( 448 ) 



very slowly. On cutting nj) some a jot of water spurted out. They give me so 

 much to do that they take up all my time. 



" December 8. — During the last three days I wa< ocou|)ied with drying the 

 Hawkmotlis, and I am still afraid to pack them up. I sliiiil probably bo obliged 

 to kec]) back some which will not get dry." 



The specimens arrived in good order. There was no mould among them. 



As it is of some interest to know which species frecjuented the water-jiouls, we 

 have compared all the specimens and now give a list of the forms the collection 

 contained. The water-driidcing habit is, amonj; insects, essentially a feature of the 

 male sex. All the s[)ociraens sent by Iloll'manns indeed were males, with the 

 exception of five. However, since the collections made at the pools and other 

 places near Allianca were not strictly kept separate from one another, these 

 females may have been obtained at light or flowers. The presence in the 

 collection of some Amhtdicinai' and I'h/icrocampimie may possibly also bo ex- 

 plained in the same way. 



The Sphingidae which are most abundant in South America are species of the 

 genera Cori/tiut!, Pi-otoparcr, I'liolus, Xi/lopkaiies, and numy genera of the sub- 

 family &«////«^. Tlie majority of the species collected by lloftmanns are Sesiiiiae, 

 the other subfamilies being but sparsely represented. Nearly half the number 

 of specimens belong to two species, Pachylia Jicus and Pachi/lia resumenn. Next 

 in abundance comes Perigonia lasca f. ilu». Large numbers were also taken of 

 Pachi/Ua si/ccn, Lcurorhampha onmtus, llcnwroplanes nomitis, puree, and iniuis, 

 Aletiron iphis and iieijleetum, JVi/cer^/x stuarti, etc., some of which, as a rule, are 

 only obtained singly by collectors. It is not surprising that there are also some 

 novelties in a collection of this size. 



1. Cocytius cluentivis Cram. (1TT5). 



C. -■., R. & J., lin-isinn p. 04. n. .'M (I'.IO.S). 



2. Cocytius mortiiorum sp, nov. 



c??. C'losely resembling C. duponchel Poey C18li2) in colour and markings; 



but the black markings on upperside of body and forewing thinner. Forewing 



with a conspicuous white line at basal fourth, more or less interrupted and in 

 cell strongly curved outwards ; no black longitudinal streaks on disc; the oblique 

 lino which extends from ajiex of wing towards the postdiscal line very thin and 

 niiicb interrupted; the semitransparent space present liolow cell in 0'. ihtponehel, 

 and covered in that species with regular rows of slightly elevated black scales, is 



replaced in (\ mortiioraiii by an ill-detined clayish jiatch of ordinary scaling. • 



On hiiidvving the yellow patch of a paler tone, and only slightly sinuate ; the 

 transparent area a little larger than in C. dtipowhel. 



On underside the yellow colour also of a paler tijit, and both wings shaded 

 with yellow along costal margin to a])ex of cell or beyond. 



Legs more extended white than in V. ditpoiieliel, especially the hind tibiii ; 

 first foretarsal segment as long as second and third together, comb on inside of 

 this segment absent, excejit for one or two apical spines. 



Genitalia (|uite different. c? : Clasper ipiite small as compared with the 



enormous clasjier off. d u po /le /i e /, und much irrorated with creamy white on the 

 outside. Tenth tergite resembling that of (.'. nntaeiis, long, slender, not incised 



