REPORT ON THE LAMELLIBRANCHIATA. 107 



shorter, also nearly rectilinear or feebly concave and mitcli more sloping. The lower 

 ovitline is only a little convex towards the anterior end, where it curves upwards, forming 

 together mth the down-curving end of the dorsal line a sharply rounded extremity. The 

 ventral margin is straight or even a little incurved towards the narrowed end, and only 

 slightly and gently ascending. The left valve has a single triangular subbifid cardinal 

 tooth situated just a little anterior to the tips of the umbones. In the right valve there 

 are two, whereof the hinder one is similar to that in the left, and placed immediately 

 beneath the beak, so that when the valves are closed it has a posterior position to that of 

 the left valve. The front tooth is smaller, narrower, and forms as it were the end of the 

 lateral tooth. The side-teeth are elongate and well developed, and especially noticeable 

 in the right valve, in front extending along the greater part of the dorsal margin. The 

 internal ligament is small, narrow, placed behind the cardinal teeth, and slopes backwards. 

 The pallial sinus is very elongate, extending almost as far as the anterior muscular im- 

 pression. 



Length 11 mm., height G, diameter 2f. 



Hahitat.- — Port Jackson, Sydney, in 2 to 10 fathoms; also Flinders Passage, Torres 

 Strait, in 7 fathoms ; and Levuka, Fiji Islands, in 12 fathoms (Challenger) ; Sow and Pigs 

 Bank, Port Jackson (Angas). 



This interesting little species has all the external appearance of a Tellinella, but of 

 course is quite distinct on account of the hinge-characters. The white variety is appa- 

 rently more common than the rose-coloured, jiidging from the series of specimens at 

 hand. 



A second species described by Sowerby in his monograph of Tellina under this name, 

 TelUna tenuilirata (Conch. Icon., species 253), is a large shell having much the form of 

 Tellina loerna, but differing in the character of the sculpture. 



The specimens dredged in Flinders Passage and oif Levuka are smaller than typical 

 forms from Port Jackson, and are probably not full-grown. The latter series are very 

 like those from the coast of New South Wales as regards form, but rather more coarsely 

 striated, especially towards the hinder end. The shells from Flinders Passage are not 

 quite so elongate as the others, or hardly so acuminate at the posterior extremity, stiU I 

 believe it would be unwise to describe and name as distinct species forms presenting such 

 slio'ht differences. 



Tellina ( ?) fijiensis, Sowerby. 



Tellina fijiennis, Sowerbj', Conch. Icon., vol. xvii. fig. 300. 



Testa transversim oblonga, antice rotundata, postice angustata et cuneata, compressa, 

 valde insequilateralis, nitida, concentrice confertim striata, interstitiis prope latus posticum 

 paulo elevatis, sublamelliformibus, dilute salmonea vel lactea, raaculis semipellucidis 



