146 



and is an immigrant into Hawaii. It is distributed over the 

 entire Oriental Kegion, running into the Palearctic in Japan 

 and China ; it is also recorded from Celebes and New Caledonia. 



Lygaeidae. 



The ova in all cases known to me are of very similar form, 

 i. e. "Kidney-bean shaped." Myrmus miriformis {^^), Dalader 

 acuUcosta {^^), Anasa tristis (^^), Leptocoris trivittatus C^), 

 etc., have been figured and with, generally, some nymphal 

 in stars. 



The lifehistory of Myodocha acuta is also now fairly well 

 known (^^). 



Like the Cimicidae, some Lygaeids are carnivorous, some 

 phytophagous. They are subjected to the attacks of very simi- 

 lar parasites; Anasa is attacked by Trichopoda (a Tachinid), 

 by Telenormis and Hadronotus (Hymenopterous egg-parasites) 

 and by a bacterial disease. Phyllomorpha lacmiata is re- 

 markable for its stridulation and its mode of carrying its 

 ova {'''). 



4 Rhopalus hyalmus Linneus. 



This species is almost cosmopolitan and is firmly established 

 in the Hawaiian Isles, though it must be a comparatively 

 recent introduction, as Blackburn did not take it. Its principal 

 food-plant is Pualele (Sonehus oleraceus) upon the young, 

 closed, flowerbuds (and sometimes stems) on which the bright 

 red eggs are laid in clusters. I have also found them on 

 Ilima (Sida cordifolia) at sea level and Mr. Swezey records 

 them from Euphorbia cordata and other plants. They have 

 been reported from Saccharum ofjficinarum, but they were cer- 

 tainly from clumps of Sonchus in the canefields. 



In this species, as in Nysius vinitor and delectus, the male 

 and female copulate end to end, both dorsal and horizontal. 

 They can recopulate several times with the same partner. 



(20) Leuckart 1855 Miillers Archiv. 



(21) Annandale 1905 T. E. S. London, 55-9, PI. VIII. 



(22) Chittenden 1899 U. S. Div. Ent. Circ. (2) XXXIX, 1-5, figs. 1-3. 



(23) Howard 1903 U. S. Div. Ent. Circ. (2) XXVIII, 1-3, fig. I. 



(24) cf. (e. g.) Zehntner, 1901 Indisch. Nat., I 77-94. 



(25) Bolivar 1894 Feuille Jeunes Nat. (3) XXIV 43-4; and many other 

 references. 



