382 TEXT-BOOK OF ENTOMOLOGY 



Distribution of repugnatorial or alluring scent-glands in insects 1 



A. LARVAL INSECTS 



a. Each thoracic segment ; sternal. Phryganea grandis. 



b. Prothoracic, sternal, discharging a lateral jet of spray ; with a single large 

 internal sack. 



LEPIDOPTERA 



Family TINEID^E 

 Hyponomeuta evonymella. 



Family NOCTUIDJE 



Bryophila, Cucullia formosa, C. scrophularice, Habrostola, Cleophana Una- 

 rice, Catocala (sp. ), Aporia cratcegce, Aplecta nebulosa, Leucania staminea, L. 

 hispanica, L. nonagrioides, Plusia gamma. 



Family NOTODONTID^E 



Pheosia rimosa, Schizura concinna, Danima Banksii (Australia), Macruro- 

 campa marthesia, Heterocampa pulverea, Cerura vinula, C. furcula, C. borealis, 

 C. multiscripta. 



Family NYMPHALIRS: 

 Probably all the species. 



c. Prothoracic, dorsal; sending out a V-shaped odoriferous organ (osrnete- 

 rium). 



Family PAPILIONID^E 

 All the species as a rule. 



d. Thoracic sternal, evaginable glands. 



Family PEROPHORID.S: 

 Lacosoma chirodota, Perophora melsheimerii. 



Family 

 In three, and probably in all the species of Nola. 



e. Lateral, abdominal, non-eversible glands, one near each spiracle, emitting 

 a clear fluid. 



Family TENTHREDINIDJE 



Croesus septentrionalis, C. varus, Cimbex americana, C. betula:, Trichiosoma. 



f. Lateral, abdominal, partly eversible glands emitting neither moisture not 

 odor, but flesh-colored. 



Family TINEID^E 

 Phyllocnistis ? (eight pairs.) 



1 Embryonic or temporary glands, the " pleuropodia " of Wheeler, viz. the modU 

 fied first pair of abdominal legs, occur in (Ecanthus, Gryllotalpa, Xiphidium, Steno- 

 bothrus, Mantis (occasionally a pair on the second abdominal segment, Graber) ; 

 Blatta, Periplaneta, Cicada, Zaitha, Hydrophilus, Acilius, Melolontha, Meloe, Sialis, 

 Neophylax. (See Wheeler, Appendages of the First Abdominal Segment, etc., 1890.) 



