260 THE ENTOMOLOGIST. 



I cannot imagine why nearly all my colleagues prefer the 

 spelling CoRisA ; Geoffroy wrote Oorixa., but since his time many 

 erudite authors (from Amyot and Audinet-Serville, 1843) have 

 laboured to show that Corisa is the correct orthography ; the 

 word is presumably derived from Greek " koris," the stem of 

 which is " kori-"; it is evident therefore that the suffixes "-xa" 

 and "-sa" are both merely ornamental, and equally correct in 

 a grammatical sense ; in any case Geoffroy's original orthography 

 should be adhered to. 



8. MiciioNECTA, nov. gen. nom., for Sigam, Fab. Ent. Syst. iv. 



60 (partim), 1794, and Syst. Ehyng. 104 (partim), 1803, 



et auctt. ; neque Fab. Syst. Ent. 691 (1775), neque Gen. 



Ins. 177 (1776), neque Spec. Ins. 332 (1781). 



Type. Notoncctaminiitissima, L. {Sigara minutissima, auctt.). 



It is extraordinary that Fabricius's genus should have been 

 used so long for the tiny water-bugs of which Notoiiecta mijiutis- 

 sima is the representative. It was erected in 1775, Syst. Ent. 

 691, for one species— sfrtaf (2— which the author quoted as Noto- 

 necta striata, L. ; he further cited as a synonym (!) of his genus 

 Geoffroy's Corixa. The two genera Corixa and Sigara are thus 

 absolutely identical, and the fact that *S'. minuta {minutissima, 

 L.) was added in 1794 cannot affect this. Thirty-nine species 

 have been described and grouped under the genus, of which four 

 belong to another genus ; the remainder represent perhaps 

 twenty-five species. 



Summary. 



1. Cylindrostctlms (Fieb.) Mayr, should replace Ilgdrohates, 

 Erichs. (nee Boie). Type : C. linearis (Erichs.). 



2. Gcrris aterrima, hrachypteryx, nana, phceoptera and thoracica, 

 Stephens, are MS. 



3. Gelastocoridse, nov. fam. nom., for Galgulidse. Gelastocoris, 

 nov. nom. gen. for Galgulus, Latr. (nee Brisson). Type: G. 

 oculatiLs (Fabr.). 



4. Deinostoma, nov. nom. gen. for Serphus, Stal (nee Schrank). 

 Type : D. dilatatum (Say). 



5-7. Corixa annexa, Uhl., esculenta, Motsch., and atomaria, 

 Illiger, are MS. Corixa affinis. Leach, 1818, should replace 

 C. atomaria, Fieb., 1848. 



8. Micronecta, nov. nom. gen. for Sigara, Fab. (1794, in 

 part) et auctt. (nee Fab., 1775). Type : M. minutissima (L.). 



Sept. 7th, 1897. 



