102 
Mr. A. H. Haliday on Blaps Mortisaga. 
Obs. — This description was drawn up from a comparison of 
two specimens, one dry, the other in spirits. The parts of the 
mouth were examined in situ only. 
Plate XI. fig. 1. Larva of Blaps mortisaga, the upper side. 
1 a. Last segment of ditto, upper side. 
1 b. Last two segments in profile. 
1 c. Head of ditto, upper side. 
1 1 1 . Ditto, under side. 
1 e. Maxillas and labium of ditto, as seen in situ. 
1 f . Antenna of ditto. 
1 g. Foreleg of ditto. 
XVIII. Some Account of the Genus Myocoris, of the Family 
Reduvini. By Dr. Hermann Burmeister, Fellow of 
the Naturalist Society of Berlin, For. M. E. S., Spc. 
( Communicated by J. O. Westwood.) 
[Read February 1, 1836.] 
In the second volume of my Manual of Entomology ( Hctndbuch 
der Entomologie ) I have given the arrangement of the great group 
of Land-Bugs {Geocores), which is considered in England to form 
with the Water-Bugs ( Hydrocores ) a separate order, under the 
name of Heteroptera. I have divided the whole group of land- 
bugs into eight families, of which the Reduvini are the third. All 
the very numerous and different forms, introduced into this 
family, I have distributed into thirty genera, the characters of which 
are exhibited chiefly in the legs, principally in the unguiculi and 
the tibice. 1 have shown (page 219 and 221), that the unguiculi 
have two forms, namely, they are, 1st, short, compressed, and 
furnished with a large tooth on the base of the under-side ; or, 
2ndly, elongated, round, bowed, and at the same place furnished 
with a fine bristle, which is nearly as long as the whole unguiculus. 
This second group must be divided into three sections from the 
construction of the extremity of the tibice. The first section (a) 
has a pit on the fore side of the tibia, in which the tarsus may be 
concealed ; the second ( b ) has a large or long and narrow sole 
on the under-side of the four anterior tibice ; the third (c) has 
neither the one nor the other of these structures. Our genus 
Myocoris belongs to the first group with the large unguiculi. 
