XVI PKOCEEDINGS OF THE NATIONAL MUSEUM vol. 7& 



Three New Parasitic Nematode Worms 



By Mary Scott Skinker 



Facing page 



1-6. Melabronema canadense 2 



7-11. Passalurus nonanulatus and P. ambiguus 4 



12-19. Meiathelazia californica 6 



Descriptions of New Genera and Species of Siamese Fishes 

 . By Hugh M. Smith 



1. Botia beauforii 3 



2. Botia horae 4 



3. Laubuca caeruleostigmata 5 



4. Labeo bicolor 10 



5. Cyclocheilichthys tapiensis 11 



6. Puntius stigmatosomus 14 



7. Barilius koratensis 17 



8. Barilius pulchellus 18 



9. Epalzeorhynchus siamensis 21 



10. Under side of head of Scaphognaihus stejnegeri 23 



1 1 . Scaphognaihus stejnegeri 23 



12. Mystus havmolleri 24 



13. Pangasius sanitwongsei 29 



14. Maxillary and vomero-palatine teeth of Pangasius sanitwongsei 29 



15. Synaptura aenea 32 



16. Gobiella pellucida 34 



17. Thaigobiella sua 36 



18. Eugnathogobius microps 38 



19. Pipidonia quinquecincta 39 



20. Paragobiodon kerri 43 



21. Cryptocentrus leonis 46 



22. Apocryptodon malcolmi 48 



Three New Species op Poltchaetous Annelids from Chesa- 

 peake Bay 



By Aaron L. Treadwell 



1 . Pionosyllis manca, new species 2 



2. Myriana cirrata, new species 3 



3. Prionospio plumosa, new species 4 



A New Species of Nematode Worm from the Sage Grouse 



By Everett E. Wehr 



1-3. Habronema urophasiana 2 



Description of a New Genus and Species of Nematode Worm 

 Occurring in the Northwestern Belted Kingfisher, with 

 A Key to the Genera of the Subfamily Acuariinae 



By Everett E. Wehr 



1-5. Aviculariella alcyona, new species 2 



