Additions and Corrections. 363 
phylogenetic relationships. After two years’ further work, I think also th: 7 
developmental tree will not stand, as the Scutellerine series, which has, ihe pen 
a wing-hamus, can not have descended from the Cimicine series, which has either 
no hamus or else an extremely rudimentary one. The Cimicinae are a development 
of the Pentatominae, rather than the reverse, as I will show in detail in my “Intro- 
duction to the Natural History of the Hemiptera”, which is now in active preparation. 
I am not sure that I am right in isolating the Tessaratominae, some of the forms 
of which are very peculiar. I ought to add that many of the characters used now 
were discovered by Stal, but were never used by him in his tables. 
1 (16) ees or urosternite at least partly (and nearly always totally) hidden 
ura. 
2 (9) Primary and subtended veins of the lower wings straight and subparallel for 
‘at least half the length of the wing; [hamus absent, or very rudimentary; 
antennae with 4—5 segments]. (Cimicine series). 
3 (8) Primary and subtended veins of lower wing contiguous for at least half the 
length of the wing, sharply diverging just after that. 
4 (7) First segment of Labium not free, lodged for almost, or quite, its entire 
length, in a groove formed by the bucculae, which are more or less parallel 
and are not united posteriorly. 
5 (6) Labium more or less elongate, first segment extending beyond the bucculae 
ES «cai ena errran aan NS Meine fis Stabs rT! TUCO TT 
6 (5) Labium scarcely extending beyond the fore coxae, first segment not extending 
beyond the bucculae. ...-.-.+ +... - . Phylocephalinae. 
7 (4) Labium free; bucculae very small, uniting posteriorly, converging more or 
RSeeRERGLO he ee soe ac eta eae) Rak ee erse a ee  e 
8 (3) Primary and subtended veins of the lower wing more remote than in “3”, 
including a narrow area which converges a little apically . Dinidorinae. 
9 (2) Primary vein of the lower wing straight for half the length of the wing; 
subtended vein not parallel with it; [first segment of labium nearly as in 
Pentatominae]. 
10 (11) Antennae composed of 3 segments; entire body strongly explanate laterally; 
scutellum medium-sized; [tarsi 3 segmentate; hamus present]. (Phloeine 
Bea RE ee See eg lee eerie baker gai ea Oe 
11 (10) Antennae composed of 4—5 segments; body not strongly explanate laterally; 
scutellum very large (Scutellerine series). 
12 (15) Tegmina not folded; lower wings not incised deeply at the anal fold; hamus 
resent. 
13 (14) ronaty and subtended veins of the lower wings remote, inclosing a some- 
what wide area, which does not converge regularly apically; tarsi 5 segmen- 
PT Allee OM AL HISD shot tle Se ee, a ene eee: Scutellerinae. 
14 (18) Primary and subtended veins of lower wings somewhat remote, inclosing an 
elongate area, widened at the base, narrowed at the apex; tarsi 2 segmentate 
Sem em ery TT etry Gea cen cid vot oa lal tn rad wink bite SS Cyrtocorinae. 
15 (12) Tegmina folded in at base of membrane; lower wings deeply incised at the 
anal fold; hamus absent; [tarsi 2 segmentate]. . . . - Coptosominae. 
16 (1) Spiracles of the 2nd urosternite not hidden at all by the metapleura; 
[scutellum medium-sized; hamus present in some, absent in others; tarsi 
2—3 segmentate]. (Tessaratomine series) . - - , Tessaratominae. 
NB. The Aphylinae are not included here, as the wing-venation is not known. 
I do not propose to furnish a revised table of the Heteropterous families, but 
I wish to add a few words on the constitution of the Trochalopoda. This section 
forms firstly two groups, (1) that in which the metapleura are laminate posteriorly, 
and (2) that in which they are not (Nepoideae). The first group embraces two 
superfamilies as follows: 
1. Cimieoideae — with the head carinate laterally between the clypeus and 
the antennal insertion; Cimicidae, Thyreocoridae and Urolabididae. 
2. Coreoideae — with the head not carinate laterally; Aradidae, Condes, 
Pyrrhocoridae and Myodochidae. The Tingididae may form a third superfamily, 
but I reserve them for further consideration. 
