228 [October, 



those of our onelanocephaJa, vary very greatly in size, but they also 

 vary in colour, some having the bright red pro- and mesonotum of the 

 type, and others being entirely black. These six specimens were taken 

 together with a series of twelve examples of a very closely allied 

 species, which I am describing below as new, and which also varies in 

 size and colour in identically the same manner. For a long time 

 these puzzled me completely, till I dissected out their 8th segments 

 and armatures ; these afford excellent characters, and are identical 

 throughout the colour varieties of each series. I refer to ephippium 

 the six which have the 7th dorsal segment of the abdomen impressed 

 at the apex and truncate as described by Andre (Feuille des Jeunes 

 Natural, III Ser., Nos. 330 and 331, p. 3) and by Costa under the 

 name of thoracica (Prosp. Imen. Ital., 2, p. 125) ; in this species the 

 8th ventral segment has the central process much longer than the 

 lateral ones, widened towards the apex, which is semicircularly rounded, 

 the lateral processes are curved, flat, and parallel-sided, converging 

 towards the central one, but not quite touching it at their apices, 

 which are obliquely truncate ; the 7th dorsal segment is sharply toothed 

 on each side. 



Le Tarf, on Foeniculum, July 24th to 26th, 1896. 



MUTILLA FRATER, n. Sp., <^ . 



Identical with the preceding in coloration, most of the specimens having the 

 pro- and mesonotum bright sanguineous-red, the rest of the insect being black ; in 

 one small specimen the scutellum is black, and another small one is practically 

 entirely black, having only the slightest indication of a browner tint about the pro- 

 notum, the wings have a brown band near the apex as in ephippium, and tlie 

 puncturation and sculpture are as in that species, but the 7th dorsal segment is not 

 dentate at the sides, but merely sinuate, and has only its extreme apex narrowly 

 truncate, there is no apical fovea or impression, but the surface near the apex is 

 densely clothed with fine short hairs, the 8th ventral segment has the central process 

 angulated at its sides at its greatest width, whence the sides converge to the apex, 

 which is pointed, the lateral processes are narrow, straight and subparallel, their 

 apices pointed. 



Le Tarf, on Fmnicidum, July 24th to 26th, 1896. 



Unfortunately Mr. Eaton only met with males of this species, so 

 that the ? has yet to be determined. 



APTEROGTNA. 



In examining the ^ specimens of this genus taken by Mr. Eaton 

 I notice some peculiarities in structure which do not appear to have 



