218 Di'. K. Jordan on some 



EXPLANATION OF PLATE IX. 



Kcfcrciice h-tter^. 



ec('. = ectoderm. «/<■,>;. =:mesog]cea. 



f«rf. = eudoderui. 7jew2. = nematocyst. 



€71(1. mus. = eudodermal umscle. sph. ?«. = sphincter miisclo. 



gid. c.= gland-cell. rec. »i. = retractor muscle. 



Fig. 1. Longitudinal section of the portion of the column of Alicia costce, 

 Pane, between the tentacles and the commencement of the 

 vesicles, showing the diffuse endodermal sphincter muscle, con- 

 siderably folded. Magnified 33 times. 



Fig. 2. Section through one of the large vesicles. Slightly magnified. 



Fig. 3. Transverse section through a flattened portion of an extended 

 tentacle, showing the arrangement of the nematocysts iu limited 

 areas. Magnified 33 times. 



Fig. 4. Transverse section of a middle portion of a mesentery in the 

 region of the oesophagus. Magnified 33 times. 



XXV. — On some new Species of Gohoptera in the Museum of 

 the Flon. Walter Rothschild. By Dr. K. Jordan. 



1. Trichius ornatus, sp. n. 



S 2 . Tr. obscure viridis, infra aeneo-nitens. Caput ssepe parura 

 purpurascens ; clypeo latitudine parum longiore, prsecipue in $ , 

 grosse punctate ; fronte et vertice in J minute sat sparsira, in 

 $ dense subreticulato-punctatis, duahus maculis frontis, duabus- 

 que lateralibus elongatis verticis luteis. AntennsB pallide rufis, 

 articulo primo apice viridescente, clava maris ea feminye parum 

 longiore. Palpi rufi. 



Prothorax longitudiue parum latior, apice rectus, basi rotnndatus, 

 lateribus pone angulos anticos prominentes, in c? minus quam in 

 2 rotundatos, leviter sinuatus, retrorsum gradatim ( J ) vel rotun- 

 datim ( $ ) parum ampliatus, angulis posticis rotundatis ; sulco 

 raediano longitudinali, sulcis transversis uno apicali, altero basali, 

 limbo laterali medio angustiore, utrinque macula disci obliqua 

 postmcdiana, altera minore subapicali, tertia laterali mediana cum 

 limbo ac stepe cum macula prima connexa, luteis, his maculis 

 impresi-is ; disperse, ( d" ) minute, ( $ ) crasse punctatus. 



Scutellum triangulare, longitudiue latins, marginibus exclusis 

 luteum. 



Elytra latitudine sexta parte longiora, leviter striato-punctata, 

 inters])atiis tertio caeteris multo latiore et primo parum elevatis ; 

 vitta mediana longitudinali longitudine ac latitudine variante, in 

 humeris ssepe dilatata, rufa ; linea longitudinali interspatium 

 .secundum occupante, guttis septcm in utroque elytro lufeis — 

 1* basali mediana, 2" basali marginali, 3" dorsali antemediana in 



