NO. 2242. MORPHOLOGY OF THE 8TREPS1PTERA— PIERCE. 439 



11. Genus STYLOPS Kirby (1802). 



The genus is hereby limited in the strict sense to those species in 

 which the scutum is completely divided into two lateral pieces by 

 the praescutum and scutellum. Typically it is also characterized 

 by the scutellum being rather broadly rounded in front, not peduncu- 

 late. 



The illustrations published by various authors, especially F. 

 Smith,^ show the general characters of the genus. On the strength 

 of these trhnmerana Smith is to be separated from aterrima New- 

 port and placed in the genus Neostylops. 



The genus in the strictest sense is now composed of the following 

 species : 



1. melittae Kirby, 1802 (type of genus); Europe; parasite of 

 Andrena nigroaenea Kirby. 



2. kirbii Leach, 1817 ; England ; host unknown. 



3. dalii Curtis, 1828; England; parasite of Andrena labialis 

 Kirby, 



4. childreni Gray, 1832; Nova Scotia; parasite of Andrena vic- 

 thna Smith. 



5. spencii Pickering, 1835; Europe; parasite of Andrena tibialis, 

 Kirby. 



6. aUrrhna Newport, 1847; England; parasite of Andrena trim- 

 merana, Kirby. 



7. dominiquei Pierce, 1909; France; parasite of Andrena -flessae. 

 Panzer. 



8. championi Pierce, new species; England; host unlmown. 

 It probably also contains: 



9. thwaitei Saunders, 1872 ; Europe ; parasite of Andrena afzeliella 

 Kirby. 



10. nassonowi Pierce, 1909; Europe; parasite of And,rena carhon- 

 aria Linnaeus. 



11. ventricosae Pierce, 1909; Hungary; parasite of Andrena ven- 

 tricosa Dours. 



As full descriptions of most of these species occur in Bulletin 66 

 no further mention will be made unless new notes require it. 



2. STYLOPS KIRBII Leach, 1817. 



Stylops kirbii Leach, Zool. Misc., vol. 3, p. 135, pi. 149. 

 The illustration of Stylops kirhyi Leach by the author proves that 

 it differs from any of the other English species, by the frontal 

 prominence, the shape of the maxillae, and the antennae. Unfor- 

 tunately the methathoracic structure is very indistinctly drawn, but 

 judging from the shading the species must remain in typical Stylops. 



» Trans. Ent. Soc. Lond., vol. 4, n s., 1856, pp. 1-4, pL 24. 



