86 SERRICORNIA. [ Cryptohypnus. 
2. Upper surface bronze, legs red ; size larger; 
first joint of antennze longer than third joint C. RIPARIUs, F. 
. Thorax longer, sre rugose ; eae with 
allow markings. . - - - C. SaBULIcoLA, Bok. 
II. Thorax with the carinw of the posterior angles 
reaching beyond middle ; size smaller. 
i. Prosternum without furrow. 
1. Elytra with several variable re spots at 
base and towards apex . . C. PULCHELLUS, L. 
2. Elytra with two well-marked Jar ge yellow 
spots on each, one at base and the other before 
apex 2% C. QUADRIPUSTULATUS, F. 
. Prosternum with lateral furrow in front ; ; “elytra 
ered alate or with two small yellow spots on 
each, one at base and the other before apex . . OC. DERMESTOIDES, Herbst. 
(v. guadriguttates, Lap.) 
Cc. maritimus, Curt. (Scotus, Cand.}. Elongate and rather narrow, 
black, with a very slight, almost imperceptible, metallie reflection, 
clothed with very fine greyish pubescence ; head very closely punctured, 
antenne long and slender, first jomt shorter than third, second joint 
very short, third and fourth joints nearly equal ; thorax somewhat longer 
than broad, very closely and finely punctured with more or less distinct 
traces of a smooth central line in middle; elytra with deep stria, 
imterstices very closely punctured ; prosternal process only covering base 
of mouth parts; legs black with tarsi pitchy. b. 4-43 mm. 
On the banks of rivers and streams; very local; Lianberis; Bettws-y-coed ; 
Heysham and Lancaster district; Cumberland; Northumberland aud Durham 
district ; Scotland, Solway, Tay and Moray, and probably Clyde and Dee districts. 
C. riparius, F. Much larger and broader than any of our other 
species, ovate, convex, of a dark bronze colour, very sparingly clothed 
with yellowish pubescence; head convex, coarsely punctured, with a 
furrow or depression on vertex, antennx pitehy with base lighter, first 
joint large, second third and fourth of about equal length, the rest 
shorter and broader ; thorax very convex in middle, depressed strongly 
at base, broadest just behind middle, diffusely and finely punetured on 
dise, more thiekly at sides; seutellum large, rounded; elytra about 
twice as long as together broad, broadest in middle, with distinct 
impunetate striae, interstices flat, very finely and diffusely punctured ; 
under-side black; legs reddish-yellow with pitehy femora. . L, 5-6 mm. 
On the banks of streams, &c.; under stones and pieces of wood, also in floo:l 
refuse; common and generally distributed from the Midlands to the extreme north 
of Scotland ; not uncommon in the London district, but apparently rare in the south 
of England; Ireland, near Belfast and Dublin; co. Cork; Westport, co. Mayo; 
Teelin Bay, Donegal, &e. 
C. sabulicola, Boh. (Negastrius sabulicofa, Thoms.). Elongate, 
rather narrow, black, somewhat dull, elytra with irregular patches at 
base and before apex, and a round spot on each behind middle yellow; 
