8062 



Entomological Society. 



Mr. Pascoe stated that the Ceutorhyncus biguttatus, Schon. Gen. et Spec. Curcul. 

 viii. pars 2da, p. 158, was identical with the C. raphaelensis, Chev. 



Reverting to the subject of " dimorphism " discussed at the previous Meeting, Mr. 

 Pascoe said that, in the opinion of Mr. Bates, neuter ants were only dimorphous 

 females. Mr. Baly thought that every species of Sagra had a dimorphous female. 

 The President said that he had in some cases found two forms of worker ants, which 

 would make four forms instead of three. Mr. Lubbock would be glad to know pre- 

 cisely what was meant by dimorphism : no one denied that in certain orders of insects 

 there were developed females and undeveloped females, or neuters or workers : was 

 " dimorphism" anything more than a new name applied to an old-established fact? 



Mr. Stevens exhibited a new species of Eudicella from Ovampo Land (South- 

 Western Africa), and the nest of a trap-door spider (Actinopus) from Affghanistau. 



Sir John Hearsey exhibited a collection of Noctuidse and other Lepidoptera from 

 India, and remarked upon the apparent identity of some of them with British species. 

 Amongst them were specimens of Deiopeia pulchella, exactly similar to British spe- 

 cimens. Sir John said that that species was common in India: he remembered 

 introducing from England the seeds of a plant never before taken to India ; as soon 

 as the plants grew up they were attacked by the larva of this moth, and he bred (he 

 thought) as many as 500 specimens of the perfect insect. 



Mr. Waterhouse exhibited a series of the British species of the genus Tychius, in 

 illustration of the paper mentioned below. 



Papers read. 



Mr. Lubbock read a paper " On the Larva and Pupa of Lonchoptera." It con- 

 tained an elaborate description of the dipterous larva of which Mr. Lubbock had ex- 

 hibited a drawing at the February Meeting of the Society. Since that time he had 

 obtained more specimens of the larva and the pupa, which also was minutely described. 

 From two of the pupa? there had emerged two specimens of a species of Lonchoptera, 

 probably L. lutea. 



With reference to the description of the pupa, Prof. Westwood remarked that he 

 could not understand a dipterous pupa without traces of the limbs lying on the breast. 

 Mr. Lubbock's observations were full of interest, and he trusted they would be con- 

 tinued. 



Mr. Waterhouse read " Descriptions of the British Species of the Genus Tychius." 

 The number of species described was eleven, being two more than were enumerated 

 in Mr. Walton's Catalogue ; of these two, one had, by British coleopterists, been con- 

 founded with T. Schneideri, and the other (T. brevicornis of the paper) was apparently 

 undescribed. A brief abstract of the characters of the less clearly distinguished spe- 

 cies was thus furnished by the author : — 



1. T. hamatocephalus, Schouh. Of this insect only two supposed British speci- 

 mens appear to be known — one in Kirby's collection, which was received from Mr. 

 Spence ; the other in the collection of Mr. Wollaston, to whom it was given, with 

 other small Coleoptera, as having been taken in the Isle of Wight. 



2. T. 5-punclatus, Linn. 



3. T. polylineatus, Germ., Schonh. This insect is also described by Schonherr, in 

 his ' Supplement' (vol. vii. p. 311), as T. lineatulus, Kirby, from English specimens 

 sent by Mr. Walton ; but the somewhat obtuse tooth of the hinder femora is over- 

 looked, and I have no doubt that T. lineatulus and T. polylinealus will be found 

 identical. With regard to the name lineatulus, as applied to different species of 



