12 
138 
14 
15 
AQUATIC INSECTS IN NEW YORK STATE 499 
Anal end of the larva with its prolegs. x50 
Dorsal aspect of the male genitalia. x50 
Foot of middle leg of female 
Wing of male. C Costa. Sc Subcosta. R Radius. M Media. Ov 
Cubitus 
PLATE 51 
Sialis infumata 
1 and 2 Eggs 
3 Lateral filaments of the larva (photomicrographs). 
PLATE 52 
Corydalinae 
Imagos and eggs 
1Chauliodes serricornis ¢. Natural size 
2 Hggsof Chauliodes sp.? Enlarged 
8 Neuromus pallidus 4. One-sixth enlarged 
BOL eH 
*Electros from Needham’s Out-door Studies for plate 16, fig. 6, plate 17, fig. 8 and 5 and 
_ LIST OF TEXT FIGURES! PAGE: 
Mane Oe llibactis SKOK 1a Wai ee see ces swe he eee 215 
Abdominal appendages of male Callibaetis skokiana.... 216 
monroe 2alopreryx Maculat as. .c.c. ese ac cine ss wee Deal 
Antenna and gills and end of abdomen of nymph of Hetaerina 
ME REREAD TAI) here eran tele. ects sees tess. 8 avtal at alley avay 80) 0 av erE, a) oh bre wile, w copie, Sle @ipi ale 227 
Male abdominal appendages of Hetaerina. @H. americana. 
PMMA ILE OV LGO acne c. s2: le oun ores ot) pare oP ois ome ape, ehe sos) 6 ara tot aac aianiees ware 228 
Rereeremncn LECT S BAC OSH UEIE GANG ies cere erm: ata) en oa ais ere 0 wre p oes ojoie sols eae 230: 
Pion EkeC.9 Ge S BReECTAMSUlLATIUS.:. 02 ..ccccc cows ese ceeee 231 
More wing of Argia fumipennis, with a portion of hind 
eee Ts Tain cPeh = ciohe che) oat! ola) sie a enaheie aie eis. aceie «0's oom Bupita's poe. © 238 
Outline of head of nymph of Argia apicalis, dorsal view.. 239 
Nymph of Enallagma signatum. a Lateral view of gill 
DIATE .6 5 os. eve eres aca eset ever ane nay ahaha hiNahare.ccieha gata GSpmie al'el Boa au each. pisvaeR 252 
Abdominal appendages of male Enallagma durum........ 253 
Comparative drawing of labia of Enallagma gsignatum. 
(aand 6b) and Ischnura verticalis (cand 4d), with lateral 
lobe of each detached and flattened out, and viewed from within. 259 
Dene event th a W Ol LV Gia! TGs vee dame c wie ou oh ae cabo cnee s 259 
Dabium of the nymph of Gomphus dilatatus....ccssssene 206 
Labium of the nymph of Cordulegaster saysi........se0e. 268 
End of abdomen of the nymph of Sympetrum corruptum 271 
Labium of the nymph of Sympetrum corruptum........ 272 
Anal gills or larva of Hpiphragma fascipennis........ 283. 
Ventral aspect of head of unknown Tipulid larva from spring..... 285 
PRC ee Merete Gores WLS CA A GSE GN Fl ole. ae 7a nek eb ee ee we dae sb es 444 
Sere fer TAY OL Lie A Ae TL eM TYPE Lge ORGS cava pia'e's 0 om! a ace pin Sue wine a hrka ree 445 
Pee ge eae Oe I ot Bs Rew rays aaah rally ees ee Shecueeee 447 
Tikes yr ina le 67 ot eMimey By BY Fag Fe Yl Ou Tse 0 gt: RP: a <r 447 
Mess WA OL CMEILMOUOM,  KGve sav vics's dicen adcpeavvinvacsccve cewe’s 453 
io one oN Ow ee ty Aly d Oh WB, els scaa-abxecuavaeccte 405 
Pore wing Of OoOry dag lis. cord atey “2. iii cveaseweewass 471 
text figures 3 and 7 have been kindly loaned for use in this report by the American 
Book Co. 
