118 



Dr. W. T. Caiman on 



of rostrum. Inframedian latus small, triangular, set obliquely 

 with the apex near the surface and the base deeply embedded. 

 Carinal latus also set obliquely, much broader than high, 

 with umbo in line with upper margin, recurved and slightly 

 projecting laterally but hardly posteriorly, not meeting its 

 fellow below the carina (fig. 5, D). The outline of the carinal 



Fig. 6. 



Scalpellum juddi, holotype. 



A. Exopod of sixth cirrus and caudal appendage (seta? omitted). 

 B. Caudal appendage. C. Mandible. D. Maxillula. 



latus as defined by grooves on the external surface differs 

 widely from that of the calcareous valve just described, 

 extending well above the umbo, having three points or 

 angles, one between carina and upper latus, one between 



