\ 



1R74.1 187 



REMARKS ON SOME OF THE HEMIPTERA ENUMERATED BY 

 irERR THOMSON IN THE 4tii I'ASCICULUS OF HIS 'OPUS- 

 CULA ENTOMOLOGICA.' 



BY J. W. DOUGLAS. 



It appears to me tliat tliero arc some discrepancies in the above 

 named work, that, for the sake of preventing further confusion, it is 

 desirable to notice. 



G-enuB OETHOSTIEA, Fieh. 



"1. 0. CASS IDEA. 



Ting is cassidea, Fall., Hemiptera, 146, 7." 



Among the specific characters is given " prothorace carinis postice 

 "sub-divergentibus." Now, Fallen says of his Tingis cassidea, 

 " Thorax carina media distincta, lateralibus vero obsoletis." The 

 Tingis hricnnea. Germ., which is synonymous with the Tingis cassidea, 

 Fall., is represented with only one middle keel. Thomson's species, 

 therefore, cannot be the T. cassidea of Fallen. 



The synonym next given is Ortliostira cervina, Fieb., Eur. Hem., 

 146, 7, but the words in Thomson's diagnosis " prothorace angulis 

 "anticis rotundatis" are not applicable to Fieber's tricarinate species, 

 of which he says, I. c, "die Halsecke rechtwinkelig : " — this is a 

 species we know very well. Fieber cites Germar's Tingis cervina 

 (F. Ins. Eur., 18, 22) as his species, and I think rightly ; for it is de- 

 scribed (Z.c.) as "thorace tricarinato," and, further, "margine laterali 

 " dilatato, antice angustiori, angulis anticis truncatis." Thomson's 

 description, therefore, agrees as little with this, and the question 

 remains, what is it ? 



It may here be mentioned in connexion with the name Tiiigis 

 cervina. Germ., that Fieber has (Wien. Ent. Monats., vii, 212) de- 

 scribed a species as Ortliostira cervina. Germ., but without other 

 reference, even to his own previous descriptions from which it en- 

 tirely differs. It has but one keel on the pronotum, and therefore 

 cannot be Germar's species : it more resembles O. cassidea, Fall., but, 

 if distinct, it wants a new name. Fieber complicates the matter by 

 adding " Hieher gehort nach genauer Vergleichung O. platychila ^ 

 "als Synonym," which is difficult to comprehend, as O. platychila has 

 three keels on the pronotum. Perhaps the O. cervina of the Eur. 

 Hem. was intended to be referred to. 



"2. O. PLATYCHILA, Fieh. 



Ortliostira intermedia, Flor." 

 The words " pi'othoracis angulis anticis sub-prndiictis " in the 



