66 Rev. T. A. Marshall's monograph of 



the base almost to the apex, finely rugulose and snbreticulated ; 

 1st abdominal segment nearly straight, hardly widened behind, 

 punctato-rugulose ; tiibercles slightly prominent. Wings dull 

 hyaline, nervures distinct, radius strongly curved, radial areolet 

 very narrow, stigma subfuscous (pale in the 6*), more or less 

 whitish at the base. Antennae $ 17-jointed. 



" Described from three males, twelve females. Not 

 uncommon near Berlin from the end of May to the 

 beginning of June." 



My specimen was taken near St. Albans. 



ii. Wesmaelia, Forst. 

 Forst., Verb. pr. Eheinl., 1862, p. 251 ; Marsh., 

 E. M. M., 1872, p. 257. 



Male unknown. Antennae J filiform. Fore wings with 2 * cubital 

 areolets ; praediscoidal separate ; radial areolet semicordate ; meta- 

 carpus not longer thaii the stigma ; radius slightly curved ; 



* The following is an undescribed exotic form, having 3 cubital 

 areolets, but belonging in all other respects to the Euphorides, and 

 nearly allied to Wesmaelia. 



Aridelus, n. g. 

 Antennae feminae fihformes. Palpi maxillares 6-articulati. 

 Areolae cubitales tres ; prima cum praediscoidali confusa, se- 

 cunda parva, oblonga, extus aperta ; areola radialis lanceolata ; 

 metacarpiis stigmate brevior ; radius subcurvatus. Alae inferiores 

 areola radiali petiolata. Mesothoracis sulculi nulli. Abdominis 

 segmentum primum sublineare, segmentis caeteris sirnul sumptis 

 aequale. Statura omnino Wesmaelice. Terebra vix subexserta. 



Aridelus bucephalus , n. s. 



Rufo-testaceus, antennis (praeter articulos 5 apicales), oculis, 

 stemmatico, mesothoracis maculis 2 humeralibus, tibiarum posti- 

 carum apice, tarsorum anteriorum articulo ultimo, tarsis posticis 

 totis, terebrae etiam valvis, nigris. Alae nigricantes squamulis 

 rufo-testaceis, nervis et stigmate nigris, linea sub hoc albicante. 



Rufo-testaceous, antennae (except the 5 apical joints), eyes, 

 stemmaticum, two humeral spots on the mesothorax, apex of hind 

 tibiae, last joint of 4 anterior tarsi, hind tarsi altogether, and valves 

 of the terebra, black. "Wiugs blackish, squamulae rufo-testaceous, 

 nervures and stigma black ; beneath the latter is a whitish line. 5 • 

 Length, 2^ ; wings, 4 lin. 



Antennae rather shorter than the body, moniliform, the joints 

 oblong ; 18-jointed, joints 1 — 13 black, the rest abruptly testaceous. 

 Head and body formed as in Wesmaelia, smooth and shining 

 except the thorax, which is covered with circular reticulations, or 

 variolosc, and less shining. Segment 1 proportionally rather 

 shorter than in Wesmaelia, curved only near the apex, where it is 



