336 



PORTIONS OF A LETTER 



Sphcerocera equina undergoes all its transformations in 

 eighteen clays. The puparium is about 3 lines long, of a bright 

 chestnut, cylindric, with the anterior extremity a little attenuate, 

 bearing two protuberances the remains of the anterior spiracles ; 

 the other end is blunt, the conic processes of the last seg- 

 ment remaining as a number of small points. The whole 

 surface is very finely shagreened. 



Sphaerocera, Macq. 



subsultans, Fahr. 



monilis, Hal. 



vaporariorum, Hal. 



deuticulata, Meig. 



scabricula, Hal. 

 Borborus, Macq. 



nitidus, Meig. 



suillorum, Hal. 



niger, Meig. 



equinus, Meig. 



nigrifemoratus, Macq. 



flavipennis, Hal. 



longipennis, Hal. 



vitripennis, Hal. 



ater,' Meig. 

 Apteriiia, Macq. 



pedestris, Meig. 

 Limosina, Macq. 



silvatica, Meig. 



limosa, Fall. 



humida, Hal. 



Synopsis Specierum. 



Limosina. 



arcuata, Macq. 



geniculata, Macq. 



crassimana, Hal. 



ochripes, Meig. 



scutellaris, Hal, 



nivalis, Hal. 



quisquilia, Hal. 



fungicola, Hal. 



erratica, Hal. 



clunipes, Meig. 



spinipennis, Hal. 



heteroneura, Hal. 



fuscipennis, Hal. 



vagans, Hal. 



lugubris, Hal. 



Zosterse, Hal. 



leucoptera, Hal. 



nigerrima, Hal. 



nielania, Hal. 

 Heteroptera, Macq. 



pusilla, FaU. 



Art. XXXI. — Portions of a Letter from the Author of the 

 Letters of Rusticus to Edward Newman. Published by 

 Permission of the Writer. 



De^r Newman, — The heat of the weather kills me. I 

 wish the comet would take some other course. Why does he 

 wreak his vengeance on the earth. Why don't he parch up 

 Jupiter; or if he must come here, why don't he do, as 

 Washington Irving says he ought — deluge the earth with 

 water. Indeed I hear he is soaking the Scotch and Irish, at 

 the very time that he is roasting us. I have not seen him yet: 

 I suppose he is not visible — pray goodness he never may be ; 

 if he come within eyeshot he'll roast us alive. The ground is 



