Astronomical Society, 419 



diipld longiiis, obconiciim. Femora postica hand incrassata. Tarsi bipul- 

 villati. Alarum nervi fer^ lit in A/wfafe dispositi ; nervo 3tio longitudinali, 

 ante apicem furcato, recto; nervo 4to longitudinali supplementali, apice 

 cellulae Imae discoidali exeunti, inde celiulte 4 posteriores marginales ef- 

 formantur. 



Sp. 1. Ap. asilica, Westw. Nigra; vertice, thoracis lateribus piceijj; 

 palpis albidis ; alarum nervis nigris.— Long. corp. lin. 9^. Expans. alar, 

 lin. 17. 



Habitat in Nova Holland!^. — In mus. nostr. 



Sp. 2. Ap. fuscicollis, Westw. Obscure fusca ; tliorace cinereo sub* 

 vittato ; palpis albidis; alarum nervis internis pallidis; corpore subtus 

 albido villoso. An varietas praecedentis? — Exp. alar. lin. 17. 



Habitat in Nova HoUandia ? — In mus. D. Hope. 



Pangonia, Latr., Macroglossa yWestw. Pallide fusco-pubescens ; facie 

 alba (ocellis 0), thorace vittis duabus longitudinalibus in medio, lateribus, 

 et macula utrinque basin versus alarum albis ; abdomine piceo, segment© 

 Imo fulvo-marginato, 2ndo et 4to albo-marginato, 3tio rufo-marginato, re- 

 liquis fusco-marginatis ; alis basi et ad costam lat^ infumatis ; pedibus tes- 

 taceis. — Long. corp. lin. 8|: long, probosc. lin. 15. Exp. alar. lin. 16. 



Habitat in Georgia Americae. — In mus. nostr. 



Pangonia macidiventris, Westw. Nigra ; thorace baud vittato ; abdomine 

 rufescenti-fusco, serie dorsali macularum rotundarum nigrarum; alarum 

 nervis (praesertim transversis) fusco tinctis ; pedibus fuscis ; corpore subtus 

 pallidius pubescenti ; ocellis 3. — Long. corp. lin. 6|. (proboscide mutil^). 

 Exp. alar. lin. 14. 



Habitat in Nova Hollandia. In mus. nostr. 



LXXIII. Proceedings of Learned Societies, 



ASTRONOMICAL SOCIETY. 



1835, nPHE following communications were made : 

 Jan. 9th. — -■- I. Mr. Sheepshanks exhibited a small clock, on 

 Fraunhofer's principle, for giving motion to an equatorial, and ex- 

 plained the construction and use of a moveable piece to be applied to 

 the eye-end of the telescope, for the purpose of micrometrical mea- 

 surements. 



Mr. Sheepshanks also exhibited a telescope fitted up as an equal- 

 altitude instrument, similar to that drawn in Plate XIII. of Dr. Pear- 

 son's " Introduction to Practical Astronomy," except that it has 

 straight radii at the base instead of a claw stand. The purport of his 

 remarks was to point out the various objects to which such an instru- 

 ment might be applied in the hands of a traveller or amateur able 

 and willing to calculate his observations. Such an instrument is evi- 

 dently a tolerable theodolite and level, as well as a very firmly 

 mounted telescope for common purposes, occultations, eclipses, &c.; 

 and if the cross axis be made with care, it would suffice as a transit 

 for the moon and moon-culminating stars in ordinary cases. But it 

 is chiefly valuable as an equal aZ/i/Mr/e instrument, which it is made by 

 an excellent level attached to a small quadrant on one side of the 

 telescope. Further particulars of Mr. Sheepshank's communications 

 on both subjects are given in the Monthly Notices of the Society. 



Third Series. Vol. 6. No. 36. June 1S35, 3 M 



