2 MADEIRAN COLEOPTERA. 
rate it appears safer, in the absence of further and more satisfactory 
evidence, to act upon that hypothesis. Thus, the Madeiran insect is 
slightly shorter and less flattened than its European ally ; its head 
and prothorax (the latter of which is more transverse, and has its 
posterior angles less prominent) are darker, and the sculpture of its 
elytra is altogether different,—their entire surface being minutely 
and densely alutaceous (and therefore less shining), and with the 
strie and intermediate punctures much more lightly impressed. The 
basal rim of the elytra, also, is less thickened ; and the sutural stria 
is more bent outwards near the scutellum,—causing the circular 
indentation in which it terminates to be further removed from the 
suture, 
2. Tarus suturalis. 
Cymindis suturalis, Dej., Spec. des Col. i. 206 (1825). 
Tarus suturalis, Woll., Ins. Mad. 3 (1854). 
Inhabits, in great profusion, the sandy plains and low rocky decli- 
vities of Porto Santo; it has also been detected by Mr. Leacock 
(and subsequently by Mr. Bewicke) on the Ponta Sio Lourenco of 
Madeira proper; and I have captured it on the extreme summit of 
the Dezerta Grande. It occurs, likewise, in the Canary Islands. 
The specimens from the Madeiran Group have their elytra a little 
more lightly sculptured than those from Egypt,—of which I possess 
a series which was collected at Alexandria by Dr. Schaum. 
Genus 2. DROMIUS. 
Bonelli, Observat. Ent. i. tab. synopt. (1813). 
§ I. Unguicul intus serrati. (Dromii typier.) 
3. Dromius insularis. 
Dromius insularis, Woll., Ins. Mad. 4 (1854). 
Inhabits Madeira and the two northern Dezertas, occurring in the 
moist sylvan districts of the former, and in grassy places of the 
latter. Rare. 
4. Dromius alutaceus, n. sp. 
D. lineari-oblongus alutaceus subopacus, capite prothoraceque rufo- 
piceis, elytris fusco-piceis parallelis depressis, singulo plaga 
magna elongaté indeterminata pallida ornato, antennis pedibusque 
pallidis. 
. 1 3. 
Long. corp. lin. 23, 
D. linear-oblong, depressed, and sub-opake,—being alutaceous (or 
