8 THE ENTOMOLOGIST. 



Silpha atrata, Linn., and venatoria, Harold, feed on snails ; 

 the former occurred at Hakodate, accompanied with Cychrus 

 convexus, and eating Helix pauper, Gould. Dr. L. Von Heyden 

 considers S. sex-carinata, Motsch., described from the Amur, to 

 be a variet}' of S. i-punctata, Linn. ; and there is certainly nothing 

 in Motschulsky's description to lead to an opposite opinion. 



1. Silpha japonica, Motsch. ; Etud. Ent., 1860, p. 12. — Is 

 abundant on the coasts of all the islands, and in China. 



2. Silpha hrunnicollis, Kraatz ; Deutsche Ent. Zeit., xxi., 

 1877, p. 106. — This species does not appear to extend north of 

 Yokohama, but it is abundant in Kiushiu. All the specimens I 

 found at Yokohama have the disc of the thorax black. It is 

 found in Formosa and China. 



3. Silpha venatoria, Harold; Deutsche Ent. Zeit., xxi., 1877, 

 p. 346. — Seven examples were found at Subashiri near Fujisan, 

 in May ; and I bred it in September from pupse found in rotten 

 birches at Hakodate. Some specimens were also found in Sado. 



4. Silpha perforata, Gebler ; Nouv. Mem. Mosc, 1832, p. 49. 

 — This Eurasian species is common in Yezo. 



5. Silpha siLVATiCA, n. sp.— Oblongo-ovata nigra; thorace la- 

 teribus testaceis ; elytris testaceis 4-nigro punctatis. L. 16-17 mill. 



This species in general coloration agrees with S. i-punctata, 

 but it is one-third larger, and the elytral carinas are longer and 

 much more distinct. In S. -i-pimctata the posterior black spot 

 does not reach beyond the third carina ; in silvatica the spot is 

 more transverse and much larger, and one-third of its area is 

 outside the third carina. In some specimens the dividing portion 

 of the carina is yellow, and in others black. The head in the 

 region of the eyes is one-third wider than in the Linnean species, 

 and the prosternum is more finely acuminate posteriorly. One 

 specimen was taken at Chiuzenji, and twelve others beaten off 

 oaks at Junsai and Sapporo. 



6. Silpha sinuata. Fab. ; Syst. Ent., p. 75. — Von Harold has 

 identified this species as occurring in Japan, and says the speci- 

 mens (Deutsche Ent. Zeit., xxi., p. 346) are much larger than 

 European examples. Some I possess are double the size, but I 

 do not think they are specifically distinct. The form or species 

 is very abundant everywhere, especially on the sandy coasts. 



