104 



pupal skins of the females ; howerer, there were Psoeids amongst 

 the leaves and debris of the nest, and also several specimens of 

 this tiny Alaptus were obtained. Dr. Perkins expressed it as his 

 opinion that they had bred from eggs of the Psocid, as the latter 

 were breeding in the nest. Perhaps further observations or 

 study may prove this to be the case. 



(d) Parthenogenesis in Melittohia. 



Previous ol)servations on the habits and breeding of this in- 

 sect show that there are many more females produced than males. 

 I recently performed an experiment to ascertain if possibly the 

 insect might not reproduce parthenogenetically. Jan. 28, I 

 placed four freshly emerged females w^ith three larvae of Sceli- 

 phron. Very few eggs were laid. In about 10 days a few 

 larvae were observed. The first adults were three males Feb. 

 21; up to March 1, 5 more males have matured; and all the 

 pupae remaining are males. This experiment indicates that 

 Melittohia can reproduce parthenogenetically ; but when it does, 

 only a very small number are produced and these are males. I 

 intend to repeat the experiment for further proof. 



(c) "Injurious Insects of Formosa, Vol. I." 



I recently received a copy of this publication from the author, 

 T. Shiraki, who made us a visit here a year or so ago while 

 passing through from the United States. I find the following 

 insects treated of or figured therein which also occur in the 

 Hawaiian Islands: Pyrameis cardui C, Agrotis ypsilon Kott., 

 Heliothis armigera Hb., Hellula undalis F., Nymphula fluctu- 

 osalis Zell., Odezia hecate var. formosana Shiraki (apparently 

 is what we know as Ilymenia recurvalis Fab.), Omphisa anas- 

 tamosalis Guen., Plutella maculipennis Curt., Brurhus chi- 

 nensis L., Cylas formicarius Tryon, Adoretus umhrosus Fab., 

 Lasioderma serricorne Saun., Oxya velox- Fab., Gryllotolpa 

 africana Fab., Icerya purchasi Mask., Aspidiotus ficus Riley, 

 Parlatoria zizyphi Lucas, Coccus longulus Dougl., Lepidosa- 

 phes citricola Pack., a total of 19 species. 



