32 BULLETIN 720, U. S. DEPARTMENT OF AGRICULTURE. 
TaBLe II.—Items of animal food identified in stomachs of mallard ducks and the number 
in which found—Continued. 
Black Southern 
S Common 
Kind of food. black 
mallard. uck duck 
Total number of stomachs examined: <0 222 se ane a eee é | ps) 622 51 
Ciass Insecta (INSECTS)—Continued. 
Order HYMENOPTERA (Ants, Bees, and Wasps). 
Wnidentified oe ea ee Ss See ea re ee 5 Srlteeseseees 
JA POIG G2 (DEES) oa 5 oe or eg as Se A ee ee a ee i a 1S Beene Cacia Soe 
Vespoidea: (wasps) << ss55-2 S25 oN a ee eee D1 22 5oe cee ee 
Chrysidoides.(cuckoo-wasps) 5.320 Sst ee es ee 18 ee Pe eee 
Ichneumonoidea (parasitic wasps). 
SEV OMRALELES SP) ase a eI ME ARS Se RE ate D | cae ee eee : 
IPROGERES SP sss aS Ss ates So So So ee | 2 Aas ee eae ae 
Formicoidea (ants). 
LOR EYES (203% 9h (6s Pep ee en eee oe Se eee aot ee a oe Oe wee Fees ed 33 | 4. | Bee eee 
Formicide. ; 
COMPONGUS SPs ees Sat Ee os se ee A is ee 1 eee erie ose 
SIG OVMIEICIOS Pinch es eee kT See ee ee en ee ee 2 [2 cane. ole 
PARE OLE ETL OLO ao are a aa ees oe ee OE Ee 1 eee ee fee cs 
UF ORET HO DUCICED Sm ee ees es ee igo Seen See 1 § (Sees eerie Te 
Unidentified 9s 23. (22-822. Some es es ee ae eee 2) coe eae faa See 
Fenthredinoides (Sawthes) iss. 5. se” ee ees aie ee Bi [eons eee Sees 
CLass Arachnida. 
Order ARANEIDA (Spiders). | 
Unidentified’spidersiand cocoons: <6 222. s22 5 22 nose soe ee 27 2 | Sic oe Se 
IS CRIZOGU IE SPs kate soe ee ee re ee SER A ea eae aren Rel hc 5. | | et eS 
Order ACARIDA (Mites). 
Eiydrachnides @waterimites) : 2-0-2252. 25.2 ee eee eee eee eee 14 hie See 
OFUD ALLA Fee Sos ee ee ae ee Bd AE OO ce ee rh Pee | Poe cee 
SUBKINGDOM Mollusca ! (MOLLUSKS). 
Wnidentifieds.<..<235..aus_- one eS 5 eo ere 20 5) dg See ace 
CLAss Gastropoda (UNIVALVEs). 
Widen tified, os ee se ea a gap aap 561 (ake! 1S 
Muricide. 
Nareelle: LOpRH Us. 5285s Sasha RSs a ry ce ee Uo Sei ess5525 
UOLOSOLPUNT CUN-EN CUS eS Peres ye meer  S L.Jaseargee3e 
Nassidz. 
Tlyanassa obsoleta..2......-...----- Meteo ba se Suen Rar ee | ee 8 | 1 
HIN OSSO: CULO, 6528 oe, Ra GE ee Te a 1S eee 
INOS GMDIGUE. 3s. = ee eet eee Sek ARE RE Lele fees | yt Sate 
NOSSO SP xo oc. 5 Veen oe bos Bae ee Se eee eae 63) 326295" 
Columbellide. 
MAMMCRIS QUOT, ~ 0 2 coe Son tee os ee ee ee 4 | 2 ee 
PA TIOCK?S OUCSE «2 = Sis ae 2 ose a nat es a ee 4 | eee 
PR SEUTES FIIEL =e win oa on ae bse oe ee 3 7 |. eee 
Pleurotomide. | 
| 
Clathurella jew etiics <22:25 oe osc Ss oh es ee ee iM aaa eee 
Matnyilan stele oo os ne 2 edn ee eee J |e 
MONG SDs io re aac Shale w wis wn Ne Se 1 hel pee a ee S Lico he ee 
1 Besides the species here listed for the southern black duck, Mr. F. C. Baker (O. & O. 14, p. 139, and Proc. 
Acad. Nat. Sci. Philadelphia, 1889, p. 267) adds the following: Cylichna oriza, Utriculus canaliculatus, Trun- 
catella subcylindrica, and Odostomia impressa. 
