OCYOLINUS.—PHANOLINUS. . 363 
the Venezuelan O. rugatus*, the fragmentary condition of the unique individual of 
O. amethystinus rendering it unfit for bearing much manipulation, but it appears to 
be quite congeneric with O. rugatus. 
1. Ocyolinus amethystinus. (Tab. IX. fig. 6.) 
Niger; capite, thorace elytrisque violaceis, nitidis, antennis dimidio externo albido; thorace disco quadri- 
punctato ; elytris fortius punctatis. . 
Long. 20 millim. 
Hab. Costa Rica (Van Patten). 
Antenne very slender, with the five terminal joints very pale yellow. Head with 
two large punctures on each side between the eyes, placed so as to form a transverse 
series, the vertex punctate all across, and with a very large puncture on each side 
behind the internal one of the transverse series. Thorax a good deal narrowed behind, 
with four punctures in front of the middle, two on each side, and outside each anterior 
puncture with another more indistinct. Elytra very coarsely punctate, about as long as 
the thorax. Hind body closely and finely punctate. 
The unique individual I believe to be a female. Though in a very fragmentary 
condition I have succeeded in restoring it sufficiently for representation; the mandibles 
should be rather more elongate, curvate, and slender than they are shown to be in the 
figure. 
PHANOLINUS. 
Trigonophorus, ex parte, Kraatz, Ins. Deutsch. ii. p. 541. 
Palpi omnes elongati, graciles, articulo terminali quam penultimus longiore ; mandibule mediocriter elongate ; 
ligula medio parum prominula, vix emarginata, apice tantum canaliculato. Prothorax absque membrana 
stigmatica. Tarsi anteriores in utroque sexu maxime dilatati. Abdomen absque lineis curvatis discretis 
in segmenta basalia. | 
The insects hitherto composing this genus have been, since Kraatz (op. cit.) rearranged 
the genera of Staphylinini, provisionally located in T'rigonophorus (Lrigonopselaphus of 
the Munich Catalogue of Coleoptera), while other species unknown to Kraatz have 
remained in Philonthus. The genus being abundantly distinguished from all the other 
Xanthopygina by the above characters may now be formally established with advantage. 
In addition to the species here enumerated it will comprise Philonthus pretiosus, Er., 
* Ocyolinus rugatus, n. sp. 
Niger ; capite, thorace elytrisque viridescentibus ; antennis, mandibulis palpisque rufo-fuscis ; capite thoraceque 
fortiter punctatis, grosseque transversim rugosis, absque areis levigatis; elytris crebre fortiter punctatis ; 
abdomine crebrius subtiliter punctato. 
Long. 19 millim. 
Hab. Venezuela. 
3 AA 2 
