226 



Hl'I.LKTIN OK TIIK Hl'KKAl' OK KISUKKIKS. 



COMTAUAI'IVK Mf.ASIKKMKN'I'S O K Poi.ISTO TUKM A STdUTl AMI P. DHANI. 



I'olistotrcma stotUi. 



No. of 

 spooi- 

 1110 n. 



50 

 51 

 .52 

 .53 

 54 



58 

 59 

 CO 

 61 

 62 

 63 

 64 

 65 

 66 

 67 

 OS 

 09 

 70 



72 

 73 

 74 



76 

 77 

 78 

 79 

 80 

 81 

 82 

 83 

 84 

 85 

 80 

 87 

 88 

 89 

 90 

 91 

 92 

 93 

 94 

 95 

 96 



Tip of 

 snout 

 to ti(> 

 of tail." 



mm. 

 430 

 481 

 475 

 464 

 .503 

 42(1 

 442 

 490 

 355 

 480 

 472 

 380 

 390 

 410 

 510 

 .103 

 485 

 412 

 486 

 465 

 400 

 467 

 440 

 512 

 37S 

 438 

 460 

 436 

 370 

 383 

 438 

 550 

 473 

 478 

 427 

 492 

 430 

 48(1 

 545 

 510 

 488 

 476 

 482 

 440 

 444 

 413 

 412 

 463 



snout 

 to con- 

 tor of 

 first gill 

 open- 

 ing. 



mm. 

 lOii 

 124 

 115 

 114 

 122 

 94 

 104 

 118 

 89 

 125 

 110 

 92 

 93 

 111 

 122 

 120 

 113 

 105 

 110 

 114 

 112 

 114 

 110 

 125 

 95 

 103 

 127 

 110 

 90 

 95 

 110 

 131 

 109 

 114 

 100 

 119 

 105 

 116 

 125 

 116 

 123 

 112 

 lis 

 109 

 112 

 98 

 98 

 120 



Polislolrema deani. 



n Not including tentacles. 



PoHstotrema dianl is known fnun 4 spi^cimcns, all in rullici- ]ici(ir cnnditiuM; Two, no. 28(16 and 2867, 

 19 anil 21 inches long, n'spectively, dredged tiy Ihe Albalri>s.i in J90:>. in ];!() to l!):i fathoms at titation 

 42o.5, in Spacious Bay, Cleveland Peninsula. Alaska; and two, no. 2877 and 2,S80, 24,5 and 18.5 inches 

 long, di'cdgcd on same date in 229 to 231 fathoms at station 4238, in Behm Canal off Nose Point. 



Type no. 57820 U. S. Natiimal Museum (liekt no. 2880), All)atross station 4238 in Behm Canal off 

 Nose Point, in 229 to 231 fathoms. The three other specimens are cotypes, of which two are dejxisitcd 

 in the U. 8. National Museum and one in the Museum of Stanford University. 



Wc take great jilea-sure in naming this interesting species for Prof. Bashford Dean, of Coluniliia 

 University, in recogniliou (.f his cxcellcnl work ''On the Embryology of Bdillosloma .^touh." 



