26 Insecta. 



known primitive Cucujoid ancestor, or was possibly separated off in some pre- 

 coleopterous stage of its phylogeny. H. Scott (Cambridge). 



77) Sharp, D., Notes on the wings of Coleoptera. I. The British spe- 

 cies of PterosticJiHS. lu: Entomologist, Bd. 46, Heft 3, S. 82— 87, 1913. 



The species are dealt with in systematic order: in each case the number of 

 specimens examined is given, and the measurements of wings and elytra. The 

 genus is one which includes an unusually large proportion of flightless forms. 

 The facts relating to the 22 British species are summarised at the end of the 

 paper as follows: 10 are flightless, 11 fully winged, and 1 (P. minor) is dimorphic, 

 having about half its individuals flightless and half fully winged. Wings are al- 

 ways present, though in some of the flightless species they are only minute ve- 

 stiges. The vestigial wings are quite different in shape to the normal wings, but 

 exhibit shapes characteristic of the species to which they belong. Both normal 

 and vestigial wings may exhibit considerable Variation. Variation does not appear 

 to be correlated with sex, and only rarely with locality. Nothing can be said as 

 to what causes some specimens of P. minor to be flightless while others are fully- 

 winged. Flightless spp. have a more contracted metathorax than fully winged spp. 



H. Scott (Cambridge). 



78) Grl'een, E. E., On some luminous Coleoptera from Ceylon. In: 

 Trans. Ent. Soc. London, Heft 4, S. 717—719, Taf. 81, 1912. 



Three spp. are dealt with. (I) Harmatclia bilinea Walker: the d is (at any 

 rate occasionally) luminous; the $ is unknown. The luminous spots of the c? appear 

 to be closely connected with the spiracles; there are 8 on either side of the ab- 

 domen and 1 on either side of the thorax. When the light is emitted", the ab- 

 domen is slightly depressed, to expose the dorsolateral area; when at its bright- 

 est, the whole abdomen appeared to be irradiated internally. The luminous spots 

 were more brilliant on the dorsum, but could also (by transmission) be seen on 

 the venter. 



(n) Dioptoma adamsi Pascoe: both sexes are luminous. The $ is elongated, 

 apterous, and grub-like, with a large photogenic organ which emits an intense 

 greenish-yellow light, on the venter of the penultimate segment: she was ob- 

 served signalling to the S with the end of the abdomen recurved over the back: 

 the arrival of the cT caused a partial eclipse of the light and the return of the 

 abdomen to its normal position. The c? exhibited no light when approaching the 

 5, but later displayed (under sexual excitement) a brilliant series of emerald-green 

 lights, 4 along the base of the prothorax, 8 along either side of the abdomen, 

 and two converging dorsal series on the posterior abdominal Segments: inter- 

 mittent flashes, not exactly located, were also observed on the ventral side of 

 the thorax. 



(III) Lamprophorus iencbrosus Walker: the (S<S ahvays approach the 5 without 

 emitting any light, though at other times displaying a very bright light: on the 

 arrival of the cT the light of the $ is partially eclipsed. Several cTJ" often attend 

 a Single ?. H. Scott (Cambridge). 



79) Champion, G. C, Coleoptera, etc., in Bromelia ds. In: Ent. Mo. Mag., Bd. XXIV, 

 Heft I, S. 2—7, 1913. 



This paper gives a list of certain bromeliadicolous Coleoptera found in Costa Rica, 

 and descriptions of several new species, and of a new bromeliadicolous Hemipteron. The 

 Coleoptera that Lave been found between the bases of the leaves of these epiphytic plante 

 beloDg to the families Carabidae, Djtiscidae, Hydrophilidae, Staphylinidae, Trichoptery- 



