INSECTA MADERENSIA. 549 



or shallow fovea, posteriorly. Ahdumen sliining, and sparingly punctured. Antmnce and legs 

 elongated ; the former slender, and diluted at their base ; the latter pale dOuted-testaceous, 



The largest of the Macleiran SomalotcB, and readily kuown by its flattened body, 

 by its opake and granulated upper surface (there being no appearance whatsoever, 

 except on the abdomen, of punctures intermixed), and by its elongated antennse and 

 legs, — the former of which are scarcely at all thickened at their extremity. It is 

 subaquatic in its habits and apparently peculiar to very lofty altitudes, — the only 

 specimen which I have seen having been captured, in company with Xenomma 

 planifrons, fi'om beneath moist leaves at the edges of a small stream in the 

 elevated sylvan district of the Cruzinhas (about 5000 feet above the sea), during 

 my encam]iment there in July 1850. 



417. Homalota obUquepunctata, Woll. 



H. linearis nigra subtilissime punetulata nitida depressa, prothorace postice angustato et obsolete 

 canaliculate, elytris fuscescentibus, singulo foveolis duabus vel tribus in serie obliqu^ positis 

 impresso, antennis pedibusque longiusculis, illis basi dilutioribus, his testaceis. 



Long. Corp. lin. l^-lf. 



Habitat Maderam, inter lapillos per margines rivulorum, hinc inde sat vulgaris. 



H. linear, black, most delicately but not very closely punctulated, shining, and depressed. Prothorax 

 rather shorter and convexer than in the last species (but, likewise, slightly narrowed behind) ; 

 and with an exceedingly obscure dorsal channel, more particularly apparent posteriorly. Elytra 

 more or less fuseescent, or brownish-piceous, especially towards the suture ; each with two or 

 three shallow rounded impressions, placed obliquely, on its hinder disk. Antenna and legs elon- 

 gated ; the former more thickened at the extremity (and with the subapical joints more trans- 

 verse) than in the H. granulosa, diluted at their base ; the latter testaceous. 



Also a very distinct species, — differing from the rest in the two or three impressed 

 points, or rounded fovese, which are placed obliquely across the hinder disk of each 

 of its elytra. Like the last, it is subaqviatic in its habits ; and it may be further 

 known from that insect by its more shining sui-face, Avhich is most delicately punc- 

 tulated tlu-oughout (there being scarcely any indications of granules, except under 

 the highest microscopic powers), by its more or less fuseescent (or brownish- 

 piceous) elytra, and by its apically-robuster antennae. It occurs in most parts of 

 the island, from about 500 to 3000 feet above the sea, — beneath stones and 

 shingle along the margins of the streams, amongst which it secretes itself at the 

 water's edge. In the Ribeiro de Santa Luzia (in the south), and at Sao Vincente 

 and Santa Anna (in the north), I have captm-ed it in tolerable abundance. 



418. Homalota luticola, Woll. 

 H. linearis nigra (vel fusco-nigra) subtilissime granulato-punctulata subopaca subdepressa, capite 



