66 Entomological Society, 



called gland, the capillary system of which was composed of a great 

 number of parallel vessels aggregated together in bundles, and form- 

 ing loops on the free surface of the gland, and in the other part of 

 the bladder the arrangement was also remarkable for the parallel 

 manner in which the vessels were disposed ; in this fish three, but 

 in others as many as six, vessels ran parallel to each other. The fact 

 of the air-bladder being subservient to the function of respiration 

 was supported to a certain extent by the distribution found in the 

 anterior compartment of the air-bladder of the eel ; in this fish the 

 vascular net-work approached more nearly that of the cellular lungs 

 of the Batrachia than any other class of vessels. The author con- 

 cluded by stating that the probable use of the gland in the closed 

 air-bladders might be, not that of secreting air, but of keeping in a 

 pure state the air already there, as those fish provided with a gland 

 generally live in deep water, and from having no outlet to the blad- 

 der are unable to change the contents should they have become im- 

 pure. The paper was accompanied with injected specimens and with 

 diagrams of the most important parts alluded to by the author. 



ENTOMOLOGICAL. SOCIETY. 



November 1, 1841 {continued). — W. W. Saunders, Esq., F.L.S., 

 President, in the Chair. 

 Descriptions of the Australian species of Lamellicorn Beetles, be- 

 longing to the family of the Sacred Beetles. By J. O. Westwood, 

 F.L.S. 



After noticing the Circellium hemispheericum, Latr., (Guerin, Icon. 

 R. An. ins., pi. 21. f. 3. — Coproecus h. Reich., Ann. Soc. Ent. France, 

 1842, pi. 5. fig. 2.), the Aulacium carinatum, Reich., (Mentophilus 

 Hollandice, Laporte, Hist. Nat. Ins. Col. 2. pi. 4. fig. 4.), he describes 

 the genus Tessarodon, Hope, in detail, giving characters of the type 

 At. Hollandice, and of the two following new species : — 



Tessarodon angulatus, W. T. subovalis obscure castaneus, capite 

 et prothorace rude punctatis, clypeo in medio dentibus duobus co- 

 nicis, lateribus ante oculos valde angulatis, tibiis posticis ad api- 

 cem appendiculatis. Long. corp. lin. 3. — Hab. New Holland. 

 Swan River? Mus. Hope. 

 Tessarodon piceus (Hope MSS.). T. parvus subovalis castaneus, 

 capite et prothorace rude punctatis, capitis angulis ante oculos ro- 

 tundatis, tibiis posticis simplicibus. Long. corp. lin. 2J. — Hab. 

 Port Essington. New Holland. Mus. Hope. 

 Descriptions are then given of the two following new genera : — 

 Cephalodesmius, W. Clypeus in medio 4-dentatus, dentibus inter- 

 mediis valde elongatis. Palpi labiates, articulo *2do tumido, ovato, 

 Siio minuto. Prothorace magnus, 8-angularis, elytra subcordata. 

 Pedes valde elongati. Tarsi antici distincti, breves. Tibia inter- 

 media bicalcaratce, posticce l-calcaratce. 

 Cephal. armiger, W. Niger, capite nitido, punctato, pronoto sub- 

 opaco, elytris opacis subsulcatis intra marginem lateralem acute 

 carinatis. Long. corp. lin. 5. — Hab. New Holland. Mus. Soc. 

 Ent. Lond., &c. 



