2 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



the carina of the intermediate tooth is called the "first lateral"; and 

 the carina of the lateral tooth is called the "lateral carina." In the 

 present study the carinae of the marginal teeth are named for the 

 tooth on which they occur. Thus the carina of the submedian tooth 

 and its anterior extension are referred to as the "submedian." In 

 Odontodactylus there may be one or two carinae between the median 

 and each submedian carina; these are referred to as the "accessory 

 median carinae." The accessory median carinae are unique to 

 certain species of Odontodactylus; species in other genera, including 

 Pseudosqidlla Dana and Pseudosquillopsis Serene, have no more than 

 one accessory median carina on each side of the median carina. 



Measurements are given in millimeters. Total length (TL) is 

 measured on the midline, from the anterior margin of the rostral 

 plate to the apices of the submedian teeth of the telson; in the section 

 on material, the number appearing after the number of specimens is 

 total length. Carapace length (CL) is measured on the midline and 

 does not include the rostral plate. The eyes of Odontodactylus are 

 subglobular, with the cornea divided longitudinally by a distinct 

 band of ocelli. Cornea length is measured along this band, cornea 

 width across it. The width of the abdomen is measured at the fifth 

 abdominal somite. Telson width is the greatest width ; telson length 

 is the distance on the midline from the anterior margin of the telson 

 to the bases of the movable apices of the submedian marginal teeth. 

 Segments of the uropodal exopod are measured along their midline. 



The corneal index (CI) is obtained by dividing the carapace length 

 by the cornea width and multiplying by 100. The abdominal width- 

 carapace length index (AWCLI) , an expression of the relative width 

 of the body, is obtained by dividing the carapace length by the 

 abdomen width and multiplying by 100. The relation of the lengths 

 of the two segments of the uropodal exopod is given as the ratio ob- 

 tained by dividing the length of the proximal segment by the length 

 of the distal. In 0. cultrijer the relative height of the median carina 

 of the telson in males and females is expressed as the ratio of the 

 height of the median carina to the width of the telson. 



The synonymies given herein include original references as well as 

 references published subsequent to the work of Kemp (1913). Addi- 

 tional older references -will be provided in a synonymy of the Stoma to- 

 poda to be published in "Crustaceorum Catalogus" by L. B. Holthuis. 



Most abbreviations for repositories are given in the acknowledg- 

 ments below. The following abbreviations are also used in the text: 

 AM (Australian Museum, Sydney) ; BLIH (Biological Laboratory of 

 the Imperial Household of His Majesty, The Emperor of Japan). 

 Collections from these two sources have been discussed elsewhere 

 (Manning, 1965, 1966). 



