354 ME. a. LEWIS ojs Japanese LA^rauEiiDiE. 



forgetting tlie wliile that like causes produce like effects, and 

 cannot in tliis material world of ours act otherwise. 



The process I have spoken of as checking variation appears 

 to me to be akin to that enunciated by Spencer as " organic 

 polarity" in his Chapter on " Waste and Repair;" and it is to 

 this process I also think can be traced the manifestations which 

 are usually regarded as phenomena of heredity. For if we say a 

 certain family of plants (Begoniacese) possesses a certain polarity, 

 we caunot refuse to admit that each species within that family 

 has its own peculiar polarity. A step further leads us to say 

 that each individual of a species has its individual polarity ; and 

 it is these individual distinctions or peculiarities, which we observe 

 in organisms of the closest afEinity, that are called phenomena of 

 heredity. I think it would be as wrong to say that " organic 

 polarity " was inherited as it would be to say that alum in water 

 inherited a form of crystallization. 



The new species are, as I have said, five in number ; but I 

 have added some remarks on others, in the order of the list, 

 which the observation of external sexual characters renders 

 necessary. 



DOUBLEDATA, White, 

 is a genus allied to GalUlanguria, Crotch, and possesses some of 

 its characters. Antennae about as long as the head and thorax ; 

 joints 1-7 nearly equal, 8-10 dilated, 11 subovate; eyes mode- 

 rate, granulate, and rather prominent; thorax rather convex 

 above, longitudinally impressed, immarginate in front ; elytra 

 parallel at sides, truncate at the apex, twice and a third longer 

 than the head and thorax, with the apical fold padded beneath 

 with a short whitish pubescence. 



The followiug sexual characters were not noticed by White or 

 Crotch : — 



Male. Head wide, robust at the neck ; cheeks angulated and 

 swollen to receive mandibles ; left side much larger than right. 

 The growth of the head affects the position of the antennae and 

 the eyes, and forms a frontal disk for them ; eyes smaller than in 

 the female. Thorax subquadrate, rather broader than long ; 

 basal angles acute. Legs elongate and simple ; anterior tarsi 

 very amply dilated, posterior tarsi much less so, middle tarsi 

 intermediate between the other two. 



Female. Head moderate, not distorted neck narrowed, being 



