1925 ] Mystery of “ Trilobite Larvce” Definitely Solved 137 
Measurements: Total length 75-80 mm. Greatest width of 
metathorax 25-30 min. 
The Systematic Position of the Genus Duliticola. 
From what has been said above the genus Duliticola pos- 
sesses all the essential characters of the family Lycidae and 
should therefore be placed there. 
When still in Borneo I tried hard to identify the first known 
male of the well-known “trilobite-larvae”. Owing to lack of 
access to literature I could not settle the question locally. I 
therefore sent a specimen to the well-known entomologist Mr. 
C. F. Gahan of the British Museum asking him for his opinion, 
Mr. Gahan informed me that he considered the beetle to be a 
Lycid and belonging to a genus related to or perhaps identical 
with Dihammatus. 
Later on I sent also a specimen to the well-known German 
entomologist and Lycid specialist, Mr. R. Kleine of Stettin, who 
declared that no Lycid of any similar type was known to him 
and that he thought the beetle to be a Drilid. 
Before leaving Borneo I was kindly offered an opportunity 
by Professor W. M. Wheeler to come to America and to take up 
some research work at the Bussey Institution. I gladly accepted 
his invitation and had there an excellent opportunity to go into 
the question in detail myself. 
There can in my mind hardly be any doubt that Gahan’s 
statement that the beetle is a Lycid is correct. My close exam- 
ination, however, shows that it can under no circumstances be 
placed in the genus Dihammatus. It differs distinctly in the 
shape and build of the antennae, the shape of the prothorax and 
above all in the male genital apparatus, from a specimen of 
Dihammatus abditus Kleine which Mr. Kleine has been kind 
enough to send me for comparison. 
The reasons why Kleine seems to favor a position in the 
Drilidae are partly because the middle-coxae of my beetle are not 
quite so distant as in most Lycids, and partly because normally 
developed females of all known Lycid-genera are known. 
With reference to Kleine’s first objection, I find that the 
characters “coxae contiguous” and “coxae distant” are fairly 
