1890.] 47 



The entirely ferrugiiieous colour of this species, with the exception 

 o£ the apical joints of the antennae, the rugosely punctured head and 

 thorax, and the general broadly ovate form, will assist in its recognition. 

 A single specimen in my collection. 



Zeteticus bifasciatus, n. «/>. 



Fulvous, pubescent ; palpi robust ; head and thorax granulate-punctate ; elytra 



very finely punctate-striate, clothed with fulvous pubescence, a transverse band at 



the base, and a broader one below the middle, violaceous-blue ; claws bifid. 



Length, 3 lines. 



Head closely and strongly punctured, fulvous ; antennsB filiform, entirely dark 



fulvous, pubescent, the third and fourth joints elongate, of equal length, the rest 



gradually shortened ; thorax one-half broader than long, transversely depressed near 



the base, the sides nearly straight, very obtusely angulate before the middle, the 



surface very closely and rather finely punctured, clothed with fulvous pubescence ; 



scutellum fulvous; elytra scarcely visibly flattened near the suture, very fiuely 



punctate-striate, the flavous portion closely pubescent, the violaceous bands more 



shining, the first not quite extending to either the basal or lateral margin, widened 



towards the suture, the second band broader, placed below the middle across the 



elytra, but also interrupted at the sides ; posterior tibice with a single spine. 



Hab. : Peru. A single specimen. 



PeribJepfus, Clark (changed later on by von Harold to Zeteticus), 

 seems to me the most suitable genus for the reception of the present 

 species, on account of the incrassate palpi, the single tibial spur, and 

 the bifid claws ; the elytral pattern resembles several other known 

 species belonging to different genera. 



{To be continued). 



Sterility of Typhlocyhm caused hy the larvae of •parasitic Hymenopfera and 

 Diptera. — In the current volume of the " Comptes Eendus dcs stances de I'Academie 

 des Sciences" is an article, dated July Sth, by M. Alfred Giard, on the parasitism of 

 a certain species of TyjMocyba, by Hymenopterous and Dipterous larvie, the former 

 living in an external attached sac, the latter within the body of the host ; their 

 modes of life and ultimate development are given, but in neither case is the species 

 determined. Further observations by the author have been made this year, the 

 results appear in the "Comptes Rendus" of the 4th November, and are so interesting 

 that 1 transcribe the greater part of them, as follows : — 



" The larvae of Hymenoptera and Diptera parasitic on the Typhlocyha that I 

 mentioned in a former communication belong, as regards the former, to Aphelopus 

 melaleucus, Dalman, and the latter to Atelenevra* spuria, Meig. {A. velutina, Macq., 

 Chalarus spiirius, Schiner). I bred both these insects in captivity ; like their hosts 

 they have two generations in a year. One proceeds from nymphs formed during 

 the last fortnight of June, is disclosed at the beginning of July ; the other infests 

 the second generation of Typhlocyha ; it assumes the nymph form towards the 

 cud of September or in October, and probably passes the winter in this state, and is 

 perfected in the following spring. 



* Rede Ateloneara, cj., Scudder's "Nomenclator Zoologicus," p. 37. — J. W. I). 



