Discovery reports (1929) Discovery reports discoveryreports21931inst Year: 1929 SCALPELLUM 24S neri and S. boiivieri are externally rather similar, but differences are to be found in the carino-laterals and the inframedian laterals. The finer structure of the plates which I Fig. 9. Scalpelhitn convexum. a. Pupa with primordial valves and upper latus (total length 0-94 mm.). b,c, d. Young specimens (total lengths 1-50, 1-91, and 4-35 mm. respectively), e. Carina, inframedian latus and rostral latus of a young specimen (total length 5-62 mm.). /. Full-grown specimen, lateral view (total len
Discovery reports (1929) Discovery reports discoveryreports21931inst Year: 1929 SCALPELLUM 24S neri and S. boiivieri are externally rather similar, but differences are to be found in the carino-laterals and the inframedian laterals. The finer structure of the plates which I Fig. 9. Scalpelhitn convexum. a. Pupa with primordial valves and upper latus (total length 0-94 mm.). b,c, d. Young specimens (total lengths 1-50, 1-91, and 4-35 mm. respectively), e. Carina, inframedian latus and rostral latus of a young specimen (total length 5-62 mm.). /. Full-grown specimen, lateral view (total length 15 mm.), g. Carina and carinal latera. li. The same specimen, rostral view. have determined by studying the types makes the differences greater than it is possible to see from figures only. S. weltneri has a very hairy cuticle and S. bouvieri a cuticle without hairs. They are thus all found to be good species.
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