534 MR. A. G. BUTLER ON THE SPHIN&IDiE. 



3. Pachtgonia abboti. 



Alaa-oglossa abboti, Schaufuss, Nunquam Otiosus, i. p. 21 (1870). 

 Colombia. 

 Seems to be nearly allied to P. coffcece. 



4. Pachtgonia magna. 



Pmgonia magna, Felder, Ueise der Nov., Lep. iv. tab. 75. fig. 13 (Nov. 187-1). 



% 



Possibly identical with the preceding ; it comes better with Pachygonia than with Peri- 

 (fonia, although it may eventually have to be placed with P. coffcece in a new genus. 



Genus 11. Ehodosoma, n. gen. 



Allied to Perigonia. Primaries elongate, triangular. Secondaries subtri^gular, 

 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- 

 tennae long and slender. Thorax and abdomen very robust ; the latter compressed, trun- 

 cate behind, with small lateral and terminal tufts. Tibiae of second and third pairs of 

 legs terminating in two strong diverging spines. 



Type R. triopus. 



Rhodosoma tkiopus. 

 Macroglossa triopus, Westwood, Cab. Orient. Ent. p. 14, pi. 6. fig. 4 (1848). 



Silhet {Stainsforth). B.M. 



The type was described as from Assam. 



Genus 12. Thyeeus, Swainson. 

 Thyreus, Swainson, Zool. 111. vol. i. pi. 60 (1831) . 



Thykeus abboti. 



Thyreus abbotii, Swainson, Zool. lU. vol. i. pi. 60 (1831). 

 Brachynota abbotii, Boisduval, Lep. Guat. p. 66 (1870) . 



Georgia {Abbot) ; New York {Boubleday). B.M. 



Tranisformations described and larva and imago figured. Am. Ent. ii. p. 123, 1870; 

 the larva is also figured by Scudder in Harris's ' Correspondence,' pi. iii. fig. 1 (1869), and 

 by Packard in his ' Guide,' p. 276. fig. 203. 



