ASPERGILLUM 



Plate IV. 



Species 14. (Mus. Cuming.) 



Aspekgillum clavatum. Asp. testa valvis oblongo-ova- 

 tis, vay'aue prolatione bif areata partim indutis ; vagina 

 longd, attenuatd, curvata, arenulas calculosque minutos 

 agglutinante ; fimbria regulariter declivi, tubulis sttb- 

 elongatis, confertis, hie illic dichotoinis ; disco parvo, 

 perforationibus paucis, valde irregularibus, inter dum, 

 subtubulosis. 



The club-shaped Aspergillum. Shell with the valves 

 oblong-ovate, partially covered with a bifurcated hood 

 of the sheath ; sheath long, attenuated, curved, ag- 

 glutinating sand and minute pebbles ; frill regularly 

 sloping, tulies rather elougately close-set, here and 

 there forked ; disc small, perforations few, promiscu- 

 ous, very irregular, sometimes tubular. 



Chenu, Mus. Conch. Asp. p. 4. pi. 4. f. 4, 4 a. 

 Arytene tuberculata, var., Gray. 



Hab. ? 



The valves of this species are partially covered by a bi- 

 furcated tubercular hood projecting from the shield. The 

 disc of the shell is small, and the perforations are few and 

 extremely irregular. 



Species 15. (Mus. Cuming.) 



Aspergillus! incrassatdm. Asp. testa valvis oblowjo- 

 ovatis, vagina prolatione bif urcatd partim indutis ; va- 

 gina mediocri, subcontortd, calculos parvos sparsim ag- 

 glutinante ; fimbria plus minus irregulariter distort//', 

 tubulis hie ill ie dicltof otitis ; disco parvo, perforatio- 

 nibus paucis, valde irregularibus. 



The thickened Aspergillum. Shell with the valves 

 oblong-ovate, partially covered by a bifurcated hood 

 of the sheath ; sheath moderate, somewhat contorted, 

 sparingly agglutinating small pebbles ; frill more or 

 less irregularly distorted, tubes here and there forked ; 

 disc small, perforations few, very irregular. 



Chenu, Mus. Conch. Asp. p. 4. pi. 4. f. 2. 2 a, b. 

 Aspergillum Recluzianum, Chenu. 

 Argtene tuberculata, var., Gray. 



Hab. ? 



It is impossible to say whether this is or is not a va- 

 riety of the preceding species without a more extended 

 series of specimens. It has a more irregular, distorted 



growth, which may be permanent, and not the result of 

 accident. 



Species 16. (Mus. Cuming.) 



Aspergillum tuberculatum. Asp. testa valvis ovatis, 

 vagina prolatione bif areata partim indutis; vagina at- 

 tenuatd, subcurvatti, arenulas calculosque parvos agglu- 

 tinante ; fimbria regulariter declivi, coutractd, tubulis 

 subelongatis, confertis, hie illic dichotomic; disco parvo, 

 perforationibus panels, valde irregularibus. 



The tubercled Aspergillum. Shell with the valves 

 ovate, partially covered by a bifurcated hood of the 

 sheath ; sheath attenuated, slightly curved, aggluti- 

 nating sand and small pebbles ; frill regularly slop- 

 ing, contracted, tubes elongated, close-set, here and 

 there forked ; disc small, perforations few, very irre- 

 gular. 



Chenu, Mus. Conch. Asp. p. 3. pi. 2. f. 3, 3 a, b, c, d. 

 Aspergillum ornatum, Chenu. 

 Argtene tuberculata, Gray. 



Hab. Moluccas. 



The valves of this species appear to me broader than 

 those of the two preceding species, and the frill more slo- 

 pingly contracted, but the alleged distinction is far from 

 satisfactory. 



Species 17. (Mus. Cuming.) 



Aspergillum Nov/E-Zelandi,e. Asp. testa valvis ova- 

 tis, postice angulato-expansis ; vagina nidi, irregulari, 

 subcgliudraced, iuj'erue contractu; fimbria indistinctd, 

 bi-lriserialim tubulosd, tubulis brecibus, amplis, liberis; 

 disco convexo, perforationibus perpaucis. 



The New Zealand Aspergillum. Shell with the 

 valves ovate, posteriorly angularly expanded ; sheath 

 rude, irregular, somewhat cylindrical ; frill indis- 

 tinct, with two to three rows of tubes, which are 

 short, large, free ; disc convex, with the perforations 

 very few. 



Lamarck, Anim. sans vert. v. 6. p. 21. 



Hab. New Zealand. 



A shell of curiously irregular growth, in which the frill 

 is a convex or contracted branch of well-defined short 

 tubes of rather wide diameter, sometimes distorted in a 

 rather grotesque manner by the circumstance of its habi- 

 tation. 



June, 1860. 



