10 



BULLETIN 00, UNITED STATES NATIONAL MUSEUM. 



The scutum is triangular, its basal width more than half the length. 

 The occludent margin is barely conv^ox, the tergal margin straight, 

 the apex erect. 



The tergum is long, subtriangular, narrower than the scutum.' Its 

 occludent and scutal margins are straight, carinal margin somewhat 

 convex. The apex is erect. 



The carina is narrow, very slightl}^ curved, with rounded roof. 



The rostrum is triangular, much broader than high, with incurved 

 apex. 



The rostral latus is obliquel}^ triangular, broader than high, with 

 incurved apex. 



The median laterals plate is triangular, about twice as wide as high. 



The carinal latus is obliquelj^ triangular, shaped like the rostral 

 latus, with an incurved apex. 



Fig. 2. — Scalpellitm eos. a, rostral; h, lateral; c, carinal views of the type-specimen. 



The subcarina is triangular, higher than wide. 



The peduncle is very large, subcylindric. Its lower half is clothed 

 with very small, convex, rounded, slightly separated scales, higher 

 than wide, and about 0.3 mm. long. These disappear on the upper 

 part of the peduncle, which is nude. 



The two cotypes measure as follows: 



Length of capitulum 18, width at base 14,5 mm. I^ength of the 

 peduncle 20 mm, (Fig, 2.) 



Length of capitulum 15, width at })ase 12 mm. Length of the 

 peduncle 13 mm. 



This species is related to S. villosum Leach, but not ver}' closel}^ 

 The carina is narrower, the terga erect, not recurved. The scuta are 

 higher and the rostrum is smaller. The cuticle is smooth, not downy 

 as in S. villosw/i. 



