Agriotes. | SERRICORNIA. 107 
I. Form broader; thorax with posterior angles not or only 
obscurely lighter than the rest of the upper surface. 
i. Posterior coxe slightly dilated internally ; punctuation 
of interstices of elytra feebler. 
1. Elytra unicolorous. 
A. Size smaller; thorax longer; antenne shorter and 
more slender . . A. SPUTATOR, DL. 
B. Size larger; thorax ‘shorter ; antenne longer and 
stouter . . A. opscurus, DL. 
2. Elytra with the interstices “alternately lighter and 
darkers ets A. LINEATUS, L. 
. Posterior cox rather " strongly dilated internally ; 
Tape surface unicolorous, almost black; er 
of interstices of elytra stronger . . A. sorpipus, Ill. 
IJ. Form narrow and slender ; thorax with posterior ‘angles 
yellowish-red ; elytra light brown with suture blackish, 
sometimes unicolorous. 
i, Size larger; punctuation of thorax finer and more 
diffuse; posterior angles of thorax ridged . . . . . A. SOBRINUS, Kies. 
ii. Size smaller; punctuation of thorax coarser and 
closer; posterior angles of thorax not ridged. . . . A. PALLIDULUS, J/l. 
A. sputator, L. (rufulus, Lac.; graminicola, Redt.). Oblong, 
convex, fuscous black or dark brown, sometimes castaneous, rather 
thickly clothed with greyish pubescence; head thickly punctured, 
antennz entirely yellow or brownish-yellow, second joint considerably 
longer than third, and longer than fourth; thorax longer than broad, 
convex, thickly and distinctly punctured, posterior angles considerably 
produced, rather sharp, plainly keeled ; scutellum large, situated in a 
deep basal depression of elytra; elytra with sides very slightly rounded, 
and very gradually contracted towards apex, broadest in middle, deeply 
but finely striated, interstices flat, finely punctured and transversely 
rugose ; legs brownish-yellow with femora often darker. L. 5-6 mm. 
Under stones ; at roots of grass ; in moss, flood refuse, &c. ; common and generally 
distributed throughout the south of England and the Midland districts; not so 
common further north; Scotland, rare, Solway and Tweed districts. 
A. obscurus, L. (variahilis, F.). Larger, more convex and _ less 
parallel-sided than the preceding, with the thorax shorter and duller and 
more thickly and strongly punctured; colour fuscous, or brown, 
unicolorous, or with the thorax dark and the elytra lighter or darker 
brown ; antennz longer and stouter than in A. sputator; thorax very 
strongly and thickly punctured, subtransverse, posterior angles sharp, 
moderately or indistinctly keeled ; elytra with sides rounded, dilated 
about middle, and rather strongly narrowed at apex, with fine punctured 
strie, and broad and flat finely punctured and transversely rugose 
interstices ; under-side dark brown or black ; legs brownish-yellow or 
reddish with femora darker, L. 8-9 mm. 
Under stones; in moss, &c.; generally distributed and common throughout the 
kingdom. 
