MARINE MOLLUSKS OF THE SOUTH-EASTERN COAST. 205 



PLATE LXXXIII. 



FIG. 1. Erycina (Pseudopythina) compressa Dall; 18.0 mm. No. 107855, U.S.N.M. 

 Bering Sea. 



2. Ihrnia relifera Dall; 12.0 mm. No. 107856, U.S.N.M. The microscopic 



reticulation is too tine to be represented on the scale of the figure. 



3. liochefortia barbadensia Dall; 4.0 mm. No. 95703, U.S.N.M. Barbados. 



4. Gebia puyetensis Dana, with Erycina (Pseiidopythina) rugifera Carpenter, 



attached by its byssus to the abdomen of the crab behind the limbs. 

 Natural size. Drawn from nature by Dr. J. C. McConnell. Xo. 15789, 

 U.S.N.M. Puget Sound. 



5. Montacuta limpida Dall; adult type; 3.0mm. No. 97155, U.S.N.M. Florida. 



6. Rochefortia aleutica Dall; 4.3 mm. No. 108233, U.S.N.M. Kiska Harbor, 



Aleutian Islands. 



7. Rocliefortia tumida Carpenter ; type specimen ; 3.8mm. No. 5242, U.S.N.M. 



California. 



8. Hinge of Erycina (Pseudopythina) compreysa Dall; right valve, considerably 



enlarged; c, cardinal tooth; p, prodissoconch ; rl, resilium covered by 

 the large calcareous lithodesma; I, raised edge of the valve carrying the 

 linear external ligament. 



9. Sportella stearnsii Dall ; enlarged view of hinge, right valve, c, c', cardinals ; 



I, nymph for the ligament; p, prodissocouch ; r, excavation and ridge 

 which carry the resilium. 



10. Montacuta Jioridana Dall; interior of right valve; 16.0 mm. No. 64456, 



U.S.N.M. West Florida. 



11. Montacuta limpida Dall; young shell; 1.6 mm. No. 107867, U.S.N.M. 



Florida. 



12. Sportella stearnsii Dall; 13.5 mm. No. 73071, U.S.N.M. Gulf of California. 

 This plate first appeared in Proceedings U. S. National Museum, vol. xxi, with the 



Synopsis of the Leptonncea, pages 873-897, in which the species are described. 

 Figures 1, 2, and 4 were drawn from nature by J. C. McConuell, the others are from 

 camera lucida sketches by W. H. Dall. 



PLATE LXXXIV. 



FIG. 1. Erycina emmonsi Dall; 7.0 mm. No. 92638, U.S.N.M. North Carolina. 



2. Anifsodoxia (Fulcrella) corbuloidea Dall; 6.5 mm. No. 92303, U.S.N.M. 



North Carolina. 



3. Erycina periscopiana Dall; left valve; 5.0mm. No. 92227, U.S.N.M. North 



Carolina, 



4. Rochefortia pedroana Dall ; 9.0 mm. No. 127565, U.S.N.M. California. The 



subumbonal projection between the laminaj is the resilium. 



5. Sportella californica Dall ; 6.0 mm. No. 108231, U.S.N.M. The drawing rep- 



resents the right valve, and the posterior projection of the hinge plate 

 carries the resilium. 



6. Erycina fernnndina Dall; 3.75 mm. No. 108230, U.S.N.M. Deep water off 



Florida. The dark spot to the right of the cardinal tooth is the resilium. 



7. Erycina linella Dall; 4.6 mm. No. 107863, U.S.N.M. North Carolina. 



8. Montacuta minuscula Dall; 2.7mm. No. 92628, U.S.N.M. North Carolina. 



9. Sportella pilsbryi Dall; 8.0mm. No. 107864, U.S.N.M. Left valve. North 



Carolina 



10. Jiornia (Ceratobornia) longipesStunpsoji:, about one and a half times natural 



size. From an unpublished drawing by Stimpsou, representing the ani- 

 mal crawling, the right side facing the observer. South Caroliua. Shell is 

 No. 107812, U.S.N.M. ; p 48. No. 201. 



11, The same, representing the animal suspended by its byssal thread, the heel 



of the foot elongated. Drawn by Stimpson, 



