558 Mr. D. Sharp and Mr. F. Muir on the ComjMrative 



chitinous on the outer edges (ms) and membranous down the 

 middle (m). Tegmen forming a ring, with a large dorsal cap-piece 

 slightly emarginate at tip, and a keel-like strut on the ventral aspect. 

 Internal sac long with two small pads (a) of chitinous short 

 spines. 



Canjohorus nudeorum (PL LXXII fig. 197). 



Median lobe large, the distal two-sevenths forming a flattened 

 tube, with the ventral edge of the median orifice pointed and pro- 

 jecting beyond the dorsal edge, the basal five-sevenths forming 

 a large sclerite on the dorsal aspect. Tegmen forming a ring, 

 with lateral lobes consolidated together forming a cap-piece, 

 slightly emarginate at tip ; at the base of the lateral lobes and 

 consolidated to them there is a large, inflated semi-chitinised 

 membrane (a) which is consolidated to the median lobe ; this may 

 represent a chitinisation of the first connecting membrane. On the 

 ventral side is a Y with a long strut (6). Internal sac long, without 

 complex armature. 



This family comes within the Chrysomelid group. 



Family CHRYSOMELIDAE. 



Forms examined : As this is one of the most extensive 

 divisions of Coleoptera, we arrange the species specially 

 studied in thirteen groups. 



1. Orsodacninae. Orsodacne nir/riccps Latr., England. 



2. DoNACllNAE. Dojiacia {Plateumaris) scricea L., and 

 comari Suffr., D. hidcns 01., semicwprca Panz., and Icmnae 

 Fabr., England. 



8. Sagrinae. Mecynodcra hcdyi Clark, Australia. 

 Caoyojyhagus hanksiac Macl., Australia. Diaphano^os 

 westermanni Schonh., Fremantle, Australia. Polyoptilus 

 sp. aff. erichsonii (not in Brit. Mus. Coll.), Australia. Sagra 

 amdhystina Gucr. var., W. Africa. Sagra nigra 01., 

 Assam. 



4. TiMARCHiNAE. Ti)na7'dia geniculata Germ., AsturisiS. 

 T. tcnebricosa Fabr., England. 



5. Criocerinae. Crioccris asparagi L., England. 



6. Clythrinae. Lahidostomis loiigimana L., Istria. 

 Clythra laeviuscula Ratz., Pyrenees. Ladmaea palmata 

 Lac. ? Pyrenees. Saxinis saucia Lee, California. 



7. Cryptocephalinae. Cryptocephalus aureokts Suffr. 

 England. C. ashtriensis Heyd. ? Asturias. 



