NO. 6 CUSHMAN, MCCULLOCH : LAGENIDAE 329 



a range of depth from 44 to 163 fms. with the average being 88 fms. 

 The largest number of specimens in one collection was off Santa Bar- 

 bara Island in 40 fms. 



Subfamily Lagcninae 



Genus LAGENA Walker and Jacob, 1798 



Lagena acuticosta Reuss, var. 



Plate 43, Figs. 9, 10 



A great many forms have been assigned to this species which like 

 many species of Lagena is very variable. A group of these forms is figured 

 here and other intermediate forms might have been included to show the 

 close relationships of the different ornamentations. 



Stations: A-1, A-2, A-15, C-12, Or. 7, Or. 8, Or. 9, 1, 3, 4, 39, 80, 

 82, 123, 127, 144, 1005, 1008, 1009, 1010, 1011, 1013, 1014, 1017, 1019, 

 1024, 1062, 1063, 1093, 1096, 1097, 1099, 1100, 1103, 1107, 1108, 1110, 

 1111, 1112, 1114, 1119, 1121, 1123, 1125, 1130, 1133, 1136, 1137, 1139, 

 1141, 1142, 1143, 1148, 1150, 1151, 1153, 1157, 1158, 1161, 1162, 1163, 

 1165, 1167, 1168, 1170, 1172, 1177, 1179, 1182, 1190, 1193, 1194, 1195, 

 1196, 1200, 1205, 1210, 1219, 1220, 1221, 1223, 1228, 1229, 1230, 1232, 

 1233, 1234, 1242, 1245, 1246, 207, 208, 209, 224, 227, 232, 291, 2000, 

 2002, 2008, 2070, 2157, 2159, 2164, 473, 616, and 648. 



Distribution. — Stations A-1 through 1246 show a continuous range 

 from Alaska to numerous stations in the waters off the Channel Islands. 

 The depth range established by these records is 2 to 340 fms. with the 

 average being 56 fms. Stations 218 through 2167 are records with the 

 exception of Station 291 in Concepcion Bay, Gulf of California, off the 

 West Coast of Mexico showing a range of 10 to 250 fms., the average 

 being 70 fms. Additional records from Hood Island, Gibraltar and 

 Australia give an average depth of 40 fms. The numbers of specimens 

 found in the several collections showed little variation as to abundance. 



Lagena amphora Reuss 

 Plate43, Figs. 11-14 



This species has been placed by some authors as a variety of L. costata 

 (Williamson) but seems to be quite different. The forms which we have 

 figured as belonging to Reuss' species have an elongate flask-shaped test, 

 the basal end acute or slightly rounded, the apertural end much extended 

 as in the type. The surface of the test has numerous high, elongate costae, 

 some very long extending from the base of the test to the aperture with 

 others limited to the body of the test and ending at the base of the neck. 



