228 Zoological Society. 



April 14. — Mr. Gould, at the request of the Chairman, exhibited, 

 from the collection of the President, the Earl of Derby, a specimen 

 of a species of Toucan, which he regarded as hitherto undescribed. 

 It belongs to the same group with the other grooved-billed Toucans, 

 and is consequently referrible to the genus recently proposed by 

 Mr. Gould under the name of Aulacorhynchus . He pointed out the 

 characters which distinguish it from the other species of the genus, 

 and proposed for it the name of Aulacorhynchus Derbianus. 



Mr. Gould remarked that the colouring of the extremities of the 

 tail-feathers would alone suffice to distinguish from each other the 

 four species at present known in this genus. In Aul. sulcatus the 

 tips of the tail-feathers are not marked by any peculiar colour : in 

 Aul. Derbianus, the two, and in Aul. hamatopygus, the four, inter- 

 mediate tail-feathers are tipped with brown : while in Aul. prasinus 

 the whole of the tail-feathers are tipped with brownish red. 



The exhibition was resumed of the hitherto undescribed Shells 

 contained in the collection of Mr. Cuming. Those brought at the 

 present Meeting under the notice of the Society were accompanied 

 by characters by Mr. G. B. Sowerby. They consisted of the fol- 

 lowing species and varieties of the 



Genus Monoceros. Mon. imbricatum, var. ; crassilabrum, var. 

 album ; costatum ; cymatum, Sow. ; acuminatum (may be only a va- 

 riety of Mon. imbricatum) ; Globulus ; punctulatum ; unicarinatum ; and 

 citrinum. 



Specimens were exhibited of the following Hymenopterous Insects, 

 partly from the collection of the Rev. F. W. Hope, and partly from 

 that of Mr. Westwood. They were accompanied by characters by 

 Mr. Westwood, which are given in the 'Proceedings'. 



Plagiocera apicalis, n. s. ; Prionopelma viridis, n. g. ; Fosnus 

 australis, n. s. ; Thoracantha flabellata, n. s. ; Campylonyx Am- 

 puliciformis, n. g. ; Trigonalys melanoleuca, n. g.; Diamma bicolor, 

 n. g. ; Meria Klugii, n. s., Spinola, n. s., Millefolii, rufiventris, La- 

 treillii, and dimidiata. 



We have indicated in this list the new genera and species ; on the 

 former Mr. Westwood makes the following observations. 



Genus Prionopelma (Fam. Chalcididce). Genus Callimomem (ovi- 

 ductu elongato) cum Eupelmo (pedibus intermediis) conjungens. 

 Genus Phlebopenes, Perty (Del. An. Art. Bras., 3.), cum Callimomi 

 forte conjungendum. 



Genus Campylonyx (Fam. Proctotrupidci) . A genere Gonatopo 

 differt thorace continuo et alato, ab Anteone thoracis et antennarum 

 structura. 



Genus Trigonalys. Genus anomalum familiae dubiae. Caput et 

 antennae Lyda, abdomen Mutillcc. Alarum nervi fere ut in Myrmosd 

 dispositi. 



Genus Diamma (Fam. Mutillida:). Genus Myrmecodi affine. 

 The following Notes, extracted by Sir Robert Heron, Bart., from 

 his Journal, were read. 



1814. — For a good many years I have attended to the habits of 

 Pea/owl, and for the last eleven have written down my observations. 



