238 



DISCOVERY REPORTS 



Rostrum triangular, rather small, with the umbo at the apex, not overlapped by the 

 rostral latera. 



Rostral latus quadrangular, wide rather than high, with the umbo at the upper rostral 

 corner. 



Inframedian latus triangular, with the umbo at the apex. 



Carinal latus quadrangular with the umbo also at the apex. Upper margin hollowed 

 out; carinal margin convex. 



Peduncle shorter than the capitulum, with transversely elongated scales separated by 

 chitinous interspaces. The cuticle with many hairs. 



Fig. 6. Scalpellum magnae-carinae. a. Palpus, b. Mandible, c. Maxilla I. d. Maxilla II. 

 e. Cirrus VI and caudal appendage of holotype. /. Cirrus VI and caudal appendage of paratype. 



Measurements in mm. 



Mouth-parts: Palpus conical, pointed and with bristles along one edge. Mandible 

 with three teeth and a pectinated inner angle. Maxilla I with straight front edge: a very 

 small, sometimes barely developed notch, can be traced on the front edge. Maxilla II 

 with bristles along the whole concave front edge. In the posterior part a small lobe with 

 bristles is differentiated. Behind this is a large maxillary lobe with the opening for the 

 maxillary gland. 



