^ Mr. G. R. Waterhouse on Coleopterous Insects 



divisions of tlie great Feronian group ; possessing the essential 

 characters of Feronia, they have the general form and aspect of 

 the species of Calathus : so like indeed is one of the species to 

 Calathus cistelloides, that I could scarcely doubt its belonging to 

 the same genus, and was somewhat surprised to find the claws of 

 the tarsi destitute of the usual denticulations. The dilated tarsi 

 of the males have the joints triangular, as in Feronia. 



Family Harpalid^. 

 Selenophorus (?) galapagoensis. Sel. piceus, marginibus thoracis ely- 

 trorumque rufescentibus ; antennis, palpis, pedibusqiie ferrugineis ; 

 thorace transverso-quadrato, postice paululum angustiore, angulis 

 posticis obtusis, foveis duabus postice obsolete impresso ; elytris 

 striatis, striis 2^ 5^ et 7" punctis remotis, indistinctis, impressis ; 

 interstitiis Isevibus. — Long. corp. 4|- lin. ; lat. 1| lin. 

 But one specimen of this species was brought home by Mr. 

 Darwin, and that being a female, I cannot feel certain that it be- 

 longs to the genus Selenophorus ; it agrees in general aspect with 

 the species of that genus, and in having no tooth in the emargi- 

 nation of the mentum. 



Amblygnathus (?) ohscuricornis. Ambl. niger subobscurus ; antennis 

 fuscis, articulis basalibus nigris apicibus piceis, palpis rufescentibus, 

 tarsis piceo-rufis ; thorace transverse, subquadrato, postice paulo 

 angustiore, supra convex o, angulis posticis rotundatis ; elytris 

 subparallelis, convexis, striatis, striis 2^, 5^ et 7^ punctis remotis 

 obsolete impressis, interstitiis convexis. — Long. corp. 4f lin. 



This insect like the last is a female, there being but one spe- 

 cimen in Mr. Darwin's collection ; it is almost destitute of any 

 gloss, and has a slight silky appearance. In general aspect it 

 greatly resembles a Cratognathus, having the same convex form 

 of body; the mandibles however are obtuse at the apex, the 

 labrum much less narrow in the antero-posterior direction, the 

 head smaller, and the anterior tibiae less dilated. Both in this 

 and the preceding insect there are three or four short spines on 

 the outer side of the anterior tibiae. 



The thorax has the ordinary two impressions behind, but they 

 are extremely indistinct : the elytra are distinctly striated ; and 

 the strise are impunctate, if we except the second, fifth and seventh 

 from the suture, in each of which are a few punctures which are 

 widely separated and by no means distinct : at the apex of the 

 elytron, near the outer margin, is a series of five or six tolerably 

 distinct and large punctures ; the interspaces between the strise 

 are rather strongly convex on the hinder part of the elytra, and 

 but slightly convex on the anterior part. 



I am not acquainted with Dejean's genus Amblygnathus, ex- 

 cept through his description, and with that the present insect 



