212  -YEMIPTERA-HETEROPTERA. 
scutellum, and the other near base of membrane (the first of these transverse fascie, however, is in many 
specimens practically obsolete), and a broad black apical margin. Membrane pale fuscous hyaline, the 
basal half fuscous, with the basal margins pale, the apical half more or less streaked with fuscous. Femora 
pale castaneous, with their bases more or less ochraceous ; tibis dull deep ochraceous; tarsi ochraceous, 
with their apices fuscous. Body beneath with the head and sternum piceous, the abdomen dull deep 
castaneous; intermediate and posterior coxe, dull ochraceous. 
Long. 6-7 millim. 
Hab. Guatemata, Tamahu, Senahu (Champion). 
The variability of this species is of the most extraordinary character, as it affects such 
a good structural character as the length of the neck. This is most inconstant in the 
specimens now before me, extreme forms of which are here figured, but between them 
all intermediate varieties exist. When we reflect that this character has been greatly 
used in differentiating species of Myodocha (doubts as to the value of which were 
expressed, anté, p. 203), the opinion becomes stronger that not infrequently in the 
Heteroptera a multiplicity of specimens is in an inverse ratio to a plethora of species. 
The anterior lobe of the pronotum is very globose, and as broad as long. 
2. Pephysena insignis, n. sp. (Tab. XX. fig. 9.) 
Head and anterior lobe of pronotum shiny black ; antennz pale castaneous, base of the first joint white, second 
and fourth joints longest and subequal in length. Posterior lobe of pronotum pale castaneous, coarsely 
punctate, clothed with pale creamy pubescence in front. Scutellum black. Clavus black, the outer basal 
margin creamy. Corium ochraceous, with a broad transverse central fascia and a subtriangular apical 
fascia black; between these black fascie the colour is creamy and somewhat iridescent; the extreme 
apical margin is ochraceous, and the costal margin, as far as the central black fascia, pale stramineous. 
Membrane fuscous, the basal margin faintly ochraceous, and with a central longitudinal pale greenish 
line on apical half. Body beneath black, the abdomen castaneous ; posterior angles of pro- and meta- 
sternum castaneous, lateral margins of abdomen ochraceous; coxee and legs ochraceous, the posterior legs 
darkest, the bases of the fore and intermediate femora and the intermediate tibie being very pale. 
Long. 7 millim. 
Hab. Panama, Bugaba (Champion). 
The anterior lobe of the pronotum is much longer than broad, a character which, in 
addition to the colour and markings, will at once serve to distinguish this species from 
P. levis. The corium is sparingly punctate, and the anterior femora strongly spinous 
beneath. 
Division RHYPAROCHROMARIA. 
Rhyparochromaria, Stal, Ofv. Vet.-Ak. Férh. 29: 7, p. 51 (1872) ; En. Hem. iv. p. 142 (1874). 
Beosaria, Stal, Ofv. Vet.-Ak. Férh. 29: 7, p. 54 (1872) ; En. Hem. iv. pp. 142-3 (1874). 
Gonianotaria, Stal, Ofv. Vet.-Ak. Forh. 29: 7, p. 58 (1872). 
Lethearia Stal, Ofv. Vet.-Ak. Forh. 29: 7, p. 59 (1872) ; En. Hem. iv. p. 148 (1874). 
Drymaria, Stal, Ofv. Vet.-Ak. Forh. 29: 7, p. 59 (1872). 
I have felt compelled to combine the above divisions proposed by Stal, as, with every 
wish to follow that author as I have hitherto done with great advantage to my know- 
