56 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xii, 



It seems probable that 6. maia and isis are synonyms, as both species occur in the same 

 region. Rothschild states that G. isis is only a color aberration of G. maia. My large 9 agrees 

 well with Westwood's figure in the Naturalists' Library. It is from among the duplicates 

 received from the British Museum, and agrees with the specimen labeled G. westwoodi Rothschild. 



The type of G. isis is in the Dublin Museum, and that species does not occur in the British 

 Museum. [A later penciled note states that the type of G. isis is in the Oxford Museum, and 

 from it the following notes were made.] The same as I have; four heavy black lines cross fore 

 wing; no true ocellus [on fore wing], but a small oval discal spot, edged within with black; 

 large ocellus on hind wing, black center, brown ring, then a black ring, inclosed by a brown, 

 end outermost pink broad ring over half an inch across. 



Geographical distribution. — Port Natal, Cape, South Africa (Walker in British Museum). 



Larva. — (Gynanisa isis). Body cylindrical, thick, a large thick spiny caterpillar. Head 

 about one-half as thick as the body; surface unarmed, with short minute wrinkles or corruga- 

 tions; pale olive green; a short black line on each side of the clypeus, the anterior division of 

 which bears a low conical tubercle, situated each side of a median smooth ridge. 



Prothoracic shield distinct, of the usual lunate shape, unarmed, the surface nearly smooth, 

 only slightly corrugated, and the front edge shining jet black; on the side of the segment 

 directly in front of the spiracle is a low thick tubercle, and lower down a few simple flattened 

 pale warts. 



Second and third thoracic segments each with two dorsal tubercles, not erect but flattened 

 and adhering to the skin on the basal two-thirds, they are pointed inward toward each other, 

 with the ends erect, but rounded, not ending in a spine; those of the third are a little larger 

 than those on the second segment. A supraspiracular and an infraspiracular smaller minute 

 tubercle, a continuation of the three rows of similar tubercles on the sides of the abdominal 

 segments. These two segments are crossed by three irregular rows of irregular flattened pale 

 tubercles. 



On abdominal segments 1 to 7 are six rows of large tubercles (three on each side of the 

 body) inclined inward and backward toward the median line of the body, and larger than 

 those on the thoracic segments, each ending in a stout sharp point. The two dorsal spines of 

 each segment are tipped with black, the small lateral ones not thus tipped. These spines are 

 all smooth and bear no setae. In the neighborhood of and behind each spiracle is an irregular 

 group of five to six elongated oval crateriform warts, and two between the dorsal spines on the 

 first three abdominal segments. 



On the eighth abdominal segment is a single median stout short spine, not so long as those 

 in front, but deeply cleft or forked at the end, each fork acute and diverging from its mate. 

 Around the base of the spine are about 16 pale flattened circular smooth warts. 



Suranal plate subtriangular, apex much rounded, with about a dozen solid thick black 

 tubercles, each giving rise to a short minute seta; they are mostly collected around the end of 

 the plate. A lateral reddish line. Thoracic legs stout, pale, black at the sutures between the 

 joints. Abdominal legs reddish below, dark on the planta. Under side of the body speckled 

 with fine oval setiferoiis pale warts. Anal legs large, their sides triangular in shape, bright 

 yellow, the lower edge or plantar region sliming jet black. Spiracles pale sienna brown. 



Length 77 mm., thickness 15 mm. 



Described from a blown specimen from Natal received from Staudinger and Bang-Haas. 



GYNANISA WESTWOODI Rothschild. 



Plate CIX, fig. d. 

 Gynanisa westivoodi RothscMld, Nov. Zool., II, p. 45, 1895. 



Imago. — Differs from G. maia (Klug) by its extremely falcated fore wings and dingy color. 



"Fore wings much narrowed toward the apex and strongly curved or sickle-shaped, 

 brownish buff powdered with black and gray scales on the basal half; the transverse line nearest 

 the base is elbowed, but not zigzag as in maia (Klug). Ocellus diamond-shaped, thus with a 



