218 BULLETIN OF THE BUREAU OF FISHERIES. 
Foop Founp IN THE ALIMENTARY CANAL OF 218 IMAGOS OF PANTALA FLAVESCENS IN Hawal— 
Continued. 
Coleoptera: 
Scatabeid: beetlG; Psammodruss, Sp sce heise oie mieten rte ere eRe aisle icc eye iniee|eterajels ” einriele 22 
Bostrichid beetle) Rhrzopertha pusdai Ts Ue. . REG ADEE IRS IE ae a I 
Staphylinidsbectles watiay- start Seach SOM ierads - tis atholaetes weno teed ane. viele oft = 31 
Wadetermined,peetles.. there abidy- bere speach ash aciie: Ure Ret -seG-el Iyer: teaere 30 
Hemiptera: 
Plant lice vA ides ecu te tees ole thas ce cl al Beha ee aoe ae eee ees cee cla 24 
Water boatman, Corixa blackburni.............000.200% FE eyes ere Sissi a teeye Hicye Ce eye Meine Ce are Mice uel 4 
Leaf hopper, Perkinstella saccharictda ei 2 ip. nl). RRL t wats Creme e. CARE. cameo et octal 4 
Leaf hopper, Dracculacephala mollipes.). 00) 5. 51). (el oe alee: » «eed be Ses ble plete eels 3 
Deaf hopper, Nesophrosyne;perkistiss t 2/24 nih. ety 2 aga! plone): 2k b-bd erated eects tee = 3 
Chinchi bugs, Je yer ides, cer Goce hace sharpen el ira edb rn bbe a aia 2 
MACE ID Ups, Meleanen ge CON nat alee < 6inia nial alo ened eleiy alk leased pease le belgie alscair ee makina solos 4 
UWridetermined: spectese ccs caer tcier taclatcmiete rate et eae Bie alicia a reretctene vac aiiate eierexersre Secor geet tan I 
Hymenoptera: 
Apistnot thesHoneybee-.sazit Seite tise. Vie ea tt SE yates Le SEE Re I 
Parasite, \Chelonus blackburnt.):2/2ec.ta. TASS A. sletes el of hpped peo leigh BET otaoy spam oopela. oy ajaete ay epaeep I 
Parasite Paranagrs optaniless ai. easly afo a, Sale ict shah cle Eye iahe ba el io cieedy inks sinks nine I 
Windetermined eyrMenoptenols PALASiles xe cieista cats aielaa pina oke als ese hep ciate ee elaine Regie eee 3 
gpa vette (Rena iS AN 5 lyr 9s [rte 121 10) heroines HONE ESA, SSeS QS Mob URI MSO TERI mea OOO OE Te 6 
Wndetérminted ants. FES Feet TOMA. 8 EAE cre. erat Oe. POE EE II 
Lepidoptera: 
‘Tineid moth, ‘Cremastobombycia lantanella. :1.)..5.. «. .): -s,tiguin cys senieee Fae op saee|- aelaehiaere sue 5 
Wndetermined forms oa esata) «nee rah anomeric anh are rm Nalele ctu lara: Cones kaaokas a2 
Odonatare Damseltiyet Ag? 071 nS ae aster iskele oi eels aie iaia iets ait as acetal ee Le eel I 
SOc ul Cem PSG TU cette een Nal Pr Coe emer e erate ie veyeisr iecat teas eetsysveyiele srenaceretsl euniureeanterehete 8 
Mibysanoptera HD iripsy spd. ike. Medea aee ket oh. RUA A Piet cgUte Ate al Rula iets Stas ete etenat otal on theatahe 9 
Arachnida: 
Mites, tasers ei es gre ene lie a lie IM Ct On a aines Salar oro Said aE an Sy a BR ee ae I 
SPI ers de tral eo ae Pe atin nen es ae Sam aaa oie Sa cl eee cas ha ace 2 
Foop oF PANTALA FLAVESCENS IN Hawatt.—This statement is inserted here for sev- 
eral reasons. It is by far the most complete statement of the food of a single odonate 
species that has ever been published. This same species is one of those around the 
ponds at Fairport, and it is widely distributed throughout the United States. Hence 
a list of its food in Hawaii will give a good idea of the kind of insects it would be likely 
to eat elsewhere. It is also instructive to compare the Hawaiian foods with those 
eaten at Fairport. We notice that flies, beetles, and Lepidoptera make up the bulk 
of the food of this species in Hawaii. There are also present many, kinds of Hemiptera 
or true bugs, especially plant lice, adult water boatmen, and leaf hoppers, some hymen- 
opterous parasites, ants, and Thrips, a tiny insect which feeds upon the flowers and 
leaves of some plants. 
In the Fairport list there is a much greater variety of both flies and Lepidoptera, 
but there are no beetles at all, and the only bug is the plant louse. Their place seems 
to be taken by the mayflies and caddisflies, which are lacking in the Hawaiian list. 
Economic VALUE OF THESE Foops.—The chief concern here is the effect upon 
the life of the fish produced by such wholesale and untiring destruction of the insects 
around the ponds, as is revealed in these food lists. In dealing with this problem 
certain considerations are forced upon the attention. 
It will be urged, in the first place, as in the case of the nymphs, that the killing of 
so many adult Chironomids, Ephemerids, and Culicids seriously diminishes the number 
