Rothsohild.—CHILEAN SIPBONAPTERA 
39 
Ceratophyllus endymionis, SPEC. NOV. 
This species is closely allied to C. alladinis, but differs in the 
following details:— 
Jíead .—The frontal tooth of the head is less distinct. The 
small hairs in front of the eye are much less nnmerous, and 
there are two or there small bristles situated near the antennal 
groove in a transver.se row in front of the three eyebristles. 
Thorax ,—The mesonotum is much more hairy on the back 
than in G. alladinis. The metanotum bears several bristles in 
front of the anterior row. There are one or two short apical 
spines. The short hairs on the mesothoracical episternum are 
rather more numcrous. 
Abdomen .—The first abdominal tergite bears three rows of 
bristles and some additional hairs on the back in front of them. 
The other tergites, except the seventh, have also a few bristles 
in front of the anterior row. The anterior rowof hairs on the 
seventh tergite is restricted to the back, consisting of five hairs 
on the two sides together. There are three bristles at the apex 
of the seventh tergite The basa! sternite of the abdomen bears 
one ventral bristle on each side and a small lateral hair. The 
seventh sternite is much less obviously sinuate. 
Le.g ».—The first hindtarsal segment bears six pairs of bristles 
on each side and a ventral row of three or four smaller bristles 
on the posterior (outer) side. The second and third segments 
bear such a ventral row on each side. The measurements of 
the mid-and hindtarsus are as follows:— 
First 
segment.* 
Second 
segment. 
Third 
segment. 
Fourth 
segment. 
Fifth 
segment. 
Midtarsus. 
24 
22 
13 
8 
18 
Hindtarsus. 
50 
32 
21 
12 
21 
Modified Segments .—The eighth tergite is much less emar- 
ginate at the apex than in C. alladinis. 
Length, 3'4 mm. 
We have two $ $ collected by Mr. J. A. Wolffsohn at Valpa¬ 
raíso, Chile, from Marmosa elegans. 
This species is also closely allied to G. californicus Baker, 
but differs from that insect in having the mesonotum much 
more hairy on the back, the metanotum of C. endymionis 
having also several additional hairs in front of the two rows. 
