470 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



Odonata. — Eight species. 



Neuroptera. — Prohemerobiidae, two species. Sialidae, one species, 

 described below. 



Panorpatae. — ^Four species of OrtJioplilehia. 



Trichoptera. — Two species of Necrotaulius. 



Palaeohemiptera. — ^Two species, one first described below. 



Homoptera. — Four Fulgorid species. 



Seven other species of insects have received names, but are too 

 imperfect to place definitely in the system. 



Oolite (209 species). 



Orthoptera. — Fifty-five species, of which 43 are Blattoids, 3 Phas- 

 moids, 2 Grylloids, and 7 Locustoids. 



Coleoptera. — Eighty-seven species. 



Hymenoptera. — Two species of Pseudosiricidae, formerly supposed, 

 quite erroneously, to be ants. 



Odonata. — Eight species. 



Neuroptera. — Four species. 



Panorpatae. — Two species. 



Trichoptera. — Three species of Necrotauliidae. 



Lepidoptera. — Three species. 



Diptera. — Eighteen species, including forms referred to Myce- 

 tophilidae, Bibionidae, Psychodidae, and Tipulidae. 



Heteroptera. — Five species. 



Homoptera. — Ten species, including five Fulgoridae, and a single 

 Aphid. 



Twelve other species are considered by Handlirsch to be too im- 

 perfect to be accurately classified. 



The British Mesozoic insects, especially those from the Lias, are 

 largely known from A History of the Fossil Insects in the Secondary 

 Rocks of England, by the Rev. P. B. Brodie, published in 1845. 

 This work contained a general account of the subject, with a number 

 of plates drawn by Westwood, who added some critical notes, in 

 which he included the new generic name OrtJioplilehia. There w^ere 

 no formal descriptions of genera or species. Brodie himseK gave 

 specific names to 32 of the insects he figured; in 1856 Giebel named 

 67 others; and finally Handhrsch, in his great work on fossil insects, 

 gave specific names to 22 of those which had remained nameless, and 

 proposed a large number of genera. Five of the species figured by 

 Brodie received names from as many authors, namely, Westwood, 

 Hagen, Strickland, Buckland, and Buckman. More than 30 figures 

 still remain without names, but almost without exception they fail 

 to show characters from which the species could be recognized. 



Thus, of the 291 British Mesozoic insects, no less than 126 are fig- 

 ured in Brodie's work, and with a small number of exceptions are 



