XrV LEST OF ILLUSTRATIONS. 



Page. 



Ateloplus scliwurzi. Cercus of immature male; cercus of adult uiale o72 



Atdoplus luteus. Cercus of male o7o 



Idiostatiis a^quaUs. Adult male; cercus of male; last denial abdominal seg- 

 ment of male 377 



Idiostatus nevad nsii^. Last dorsal abdominal segment of the male 378 



Jdiostatus sinuata. Cercus of male; last dorsal abdominal segment of the male. 379 



Idlosta.'us biUneata. Cercus and last dijrsal abdominal segment of male 380 



Idioslaius fuscopunctatus. Cercus of male; last dorsal abdominal segment of 



male 382 



Idiodatun rehni Adult female 383 



Jdiostatus rehni. Cercus of male 38-4 



Idiostatus elegans. Adult male 38-i 



Idiostatus elegans. Cercus and last dorsal abdominal segment of male 385 



Idiostatus inermis. Cercus of male 386 



Plagioslira albonotaia. Adult male; cercus of male. Var. hrcvijx-s, ovijiositor. 390 



Plagiostira gillettei. ]Male 393 



Idionotus brunneus. Adult female; pronotum of female from above; cercus of 



adult male 395 



Idionqtns brevipes. Cercus of mature male 396 



CUnopleura melanopleura. Adult male; cercus of male; pronotum of male 



from above; ovipositor from the side -400 



CUnopleura minuta. Cercus of adult male 402 



Plattjcleis fetcheri. Adult female 404 



Steiro.rys triUneata. Adult female; pronotum of female from above; cercus of 



adult male ; cercus of adult male 407 



Steiroxys pallidipalpiis. Cercus of adult male 408 



Steiroxys pallid ipalpus. Cercus of adult male ( variety ) 4C9 



Steirox[is borealis. Cercus of adult male 410 



Acanthophacelus reticulaius, showing color variation in the male 426 



Tip of intromittent organ of AcanthopJiaeelus reticukdns. Third anal ra^'; 



fourth anal ray ; fifth anal ray 427 



Tip of intromittent organ of Clarididitluis uninotutus. Third anal ray; fourtli 



anal ray ; fifth anal ray 427 



Enlarged tip of the intromittent organ of (I'laridiclithi/x uni)n)t(ifnx. Third anal 



ray ; fourth anal ray ; fifth anal ray 428 



Distal i:)artsof the intromittent organ of (rirardi)ius inet((llicus. Tliird anal ray; 



fourth anal ray ; fifth anal ray 429 



Distal partsof the intromittent organ of PhalloptyrJms jauuurius. A, Thee raan 



as it is normally found; B, unfolded; ((/, third anal ray; b, fourth anal ray; 



c, fifth anal ray). C, third anal ray, three-fi)urths view; D, fifth anal ray, 



enlarged 430 



Distal parts of the intromittent organs of PhaUoceros caiidomacidatu-'i. a, Th!ril 



anal ray; b, fourth anal ray; c, fifth anal ray 431 



Fundulus paraguayensis. ( Type ) 432 



Cynolebias j)orosus. (Type). ^/, Head from above; h, lead from Ijeneath 432 



Cynolebias bellottii. a, Head of same .- 433 



Cynolebias maculatns 433 



Spherarmadillo sclncarzi. a, Dorsal view; b, second antenna; r, flagellum of 



second antenna; d, lateral part of first thoracic segment (lateral view); r, 



lateral part of first thoracic segment (ventral view); /', last two segments of 



abdomen with uropoda; g, uropoda (ventral view ) 448 



Seriola qu inqueradiata 494 



Tracliinotus bailloni 495 



