19G Dr. Sharp's Revision of tJie 



thoug-ht it better to adopt Kraatz's name of trinotata. 

 Paykvill's Staphylinus socialis, may, or m.ay not, be this 

 species, but it is certain from his description, that he 

 confounded more than one species together. 



89. Homalota hyhrida. 



Nigro-picea, elytris pedibusque testaceis, illis circa 

 scutellum angulisque apicis obscure fuscis ; antennis 

 apicem versus vix incrassatis ; thorace transverso, basi 

 obsolete impresso ; abdomine segmentis 2-4 subtiliter sat 

 crebre punctatis. Long. 1| iin. 



Mas; antennis articulo penultimo quadrato, abdomine 

 segmento 7° dorsali apice truncato, hand crenulato. 



This species is so closely allied to H. trinotata that it 

 will be sufl&cient to point out the characters which dis- 

 tinguish it. Its colour is not so well marked, the black 

 being pitchy, and the elytra obscure yellow, with the 

 markings indistinct. The antennae are of different struc- 

 ture, being rather more slender, even less thickened to- 

 wards the apex, and with the terminal joint longer. The 

 male characters are different ; in that sex the penulti- 

 mate joint of the antennge is markedly longer than in the 

 female, about as long as broad ; the seventh dorsal seg- 

 ment of the abdomen has the hind margin non-crenulate, 

 and the ventral plate of the same segment has the hind 

 margin less straight and more rounded than in the 

 female. 



I have found this species only near Edinburgh. 



Ohs. — I have seen but three specimens (two i and 

 one ? ) of this species. The structure of its antennae 

 seems to me to be quite irreconcileable with the idea of 

 its being a variety of H. trinotata. Its shorter more 

 transverse thorax, and broader less parallel form, apart 

 from the S characters, will readily distinguish it from 

 H. xanthoptts. Perhaps it may be found mixed with long 

 series of H. trinotata, but I expect it will prove very 



rare. 



90. Homalota xanthopus. 



Linearis, nigra, antennarum basi elytris pedibusque 

 testaceis; elytris circa scutellum angulisque apicis 



