66 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xii, 



cell. This is an entirely provisional group (perhaps an offshoot from the Bunaeinas), as my 

 material is imperfect, and we know nothing of the transformations of the single genus Cyrtogone. 

 [The larva is now known.] 



[The following fuller account was left in manuscript:] 



Body stout; head of moderate size, fairly prominent; front rather wide, narrowing a 

 little toward the labral or oral region; eyes rather large; antennae of male bipectinated, in 

 form like those of SpJiingicampa, with about 20 joints with 2 pairs of densely ciliated branches; 

 in female a single pair of stout pectinations; the terminal fourth of the antennas filiform; palpi 

 thick, stout, obtuse at the end; maxillae, fairly well developed, very slender, separate, but if 

 unrolled they would be nearly as long as the palpi, i. e., would reach nearly to their tip. Fore 

 wings broad, falcate; the costa suddenly bent back near the apex, which is broad and squarish; 

 outer edge rather deeply excavated; inner angle rounded. Hind wings broad and short, apex 

 short, rounded; outer edge irregularly scalloped; in the female the inner angle reaches to the 

 end of the abdomen. The sexes much alike, varying hi distinctness, the shape of the male 

 wings differing from those of the female in being deeply excavated on outer edge. There are 

 11 veins in the fore wings and 8 in the posterior ones; the venation differs from that of other 

 groups in that veins II,, II 2 , and IL, [=111,, etc.] of the fore wings all originate at or near the 

 same point, quite far beyond the outer end of the discal cell; vein III 2 not independent, i. e., 

 not detached. (For further details see the characters of the genus.) 



While the markings are irregular mottlings, there being no discal ocelli or spots, there is a 

 broken, more or less distinct basal and extradiscal line, the latter tending to become obsolete. 



This moth was originally referred to Saturnia by Westwood, and though afterwards assigned 

 a position in the Pinaridae by Kirby, it does not seem to have any true affinity with that family. 

 The group is apparently an offshoot from the Bunaeinae, judging by the venation, the shape of 

 the head, and the development of the palpi and maxillae, and the present position assigned to this 

 most interesting genus must be regarded as purely tentative and provisional. It is a very 

 specialized group, apparently preserved by its mimicry of dead leaves. Eggs taken from the 

 abdomen are large, round, spherical, like those of Saturnians. 



Geographical distribution. — Restricted to the Ethiopian realm, one species confined to 

 Sierra Leone, and the other inhabiting southern Africa. 



[Cyrtogone being a synonym of Micragone, the subfamily must take the name Micragoninae. 

 The species are actually rather numerous. Sir G. F. Hampson writes (litt. May 13, 1912): 

 " Cyrtogone herilla is certainly the same genus as Micragone agathylla. We have seven species 

 under Cyrtogone, several undescribed."] 



MICRAGONE Walker. 



Saturnia Westwood, Proc. Zool. Soc. London, 1849, p. 57. 

 Micragone Walker, Cat. Lep. Het. Brit. Mus., VI, p. 1342, 1855. 

 Cyrtogone Walker, Cat. Lep. Het. Br. Mus., VI, p. 1343, 1855. 



Imago. — ? . Head of moderate size, indeed rather small, f airly prominent ; eyes moderate 

 in size. The front of the head is rather wide, full, and convex, the vestiture rather close. 

 Antennae of s bipectinated much as in SpJiingicampa; rather broadly branched, about 20 sets 

 of branches which are even in length on each joint. Antennae of ? with long, well developed 

 thick pectinations on the basal two-thirds, densely ciliated; tip filiform, composed of about 12 

 joints, with fine short slender pectinations, the distal third thick, with a pair of short minute 

 setae representing the pectinations. Only a single pair of pectinations to a joint; the joints 

 themselves are a little longer than wide in the middle. Palpi thick and short, blunt, not 

 extending to the front of the head; third joint minute, not distinguishable, conical, very small 

 (Walker) . ' ' Proboscis extremely short and feeble ' ' (Walker) . In M. cana the maxillae separate, 

 minute, not reaching beyond the middle of the palpi. Thorax in shape much as in SpJiingi- 

 campa, being high and full, overhanging the head. 



