328 ME. a. LEWIS ON THE 



refers to, and these may be cognate species. In A. otiosus, Say, 

 the male, however, is " distinctly carinate," the female " usually 

 with a well defined carina." I think these are individual, 

 not sexual differences. 



Chetsocheoa alteewans, WaterJi. Ann. Sf Mag. Nat. Hist. 

 1888, i. p. 264. 



Hah. Ruikiu Islands. Taken by Mr. Pryer in 1886, Type in 

 the British Museum. 



Chetsocheoa Holstii, Waterh. Ann. Sf Mag. Nat. Hist. 

 1890, V. p. 169. 



Hah. Hachijo, an island near Yokohama. Two examples in 

 the British Museum. 



Chtsodema Lewisii, Saund. 



Hah. Kiushiu and B-uikiu Islands. The original specimen 

 came from Nagasaki, and in 1886 Mr. Pryer found it on Oshima. 



DicEECA aino, sp. n. 



iEnea vel cuprea, rugosa, punctata ; capite haud canaliculato ; thorace 

 ti'ibus lineis laevibus ; elytris valide furcatis ; subtus aureo-cuprea. 

 L. 18-20 millim. 



-^Eneous or cupreous bronze. The head longitudinally rugose, 

 not canaliculate ; the thorax widest in the middle, hind angles 

 little acute, sinuous at the base, very rugose, with two longi- 

 tudinal smooth elevations in the centre having a few punctures, 

 and two lateral elevations much broken by the intervening 

 rugosities ; the scutellum rather transverse, in one specimen 

 longitudinally impressed ; the elytra obsoletely striate, very 

 rugose, interstices elevated, especially near the suture, broken 

 by punctured spaces, and near the outer edge more generally 

 interrupted by transverse rugosities, apices strongly furcate. 

 Beneath, the coloration is brighter, golden and coppery ; legs 

 concolorous ; the pro sternum has the lateral margins raised, and 

 the last ventral segment is canaliculate in the middle, apex with 

 two incisions. 



-D. ampMhia, Mars., from Siberia has the head " profoundly 

 canaliculate" in the middle. D. aino is very similar to it and to 

 I), f areata, Thunb. 



Hah. Tezo. Two examples from the Ishikari Eiver. 



Diceeca tibialis, sp. n. 



Subconvexa, capite rugoso, cupreo, inter oculos leviter impresso ; 

 thorace in medio duabus lineis laevibus; elytris obscuro-seneis prave 



