PART 1 GARTH : PACIFIC OXYRHYNCHA 25 



Solenolambrus arcuatus Stimpson. From Panama north to Tepoca 

 Bay, Gulf of California, Mexico ; from Panama south to Cape Pasado 

 [dskoy] and Santa Elena Bay, Ecuador. 



Leiolambrus punctatissimus (Owen). From Gorgona Island, Colom- 

 bia, south to off Esmeraldas [dskoy] and Salango Island, Ecuador. 



Mesorhoea belli (A. Milne Edwards). Lower California: from 

 Abreojos Point north to San Juanico Bay; from Panama Bay south to 

 off Cape Corrientes, Colombia (Velero III), and off Esmeraldas, Ecua- 

 dor [dskoy]. 



Cryptopodia hassleri Rathbun. Lower California: from Magdalena 

 Bay north to Santa Maria Bay; Gulf of California: north to Puerto 

 Refugio, Angel de la Guarda Island, thence south to Malaga Bay, 

 Colombia [dskoy], and Santa Elena Bay, Ecuador. 



Heterocrypta macrobrachia Stimpson. Lower California: from Mag- 

 dalena Bay north to Santa Maria Bay; Gulf of California: north to 

 Rocky Point, Sonora; from "Mexico" south to off Cape Pasado [dskoy], 

 and Santa Elena Bay, Ecuador. 



Heterocrypta occidentalis (Dana). California: from Gulf of the 

 Farallones north to Drakes Bay (N. B. Scho field) ; Channel Islands: 

 from Santa Catalina and San Clemente Islands west to San Nicolas 

 Island ; Lower California : from Los Coronados Islands south to Dewey 

 Channel, opposite Pta. Eugenio; Gulf of California: Outer Gorda Bank. 



Heterocrypta colombiana Garth. From Port Utria, Colombia, south 

 to off Esmeraldas, Ecuador [dskoy]. 



Method of Treatment 



Pertinent information concerning each species treated is presented 

 under the following headings : 



Synonymy: Every known citation in the literature, with the follow- 

 ing exceptions : ( 1 ) lists which enumerate species without giving specific 

 localities, e. g., Glassell, 1934; (2) Atlantic records for the few species 

 common to both oceans; (3) purely systematic discussions involving no 

 change in nomenclatorial status; and (4) non-systematic papers dealing 

 with physiological, embryological, or other experimental aspect. 



Type: The specimen material upon which the species rests, together 

 with the present location of such material, if extant. 



Type locality: The geographical site from which the type material 

 was obtained, together with the name of the collector, if known. 



Localities subsequently reported: Each published record of occur- 

 rence since discovery, arranged in geographical sequence, followed by 



