338 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 57. 



The above mentioned specimens were sent me by Doctor Bloch- 

 mann. On examination of the loop I am compelled to the conclusion 

 that the details do not agree with the type of the genus Kingena as 

 figured from the original fossil, but that there is really no essential 

 difference between the loop of alcocki and Frenulma sanguinolenia. 

 I have therefore referred the species to Fremdina. 



FRENULINA MAUIENSIS, new species. 



Shell large for the genus, pale brown, medially slightly compressed, > 

 moderately convex; valves sculptured only with concentric growth 

 lines at wide intervals, and a very obvious minute and dense punctu- 

 ation; pedicel valve with rather elevated and incurved beak, the for- 

 amen entire, the deltidia more or less coarsely wrinkled and seem- 

 ingly not meeting but united by an irregular plug between their 

 proximal edges; hinge teeth strong and close together with props in 

 the younger shells which are solidly cemented to the wall of the shell 

 in the adult; no traces of any medial ridge or septum; the anterior 

 margins of the valves pinched together medially but not perceptibly 

 folded ; brachial valve less convex, cardinal plate solidly united over 

 the septum, excavated in the middle, with strong dental sockets and 

 no cardinal process, the septum thin, high and short, not extending 

 beyond the middle of the valve distally; crura short, widely triangular; 

 the lower limbs of the loop of almost hairlike tenuity, the reflected 

 limb broad behind; height of shell 22; breadth 21; diameter 10 mm. 

 U. S. Nat. Mus. Cat. No. 173035. 



Type locality. — North coast of Maui Island, Hawaiian Islands, in 

 143 to 178 fathoms, stony bottom, temperature 60°.8 F., at Bureau of 

 Fisheries station 4079. 



This fine species was dredged by the U. S. Bureau of Fisheries 



steamer Albatross during the explorations among the Hawaiian 



Islands. 



Genus TEREBRATALIA Beecher. 



Tcre&mtaKa Beecher, Ti'ans. Conn. Acad., vol. 9, p. 377, 1873. 



Terebratula Sowerby, Proc. Zool. Soc, 1846, p. 94. 



Terebratella (part) Orbigny, Pal. Franc. Ter. Cr^t., vol. 4, p. 110, 1847. 



Type. — T. transversa Sowerby, Northwest America. Until we 

 know the developmental stages of aU our northern species, it seems 

 best to follow Beecher in referring them all to Terehratalia. 



