565 



Kellers. Hawaiian entomologists must, therefore, thank Gover- 

 nor Poyer, Dr. Kellers, and Mr. Giffard for our increased 

 knowledge of Samoan insects. I must also mention Captains 

 Trask and Dawson of the Oceanic S. S. Coy, who kindly took 

 charge of packages and saw to their safe delivery. 



The length of time it has taken to work out this collection 

 is due first to the war, which turned the attention of so many 

 scientific men to work immediately connected with the war, 

 and then to the difficulty of getting specialists to work up 

 some of the groups. At present some are in the hands of 

 specialists and we hope the remainder will shortly be' at- 

 tended to. 



The present paper deals only with the fulgorids and gives 

 us some idea of that group in the islands of Tutuila and 

 Niiie for the first time. It consists of twenty-six species 

 distributed in nineteen genera and seven families, viz : 



Cixiidae, five genera, six species. 



Delphacidae, six genera, nine species. 



Achilidae, one genus, two species. 



Ricaniidae, one genus, two species. 



Derbidae, two genera, two species. 



Tropiduchidae, two genera, two species. 



Issidae, two genera, three species. 



When we compare these with Hawaiian fulgorids a distinct 

 difiference is at once seen. Not a single genus is common 

 to both regions, with the exception of the introduced Perkinsiella, 

 and in this instance the species are distinct. Hawaii has only 

 two families represented, Cixiidae by two genera and a few 

 species and Delphacidae with numerous species, and several 

 genera belonging to a tribe not present in Samoa. Turning 

 to the Cicadoidea we find a still greater difference, as Samoa 

 has representatives of Cicadidae, Cercopidae and Cicadellidae, 

 whereas Hawaii has only representatives of Cicadellidae. 



This strongly indicates that there has been no land con- 

 nection between these two archipelagoes, since they received 

 their fulgorid fauna which, judging by the antiquity of the 

 suborder to which they belong, must have been from about the 

 time of their first appearance on dry land bearing vegetation. 



