138 
Psyche 
[June 
relative ones, different degrees of both being traceable within 
the family Lycidse. The male-specimen of Dihammatus abitus 
Kleine from Sandakan in North Borneo, treated with caustic 
potash shows the middle-coxae more nearly contiguous (less 
distant) than in the males of Duliticola paradoxa Mjob, treated 
in the same way. I therefore consider that not too great stress 
should be laid upon this character. 
It is certainly a strange fact that not a single of the many 
known Lycid-genera known up to now are characterized by 
larviform females, normally developed females of all described 
genera according to Kleine being known. 
As I find that my beetle can not be received in any of the 
known genera I have been forced to create a new one. The fact 
that no similar beetle is represented in the rich collections of the 
Sarawak Museum and in no other collections I have seen (Sin- 
gapore, Java, Manila) would certainly point to the belief that 
the male of Duliticola paradoxa Mjob. as well as of the other 
“trilobite-larvse” must be extremely hard to get. It took me 
fuily two years of more or less continuous field work to procure 
the first male and it was only thanks to the numbers of sexually 
mature females exposed and to my persistent attempts that I 
was successful in securing it. Obviously the males must live in 
such a hidden way that they do not fall in the hands of the 
chiefly diurnal entomologists and collectors. The circumstances 
that they are exclusively nocturnal and non-luminous have also 
much weight. Also the fact that the males are not attracted by 
strong light helps to explain why they have so far escaped all 
entomologists. During my long and tedious nights in the 
Bornean jungle I kept permanently two big light traps going, 
consisting of a big basin in four sections filled with water and 
measuring about a meter in diameter with a 250-candle power 
lamp (“Storm King”) hanging immediately above the water. 
Every night thousands of smaller creatures were attracted and 
caught on the water. Among the victims were several male 
lampyrids of the genera Lamprophorus, Lucernuta, and Luciola 
but not a single male of Duliticola paradoxa Mjob. 
As all observed males of Duliticola seem to die directly 
after the copulation it is probable that they fertilize only one 
