THE CANADIAN ENTOMOLOGIST 347 



Var. mephisto Thomson. Fovea of thorax and elytra 

 golden; Beneath golden green, shining; elytra castaneous. 



Habitat: White Nile; Senegal; Benue; Niger. 



Var. vandykei subsp. nov. The form, size, and punctuation 

 are as in S. interrupta Olivier but the colouring is radically different 

 from that of other varieties. Head and thorax the same as inter- 

 rupta. Differs by having all the elytral impressions filled with 

 red pilosity including the one below the humeral umbone; also by 

 having a row of semi-triangular red spots on each side of the ab- 

 dominal segments, those on the fourth and fifth segments largest, 

 that on fifth running from top to bottom and from margin inwards 

 from each side for 1/3 the width of the segment; segment 4 also, has 

 2 extremely small more rounded spots in centre, not spaced evenly; 

 the pilosity being otherwise normal and white. This variety is 

 remarkable in that both red and white pilosity is present and the 

 hairs of each colour are equally dense on the ventral surface of the 

 abdomen. Length: 36 mm. Width: 141^ mm. Habitat: Bafulabe 

 (Senegal). One specimen. Type in my collection. 



Taken by W. F. Blakeslee. The specimen was sent to me 

 loose and as a result it has lost 2 3/5 tarsi and 1 joint of an antenna. 

 I take great pleasure in naming this after my friend and former 

 teacher, Dr. Edwin C. Van Dyke of Berkeley, California. 



Var. immaculata Kerremans. Impressions of elytra absent. 



Stevensii and its one good variety may be separated as follows : 



A. Thorax black; elytra castaneous 5. stevensii Waterhouse. 



AA. Thorax brassy; elytra very dark brown, with blue reflec- 

 tions var. waterhousei, subsp. nov. 



S. stevensii Waterhouse. For description of this and its 

 variety I will quote Mr. Waterhouse in toto. '''Resembles and is 

 closely allied with S.- interrupta, but it differs in the sculpture and 

 ornamentation of the abdomen. Head and thorax black, with 

 numerous moderately strong punctures and a median impressed 

 line, all filled with whitish pubescence, as in interrupta. Each 

 elytron with a small dirty white spot near the scutellum, an elongate 

 spot in the middle of the base, a longer one below the shoulder, 

 and a line behind the middle (near the side). Body beneath dark 

 aeneous. Abdomen marked with punctures, each puncture 

 bearing an obscurely brassy hair. These punctures are placed in 



