340 RILYNCHOPHORA. [ Poophagus. 
catalogue published in 1871, but in the catalogue of Heyden, Reitter 
and Weise five species are referred to it, so that it is probably more ex- 
tensive than is at present known; in appearance they differ from 
Ceuthorrhyncus in being more elongate and less thick set; the elytra 
are not strongly cut back at the shoulders nor are they warty at apex; 
the thorax has no tubercles and is scarcely constricted at apex ; the 
femora are rather slender and the claws are simple. 
1. Prevailing colour grey; antenne and tarsi black ; femora 
without tooth. i. o)0 2 obese. CSC) Viale hoe. 1BessisyMBRieeee 
2. Prevailing colour greenish ; antenne and tarsi reddish tes- 
taceous ; femora with a small but distinct tooth . . . . P.NasTuRti, Germ. 
P. sisymbrii, F. Oblong, rather depressed, black, clothed on both 
upper and under surface with thick white scales ; rostrum long and 
slender ; thorax at least as long as broad, constricted before apex, with 
two dark longitudinal bands about middle; elytra long, with punctured 
striz, with the shoulders, an oblique spot about middle and another be- 
fore apex, denuded and black; these spots are usually more or less 
confluent and are very variable in size according to the freshness of the 
specimens; legs long, black clothed with white scales, femora not 
toothed. L. 25-35 mm. 
Male with the last ventral segment of abdomen slightly impressed and 
the antenne inserted a little before middle of rostrum. 
Female with the abdomen even and the antenne inserted in the 
middle of rostrum. 
Marshy places; on Nasturtium amphibium; not uncommon and generally dis- 
tributed throughout England and Wales; Scotland, local, Solway, Tweed and Forth 
districts; Ireland, Waterford, Galway, Armagh and probably general. ; 
P. nasturtii, Germ. (olivaceus, Gyll.). Broader than the preceding, 
greenish-bronze, thickly clothed with greenish-grey scales on both the 
upper and under side; rostrum long, black, with extreme apex red, 
antennz red with club darker; thorax gradually narrowed in front, 
scarcely constricted before apex, closely punctured ; elytra with rather 
fine punctured striz, interstices rather broad, closely punctured ; femora 
dark, clothed with greenish-grey scales, tibiz in part reddish, tarsi red ; 
in some specimens there are traces of denuded spots and fascie on elytra. 
L. 23-385 mm. 
In ditches, &c.; on Nasturtium officinale ; both this and the preceding species 
are usually found beneath the surface of the water; rare, but sometimes found in 
considerable numbers, where it occurs; Hythe (Tylden) ; Exminster marshes, Devon, 
rare (Parfitt) ; Rudham, Norfolk, fairly common (T. Wood) ; Hunstanton, Norfolk, 
stream on the road to Heacham (W.G. Blatch and myself) ; Uphill, Weston-super- 
Mare (Crotch) ; Notts and Yorkshire (Stephens). 
CEUTHORRHYNCHUS, Duval. 
This genus is by far the most important in point of numbers of all 
