RIIYNCHOTA. 
697 
riinthisiis. Fieber (Wien. ent. Mon. Bd. viii. pp. 213-214) divides this 
genus into two subgenera : Plintliisomus, with P. pusillus as type, and PUn~ 
thisuSj with P. hrevipennis, &c. P. hrevvpennis is described, p. 215. 
Plodomerus. . StM (Ann. Soc. Ent. Fr. v. p. 187) states that his Plocio- 
merus fceclus differs from Beosus minimus (Guer.) only in wanting the fuscous 
ring on the femora and having the membrane abbreviated. P. servillei (Guer., 
StRl)=Prtnicm hilohata (Say) ; P. vinulus (St§,l) = parvulus (Dall.) = 
P. amyoti (Guer.) ; P. hunncisfcri (Gudr.) = P. maculatus (A. & S.). 
Pachymerus distingncndus (Flor) is described by Fieber, and referred to 
Trapczonotus. L. c. p. 21G. 
New genera : — 
Engistus, Fieber, "Wien, ent. Mon. viii. p. 67, taf. 1. fig. 2. Allied to Ile- 
nestaris (Spin.) ; head transversely triangular ; eyes sessile j rostrum reaching 
the end of the metasternum, its basal joint enclosed in a deep canal. Sp. En- 
gistus brucJd, sp. n. (Mink), Fieb. 1. c. p. 68, from Pan. 
Notochilus, Fieber, 1. c. p. 68, taf. 1. fig. 3. Allied to Scolopostethus (Fieb.) ; 
anterior margin of pronotum thickened; basal joint of rostrum much shorter 
than head; basal joint of antcnnoo as long as the others; anterior femora , 
strong, compressed, with a strong tooth in the middle, a row of small ones 
between this and the npex, and a large oblique tooth near the latter beneath. 
Type Paclnjmerus ftrrugineus (Muls.). 
Diomphalus, Fieber, 1. c. p. 70, taf. 1. fig. 4. Allied to Ilyalochilus (Fieb.) ; 
pronotum elongate-trapezoidal, with the sides waved and three keels on the 
surface ; scutellum with a Y-shaped keel ; antennae short, second joint 
longest; eyes prominent, separated from the anterior angles of the prothorax ; 
elytra without membrane ; anterior femora toothed beneath. Sp. D. hispi- 
didus, sp. n., Fieb. p. 71, from Sarepta. 
Chilacis, Fieber, I, c. p. 72, taf. 1. fig. 6. Allied to Holcocranum (Fieb.) ; 
rostrum reaching the end of the mesosternum, its basal joint as long as the 
head; basal joint of antennae not reaching apex of head. Sp. Heterogaster 
iyphrc (Muls.). 
Acanthomemis, Signoret, Ann. Soc. Ent. Fr. v. p. 124. Anterior tibiae 
strongly curved, finely crenulated beneath in the basal two-thirds, then di- 
lated, and with several spines or teeth, three principal ones on the outside, and 
two at the apex inside ; anterior femora much thickened, furrowed and spined 
beneath. Sp. Rhyp. pollens (Dali.), and A. hracJiiidens, sp. n.. Sign. p. 124, 
from Algeria, Syria, and south of France. 
Calypto7iotus, Dougl. & Scott, Brit. Hem. p. \l\—Rhyparochromus (Fieb.), 
the latter name being applied to Megalonotus (Fieb.). 
ITypnophilus, Dougl. & Scott, l.c. p. 208 {■= IscJmocoris, p., Fieb.). An- 
tennae with joints 3 and 4 nearly equal, shorter than 2. Sp. Rhyp. micropterus 
(Curt.) and Pachym. hemipterus (Schill.). 
Stygnocoris, Dougl. & Scott, 1. c, p. ^21^= Sty gnus (Fieb.), preoccupied in 
Arachnida. 
New species : — 
Lygmis augur, StRl, Ann. Soc. Ent. Fr. v. p. 187, from More ton Bay ; L. 
