Collecting site
Boulogne sur Mer (Boulogne), France
latitude: 50.716702     50°43'0.13"N
longitude: 1.6167     1°37'0.12"E
[Precision of location: Alexandria Digital Library (with NGA GNDB data)] 
[Site Named Here by name of site (or city, etc.)] 
Collected here:
| Monotus fusca (Ørsted, 1843) | 1897 or ealier |  |  | eggs on valves of Balanus. | 
| Monotus sp. Giard, 1897 | 1897 or ealier |  |  | stalked eggs and embryos attached to shell or siphon of Donax and Tellina. | 
| Procerodes littoralis (Ström, 1768) | 1890 or earlier |  |  | Frankreich:  Boulogne. |