10 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



Subfamily Malletiinae 



Genus MALLETIA Desmoulins 

 Section NEILO Adams 



MALLETIA DILATATA Philippi 



Nucula dilatata Philippi, Moll. Sicil., vol. 2, p. 47, pi. 15, fig. 7, 1844. 

 Neilo dilatata Seguenza, Nucul. Terz., p. 1184, 1877. 



Malletia {Neilo ?)dilatata Dall, Bull. Mus. Comp. Zool., vol. 9, No. 2, p. 

 255, 1881. 



Off Fernandina, two valves. Off Morro Light, Havana, in 292 

 fathoms, U. S. S. Blake. 



Genus TINDARIA Bellardi 



TINDARIA CVTHEREA Dall 



Nucula {Tindaria?) cytherea Dall, Bull. Mus. Comp. Zool., vol. 9, p. 123, 1881; 



vol. 12, No. 6, p. 254. 

 Malletia veneriformis E. A. Smith, Challenger Pelecypoda, p. 246, pi. 20, figs. 

 9, 9a, 1885. 



Off Fernandina, not rare. Gulf of Mexico and eastward to St. 

 Vincent, United States Fish Commission. 



TINDARIA ACINULA Dall 



Malletia (Tindaria) acinula Dall, Proc. U. S. Nat. Mus., vol. 12, No. 773, p. 



253, pi. 13, fig. 4, 1889. 

 Tindariopsis {? Neilonella) acinula Dall, Trans. Wagner Inst., vol. 3, pt. 4, 



p. 582.— Verrill and Bush, Proc. U. S. Nat. Mus., vol. 20, No. 1139, 



p. 881, 1898. 



Shell small, smooth except for incremental lines, whitish, inflated, 

 the anterior end shorter, evenly rounded ; posterior end longer, pointed, 

 the dorsal slope sharp, the base arcuate; erect; ligament dividing the 

 hinge line, teeth about 10 on each side; pallial line with a slight 

 indentation near the posterior scar. Length, 5.0; height, 3.5; diam- 

 eter, 3 mm. U. S. Nat. Mus. Cat. No. 108195. 



Off Fernandina, a dozen valves. East of Tobago in 880 fathoms; 

 south of St. Kitts, 687 fathoms; and 98 miles north of Ceara, Brazil, 

 in 1,019 fathoms; U. S. S. Albatross. 



Genus PSEUDOGLOMUS Dall 



PSEUDOGLOMUS POMPHOLYX Dall 



Yoldia pompholyx Dall, Proc. U. S. Nat. Mus., vol. 12, No. 773, p. 255, pi. 



13, fig. 8, 1889. 

 Tindaria (Pseudoglomus) pompholyx Dall, Trans. Wagner Inst., vol. 3, pt. 

 4, p. 582, 1898. 

 Off Fernandina, nine valves. 



Externally like Pristigloma, but without the internal resilium of 

 that genus; with a central external short ligament and more substan- 

 tial hinge teeth, about seven anterior and nine posterior in the adult. 



