MADEIRAN COLEOPTERA. 139 
418. Scymunus Limnichoides. 
Scymnus Limnichoides, Woll., Ins. Mad. 470, tab. x. f.3 (1854), 
Inhabits Madeira and Porto Santo, in the former of which I de- 
tected it during the summer of 1855,—at the Lombo dos Pecegueiros 
and the Ribeiro Frio. Rare. In addition to the characters given in 
the Insecta’ Maderensia, to separate it from the S. minimus, I may 
mention that it has a distinctly larger scutellum than that species. 

Genus 168. RHYZOBIUS. 
Stephens, J//. Brit. Ent. iv. 896 (1831). 
419, Rhyzobius litura. 
Nitidula litura, Fub., Mant. Ins. i. 52 (1787). 
Rhyzobius litura, Steph., Ill. Brit. Ent. iv. 396 (1881). 
Rhizobius litura, Muls., Séeuripalp. de France, 262 (1846). 
Rhyzobius litura, Woll., Ins. Mad. 472 (1854). 
Inhabits Madeira, Porto Santo, and the Dezerta Grande, occurring 
beneath stones and at the roots of grass at intermediate elevations. 
420. Rhyzobius oculatissimus, n. sp. 
R. niger antice et postice rufo-testaceus, pubescens et ubique densis- 
sime punctulatus, oculis e lentibus plurimis multo minutioribus 
[quam in 2. liturd| compositis, scutello majore, elytris punctis 
majoribus superadditis in seriebus obsoletissimis suturam versus 
longitudinaliter dispositis, palpis, antennis pedibusque rufo-testa- 
cels. 
Long. corp. lin. 14. 
R. of the same form as the R. litura, but a little smaller, and rounder 
(or less acuminated) behind ; also somewhat less convex, and very 
much more densely and minutely punctulated all over; black, 
with the head, the anterior and lateral edges of the prothorax, 
and the apical region of the elytra, rufo-testaceous ; pubescent ; 
and slightly shining. Head and prothorax more closely and finely 
punctured than the elytra: the former with the eyes very differ- 
ently constructed from those of the A. litura, beg composed (like 
the eyes of most insects) of an innumerable number of very minute 
facets (instead of only a few, coarse, and convex ones, as in that 
insect): the latter a little more emarginated in front than in the 
R. litura. Scutellum rather larger, and more strictly escutcheon- 
shaped, than in the common species ; also more highly polished, 
and free (even beneath the microscope) from sculpture. Elytra 
more coarsely punctured than the rest of the surface, and (like the 
prothorax) much more densely so than in the R. litura ; the punc- 
tures moreover being composed of a double series, large and small, 
