KONGL. SV. VET. AKADEMIKNS IIANDLINGAH, BANI> 26. N:() 2. 85 



Diploncis iitferriipta is a very variable spe(;ies, ami appeal's to graduate into J>. incurva. 

 The specimens in the deposits of Hungary are corroded, so that it is not easy to decide whether 

 they really belong to D. interrupt a or not. So far as I can see from the descriptions and figures, 

 there is no difference between New. Wicsneri and New. interrupta vor. fossiiin Pant. The same is 

 also the case with the nearly related forms New. Ilcerii and Nav. Gorjonovicit Pant. 



21. D. (iiiinardiana Brun. (181S9). — V. elongated, panduriform, witli narrow elliptical seg- 

 ments. L. (),()8 to 0,095; B. 0,018 to 0,028; at the constr. 0,ooy to 0,017 mm. Central nodule 

 small, quadrate; its horns parallel, approximate. Furi'ows very narrow, linear, (,'ost.e H in 0,01 

 mm. smooth, almost parallel. — Nav. Gnin. Brun. a. Tkmp. D. de Japon p. 43 PI. V f. 'J. 



Marine: Madagascar! Sumbava! Macassar Straits' Japan, fossil (Brun). 



22. D. Adonis Brun. (1889). — V. stout and panduriform. L. 0,i to 0,i2r); B. 0,();j5 to 

 0,045; at the constr. 0,024 to 0,028 mm. Segments elliptical. Central nodule large, quadrate; its 

 horns divergent. Furrows narrow linear. Costse 5 in 0,oi mm. smooth, curved; strongly incrassate 

 at the margin of the valve (or in certain focus alternating with a punctum). — Nur. Adonis Brun 

 a. Temp. D. f. du Japon p. 41 PL V f. 3. 



Marine: Mexilones! Iquique! Yedo, fossil (Brun). 



Var. (jihhoaa Brun (1889). — Segments deltoid. — Nac. Adotiw v. yihh. Brun 1. c. f. 2. 



Marine: Mexillones, Peru! 



Var. Ganymedes Cl. — L. 0,o7 to 0,i ; B. 0,o25 to 0,03; at the constr. 0,o 17 to 0,022. Costae 

 7 to 8 in 0,01 mm. 



Marine: Peru (Mexillones! Iquique!) Madagascar (Kinker Coll.)! 



Var. Oamaruensis Cl. — L. 0,045 to 0,o5; B. 0,oi5 to 0,oi8; at the constr. 0,oi to 0,012 

 mm. Costse 9 in 0,oi mm. — Nac. Apis GirROVE a. Sturt. A. S. Atl. CLXXIV f. 13. 



Marine: Oamaru, New Zealand, fossil! 



D. Adonis comprises a series of forms from the small var. Oamariiensis to the large typ- 

 ical D. Adonis, which are doubtful as species, as they have \-ery much the appearance of being- 

 corroded. 



23. D. lineata Uonk. (185H). — V. elliptical to linear-elliptical. L. 0,o4 to 0,o8; B. O.oio 

 to 0,032 mm. Central nodule quadrate; its horns convergent at the ends. Furrows rather narrow, 

 smooth, or with one to two rows of puncta. Costte 9 to 10 in 0,oi mm., crossed by a longitudinal 

 line, smooth. — Nav. lineata Donk. T. M. S. VI p. 32 PI. Ill f. 17. B. D. p. 8 PI. I f. 8. A. S. 

 N. S. B. PI. I f. 1(), 17. Atl. VII f 44, LXIX f. 31; LXX f. 67. Nao. adriatica (Jrun. Verh. 

 18H0 p. 525 PI. Ill f. 17. 



Marine: North Sea (Coasts of Scandinavia and England)! Mediterranean Sea (Balearic Is- 

 lands, Gulf of Naples)! Adriatic! 



Forma pusiUa Cl. — L. 0,032; B. 0,oi4 mm. Costtu 11 in 0,oi mm. 

 Marine: Galapagos Islands! 



24. D. Vetula A. S. (1875). — V. elliptical, very slightly constricted in the middle with 

 broad rounded ends. L. O.os; B. 0,024 ram. Central nodule broad, quadrate, its horns parallel. 

 Furr(jws broadest in the middle, gradually tapering to the ends. Costie 10 in 0,oi mm., crossed 

 near the margin by a line. — Nav. Vetula A. S. Atl. XII f. 49. 



Marine: Sansego (Atl.). 



25. D. Papilla A. S. (1>S75). -- V. elliptical. L. 0,023; B. 0,oi toO,oii mm. Central 

 nodule small; its horns somewhat divergent. Furrows linear, narrow. CostcE about 13 in 0,oi 

 mm. crossed by one longitudinal line. — Nav. Papula A. S. Atl. VII f. 45 to 47. 



Marine: Samoa (Atl.) Campeachy Bay (Atl.). 



