; C. 10, &c; P. 17; V. 2. 

 Length 2 inc. 1 line. 

 The colours are paler, and more decidedly grey, with the darker motlings more distinct. 

 The dorsals and caudal are pale, minutely dotted with brown. Tips of all the anal rays white. 



Habitat, Bay of Islands, New Zealand. 



This species approaches very closely the T. nigripenne of Cuvier and Valen- 

 ciennes, of which it may possibly be a variety; but the description in the " Histoire 

 des Poissons," as regards the form, is limited to a very few words. If the figure 

 given by those authors be correct, the T. nigripenne differs decidedly in the first 

 dorsal being more elevated, Math the rays more unequal, and in the lateral line 

 extending the whole length of the fish. In the present species the first dorsal is 

 low and even, with the rays all equal, and the lateral line cannot be traced 

 much beyond the pectoral ; and these characters are found in both specimens. 

 There are also six rays in the first dorsal. According to the description, the 

 T. nigripenne has but five, though six are represented in the figure. 



From the T. varium, this species differs not only in its fin-ray formula, but in 

 its markings : and the same characters serve to separate it still more widely from 

 T. Forsteri and T. fenestration. 



This species was obtained by Mr. Darwin on tidal rocks in the Bay of Islands, 

 New Zealand. Three out of the only four extra-european species described by 

 Cuvier and Valenciennes come from the same locality. 



Family.— GOBIDiE. 

 1. Gobius lineatus. Jen. 



Plate XIX. fig. 2. 

 G. nigro-griseus, lineis circiter decern longitudinalibus nigris: capitelato, subdepresso; 

 genis injiatis: maxillis cequalibus: deutibus velutinis, externis fortioribus aculeifor- 

 mibus ; caninis nullis: oculis amplis, mtervallo vix plus quant semidiametrum 

 aquante : pinnis dorsalibus contiguis, altitudine subcequalibus ; pectoralibus radiis 

 stipends setaceis, liberis ; caudali rotundata : squamis mediocribus, levissime ciliatis. 

 B. 5; D. 6-1/9; A. 1/8; C. 13, &c. ; P. 7 et 16; V. 1/5. 

 Long. unc. 4. lin. 8. 



