90 ME. WALKER ON DIPTEBA COLLECTED AT MAKESSAE. 



D. ANGUiNUM. D. spira insequali angulata aculeata, sulco longitudinal! 

 perforata. 



Rumph. 125. t. 41. f. H. Solen anguinus. 



Lang. Test. 6. Tubulus vermicularis crista dentata. 



Testa albida, teretiuscula, angulis 9 obsoletis. . Anfractus inaequales, 

 nunc confertiores, nunc remotiores. Sulcus longitudinalis in superiore 

 latere perforatus serie punctorum. Spinse breves, fomicata ad angulos 

 in latere inferiore. 



Condensation, that peculiar faculty of the mental organization of Lin- 

 ngeus, induced him to suppress this description, and attach the species, as 

 a variety, to the form he had simultaneously characterized as 



D. spira elongata, teretiusculum, inerme, fissura longitudinali. 



Gualt. test. 10. f. z. 



To this latter the published details belong, except the expression " pas- 

 sim concatenata et quasi poris pertusa " (which was a subsequent and fal- 

 lacious addition), and the account of the variety. 



S. PENIS. D. teres, extremitate radiata disco cylindris poroso. 



" Bonan. i. f. 38.", indicated in the tenth edition of the * Systema ', was 

 among the synonyms. The " Stigma, &c." was an addition ; so too were 

 " Isevis," " tubulosis ", and " sequalibus". The term " hemisphaerico " has 

 replaced the earlier " convexo." 



In addition to the published species, the S. Spirorbis of the * Systema ' 

 appears to have been indicated as 



D. PLANORBE. D. spira plana, adhaerens. 



It. W. Goth. 170. Dentalium testa spirali plana adhserente. 



Plane. Conch. 13. n. 3. Vermiculus in littore Veneto foliis algae ad- 

 haerens. 



Testa minima, magnitudine nuper ab ovo exclusae cochleae, cujus formam 

 omnino gerit, at plana omnino est, et altero latere omnino fuci foliis ad- 

 haeret. 



This was evidently diflferent from the Serpula planorhis of the * Systema.* 



Catalogue of the Dipterous Insects collected at Makessar in 

 Celebes, by Mr. A. B. Wallace, with Descriptions of New 

 Species. By Teangis Walkee, Esq , E.L.S. 



(Read June 2nd, 1859.) 



Fam. CTJLICIDiE, Haliday. 



Gen. Megaehina, JDesvoidy. 



V 1. Megarhina iMMiSERicoRS, n. s. Mas. Nigra, squamosa, capite 

 thoraceque viridibus, hujus disco cupreo, proboscide palpis pedibus- 

 que purpureis, femoribus subtus fulvis, tarsis intermediis albo bifas- 



