OOLEOPTBBA. 17 



insect taken by the Eev. Matthews, near Lincohi (which is now in Mr. 

 Gorham's collection) belongs, however, to quite another genus ; it is 

 the true snbstnatus of Paykull, is a longer and darker beetle, and has 

 the club of the antenna perfoliate, with the two basal joints not pro- 

 duced inwardly, and the punctures of the elytra arranged in strias. 

 In " Some Observations on the Coleopterous Family Bostrichidaet " 

 {Ann. Mag. Nat. Hist., 1888, pp. 348-50) Mr. C. 0. Waterhouse pro- 

 posed the generic name of Stephannpachya for this insect, being the 

 Dinnderns of many authors but not of Stephens. This name has been 

 adopted in the last European catalogue (1891, p. 231), where the 

 synonymy of two of these species is given as follows : — 



" Dlnoderiii^, Stephens — hifoveolatus, Woll., ' Col. Hesp.,' 110 (siculus, Baudi., 

 B., 1873, 336). Substrlatus, Staph, {nee, Payk.)." 



" StephanoiMchyx, Waterhouse (1888) — auhstriatua, Payk., Kiesw., 30, E. Quad- 

 ricolliii, Frm., Ab., 1879, 83." 



There seems to have been some doubt as to which of these two 

 species Stephens' description of Dinnderns refers (see Gorham Proc. 

 Zool. Sac, 1898, pt. ii., p. 329), but it appears to me, without doubt, 

 that he was talking about the former of these two insects, which 

 is the species in his collection, Stephens says {Mand., vol. iii., p. 252) 

 that the two basal joints of the club of the antennas are conic- 

 trigonate, and produced within, the elytra retuse posteriorly and 

 inclining to castaneous, and the length l\ lin., all these points could 

 only refer to the former of these insects. He expresses doubt as to 

 whether his insects are the same as the substriatus, Payk., and men- 

 tions that, unlike that species, the pair he has from the New Forest 

 have the puncta irregular and not arranged in striae. 



Mr. Waterhouse (I.e.) considers that the substriatus, Steph., is the 

 Apate minutus, F.; this cannot be absolutely proved, as the type is no 

 longer in the Banksian collection, but it appears very probable. M. P. 

 Lesne {Rev. d. Bostich Ann. d. France, 1897, pp. 349-50) takes the 

 same view, but he points out that the minutus, F., is not the same 

 species as the bifovcnlatus, Woll., and, therefore, the substriatus, Steph., 

 is not the bifovcnlatus, Woll. He separates ininutus and bifnvenlatus 

 thus : — 



a. Ponctuation cTe la decliviti posterieure des elytres 



tres forte, contluente, areolaire, non distinctement 



ocellee au moins aussi enfoncee que celle des 



parties basilaires. Ecusson brillant ., .. D. hifoceolatus, Woll. 



h. Ponctuation de la declivite posterieure des elytres 



nettement ocellee, non contluente, moins enfoncee 



que celle des parties dorsales. Ecusson mat . . D. mimttus, F. 



Mr. E. C. Eye {Ent. Ann., 1863, p. 98) pointed out that the 

 Dinoderus sidjstriatits of Stephens was not, as had been supposed, the 

 insect known by the same name to continental naturalists, but belonged 

 to a different genus. He, however {I.e.), erroneously attributed Mr. 

 G. Lewis' capture at Darenth to the substriatus, Payk. It is the 

 Dinoderus pilifrons, Lesne. He separates it from the minutus, F. 

 {I.e., p. 322), as follows:— 



a . Foveoles medianes de I'aire posterieure du pronotum 



obsoletes. Kegion frontale herissee sur les cotes 



de crins dresses, denses, assez longs . . . . D. pilijh'ons, Lesne. 



t It is much to be regretted that this paper was never recorded in the Zoologi- 

 cal Record. 



