Acoetes Audoin and Milne-Edwards, 1832, and Euarche Ehlers, 1877." 12 

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474. Vari, Richard P. "Systematics of the Neotropical Characiform Genus 

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477. Buden, Donald W., and Storrs L. Olson. "The Avifauna of the Cayerias 

 of Southern Cuba, with the Ornithological Results of the Paul Bartsch 

 Expedition of 1930." 20 November 1989. 



478. Davis, Donald R. "Generic Revision of the Opostegidae, with a 

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 October 1989. 



479. Spangler, Paul J., and Philip D. Perkins. "A Revision of the 

 Neotropical Aquatic Beetle Genus Stenhelmoides (Coleoptera: Elmidae)." 28 

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480. Hobbs, Horton H., Jr. "An Illustrated Checklist of the American 

 Crayfishes (Decapoda: Astacidae, Cambaridae, and Parastacidae) ." 28 

 December 1989. 



481. Vari, Richard P. "Systematics of the Neotropical Characiform Genus 

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 December 1989. 



484. Sierwald, Petra. "Morphology and Ontogeny of Female Copulatory Organs 

 in American Pisauridae, with Special Reference to Homologous Features 

 (Arachnida: Araneae) . " 4 December 1989. 



485. Tyler, James C, G. David Johnson, Izumi Nakamura, and Bruce B. 

 Collette. "Morphology of Luvarus imperialis (Luvaridae) , with a 

 Phylogenetic Analysis of the Acanthuroidei (Pisces)." 4 October 1989. 



486. Cairns, Stephen D. "A Revision of the Ahermatypic Scleractinia of the 

 Philippine Islands and Adjacent Waters, Part I: Fungiacyathidae, 

 Micrabaciidae, Turbinoliinae, Guyniidae, and Flabellidae . " 29 November 

 1989. 



487. Cole, Linda L. "Catalog of Tunicate Type Specimens in the United 

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488. Mooi, Rich. "Living and Fossil Genera of the Clypeasteroida 

 (Echinoidea: Echinodermata) : An Illustrated Key and Annotated Checklist. 

 27 December 1989. 



489. Bruce, Niel L., and Thomas E. Bowman. "Species of the Parasitic 

 Isopod Genera Ceratothoa and Glossobius (Crustacea: Cymothoidae from the 

 Mouths of Flying Fishes and Halfbeaks Beloniformes) . " 27 December 1989. 



491. Moynihan, Martin. "Social, Sexual, and Pseudosexual Behavior of the 

 Blue-bellied Roller, Coracias cyanogaster : The Consequences of Crowding or 

 Concentration." 21 February 1990. 



492. Williams, Jeffrey T. "Phylogenetic Relationships and Revision of the 

 Blenniid Fish Genus Scartichthys . " 19 January 1990. 



493. Roper, Clyde F.E., and C.C. Lu. "Comparative Morphology and Function 

 of Dermal Structures in Oceanic Squids (Cephalopoda) ." 



7 March 1990. 



495. Kornicker, Louis S., Jill Yager, and Dennis Williams. "Ostracoda 

 (Halocyprididae) from Anchialine Caves in the Bahamas." 7 March 1990. 



496. Coddington, Jonathan. "Ontogeny and Homology in the Male Palpus of 

 Orb-weaving Spiders and Their Relatives, with Comments on Phylogeny 



(Araneoclada: Araneoidea, Deinopoidea) . " 23 April 1990. 



500. Higgins, Robert P. "Zelinkaderidae, a New Family of Cyclorhagid 



Kinorhyncha. " 7 March 1990. 



Studies in Air and Space 



7. Douglas, Deborah G. "United States Women in Aviation, 1940-1985." 27 

 July 1990. 



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