Genus Megarhinus. 131 



Legs of ail uniform colour, all but the ventral surface of the femora, 

 which is of a golden colour, the rest violet with blue and red tinges. The 

 four anterior ungues are a little larger than the posterior. 



Wings long ; first fork-cell very short and narrow, its length being 

 a quarter of the size of the stem. The supernumerary and mid cross-veins 

 form a very obtuse angle, the posterior cross-vein is nearly four times its 

 own length nearer the base. Scales of the long veins thin and spatulate, 

 more or less dark, with iridescent gold, purple and blue hues. 



Note. — This species is a typical Megarhinus which has the three- 

 jointed palpi, ending bluntly in hairs. 



It is very like in colouring to Megarhinus solstitialis ; however, it is 

 larger and very much more robust, and the golden colour is deeper. 



The chief distinction between the $ 's of the two species is in the 

 absence or presence of a light ventral band on the middle tarsus. 



The larvae differ very much more; that of solstitialis is quite red, 

 that of mariae is red spotted with mother-of-pearl and green on the 

 thorax. 



Distinguished from trichopygus (described by Wiedemann and 

 Theobald), which is an Ankylorhynchus, and which has the third 

 segment of the palpi pointed; besides that it differs in some other 

 respects. 



The posterior end has no lateral fan of scales. 



Bred by us from bromelia water from the Isle of Itaparica (State of 

 Bahia)." 



Note. — I have been unable to obtain this species so have given 

 a translation from the Portuguese kindly made for me by Miss 

 de Mascarenhas of Lisbon. 



Megarhinus herrickil Theobald (1906). 



Megarhinus porioricensis. Herrick (non Yon Roder) (1905). 



The Entomologist, XXXIX., p. 241 (1906), Theobald ; Entomo. News (1905), 



p. 281, Glenn-Herrick. 



Allied to M. portoricensis, Von Roder, but differs in the 

 following respects : — 



(i) The last segment of the male palpus much longer than 

 the penultimate, at least twice as long, and (ii) the head iridescent 

 bluish green instead of brown with a shiny white border around 

 the eyes, white scales laterally, and azure blue spots in front ; 

 (iii) the hind tarsals are white except a black ring at the distal 

 ends, whilst in portoricensis the penultimate tarsal segment only 

 is white save for a small basal dark spot. 



Habitat. — Mississippi State, U.S.A. 



Observations. — This species is referred to by Professor Glenn 



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