534 MR, A. G. BUTLER ON THE SPHINGIDA, 
3. PACHYGONIA ABBOTI. 
Macroglossa abboti, Schaufuss, Nunquam Otiosus, i, p. 21 (1870). 
Colombia. 
Seems to be nearly allied to P. coffee. 
4, PACHYGONIA MAGNA. 
Perigonia magna, Felder, Reise der Nov., Lep. iv. tab. 75. fig. 12 (Nov. 1874). 
q 
Possibly identical with the preceding ; it comes better with Pachygonia than with Per?- 
gonia, although it may eventually have to be placed with P. coffwe in a new genus. 
Genus 11. RHODOSOMA, n. gen. 
Allied to Perigonia. Primaries elongate, triangular. Secondaries subtridngular, 
rounded at apex, subangulated at anal angle. Discocellulars of all the wings convex. 
Discoidal cell of secondaries very short. Head small. Palpi obtuse, conical in front. An- 
tennz long and slender. Thorax and abdomen very robust ; the latter compressed, trun- 
cate behind, with small lateral and terminal tufts. Tibie of second and third pairs of 
legs terminating in two strong diverging spines. 
Type BR. triopus. 
RHODOSOMA TRIOPUS. 
Macroglossa triopus, Westwood, Cab. Orient. Ent. p. 14, pl. 6. fig. 4 (1848). 
Silhet (Stainsforth). B.M. 
The type was described as from Assam. 
Genus 12. THyrrvs, Swainson. 
Thyreus, Swainson, Zool. Ill. vol. i. pl. 60 (1821). 
THYREUS ABBOTI. 
Thyreus abbotii, Swainson, Zool. Ill. vol. i. pl. 60 (1821). 
Brachynota abbotii, Boisduval, Lép. Guat. p. 66 (1870). 
Georgia (Abbot); New York (Doubleday). B.M. 
Transformations described and larva and imago figured, Am. Ent. ii. p. 125, 1870; 
the larva is also figured by Scudder in Harris’s ‘ Correspondence, pl. iii. fig. 1 (1869), and 
by Packard in his ‘ Guide,’ p. 276. fig. 203. 
