390 Dr. N. Annandale on the 



Museum, for many valuable suggestions. As regards taxo- 

 nomic order, I have t'ollowed Gruvers ' ]\lonograi)liie des 

 Cirrhipedcs' (Paris, 1905) as far as possible. The Ibrms 

 here deseribed will l)e figured iu the next volume of the 

 "Illustrations of the Zoology of the 'Investigator'"'' (19()G). 

 The speeiiueus are, almost without exception, iu an excellent 

 state of preservation. 



Genus Scalpellum. 



(a) Forms with imjier/ectli/ calcified valves. 



Scalpellum Gruvelii, sp. n. 



Capitidum irregularly ovoid, laterally compressed, with 13 

 plates, which arc widely separated one from the other, 

 deeply embedded in and partially coneoaled by a tiiick, 

 feebly translucent, externally smooth and hairless membrane. 

 Carina more or less distinctly bent at an angle, with umbo 

 on a tooth v^hicli projects upAvards through the membrane 

 some distance from the distal extremity of the plate; the 

 latter separated from the terga ; the praumbinal portion 

 expanded distally, flattened or feebly convex upwards, 

 variable in extent; subumbinal portion nearly straight or 

 bowed in a very wide arc, with its dorsal surface concave, 

 with ill- defined borders, decreasing considerably from below 

 upwards, its base overlapped by the cariual latera, its sides 

 "\\ ith a dorsal ridge. Terya ^ -shaped, the shorter limb over- 

 lap])ed at its distal extremity by the apex of the scuta, the 

 laiger directed towards the carina, the apex slightly retro- 

 verted towards and above the carina. Scuta subtriangular, 

 with a sharp tooth near the upper extremity of the lateral 

 margin ; below this point the margin is boldly excavated. 

 Upper lotus with perfectly calcified portion pentagonal, sub- 

 triangular, sharply pointed at the apex, which is directed 

 towards the notch below the scutal tooth; the base feebly 

 angular. Rostral latus sausage-shaped, its main axis forming 

 an angle with the basal margin of the scutum, its median 

 extremity close to the latero-basal angle of that plate. Infra- 

 median latus an isosceles triangle with its base parallel to 

 the base of the eapitulum ; a clul)-sliaped ridge Avith its 

 expanded extremity uppermost projects outwards through 

 the membrane almost to the external surface, the remainder 

 of the plate being deeply buried. Carinal latus triangular, 

 with apex at fiee extremity, which projects backwards for 

 some distance behind the carina; upper margin slightly 



