Barnacles of the Genus Scalpellnra. 



119 



upper and iiiframedian latera, and one meeting the carinal 

 angle of the inframcdian latus ; to each of these points a 

 strong curved ridge runs from the umbo. 



Peduncle about as long as or shorter than capitulum, with 

 large transverse plates, not overlapping, widely spaced in 

 holotype, more closely set in paratype, in five longitudinal 

 rows of ] 1 to 15 plates. 



Mandible (fig. 6, C) with four teeth, the middle interspace 

 the shortest. Maxillula (fig. 6, D) with oral edge sinuous, 

 with a large spine at its proximal third and another at its 



Fi* 7. 



Scalpellum juddi, holotype. 

 A. Segment of exopod of sixth cirrus. B. First cirrus (setae omitted). 



distal end. Cirri pale purplish. First cirrus (fig. 7, B) with 

 exopod much expanded, of 12 segments, endopod of 16. 

 Sixth cirrus with about 38 segments in exopod, five pairs of 

 long spines with shorter setre between on middle segments 

 (fig. 7, A). Caudal appendages (fig. 6, A, B) equal to peduncle 

 of sixth cirrus, of six segments (holotype), or a little longer 

 than peduncle, of eight segments (paratype). Penis absent. 

 Male. In the paratype about fifteen males and larvae were 

 attached inside the margin of the scutum on one side and 

 three or four on the other. The males are saccular or flask- 

 shaped, with a very short neck, and the outer surface is 



