290 THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 
RHACHIANECTES GLAUCUS COPE. CALIFORNIA. 
peg | & Beh 
Measurement. 276 5 26. a Bee 
oma & ona el ae G} 
aRan a2Q | nman 
fis ans ft. in. {t-) ins, 
Total length\seryerrroeeernerere tele srs cose nee. oe sker ere reeemen anata alcatel 42 <0) |)'48) Tope zano 
SrvoVnis Uo) lon OME. cooSaedsoseacasae usectedorocosaduodoocooeas 6 0 4 9 ° 
PP eon croy gave (lr Jan ROE ns ERO ae pHecA Sere he DOB poo saps i || te) CR ocass 
Bo ISS conta aid OOO Ein ee Lee eae oes on cnt Code be Poel meri (On lancom 26? NN Gece 
ae) US Tavevclio) «2 Ce eee Departs yo > Sis eee pawns ans Soto: ie 6) ate yee 
INGEN OH MiSs WO EN dg aco ootiodiqogo barrage gadacooduGss acon io) TeAhen Olse | Pancebeee 
OO PPPS Seer Sheol Ghodesonmoewehonadand ofAnes 500K 16 8 NOI" sl) osetces 
IL Sayegh Oh (NSE SA o ooo ns oueHoc acer ss sass sbad ans aaaasnss scl) 6 0 50. 
Width “ a Be ie ao cer One En Mam eee ine aad BLOM | UES (9) 
a Bee ahh etna oes ceeteCINrO 6 ace tention Joo sesumoceds 10 0 8 © mae) 
Circumference abipoimt oeipe Ctomdl Specter tei- pete k electra tt enti: Me CO | Soon I) oooos 
Distancertromyppectorals| tontop Olea kssys err reir etcetera ret ert APO. esl cabak ook 0 liteaoterees 
- Eloneavern (OV Vanvovatislel 16) Wojo) Git IMEI 4 moe omer socurcoocnsouge: 2 604 I ancl Ill sedans 
Ib eavetd a Ort IMOMMNONES. cocancneco upoteonn sees SuDE KOs aboouobOSHE ON Si" ||) Crnercone, aillllemuenentys 
[NaiterfooOigs nore lowsEKalslsl (Oh! WIWIKES > cocoon Hocounna ooducdséucncusan Se Ge WN oodoot | cada 
AME SNASS Che Gael MO VAC MNES 4 gooceg sans pune sane sU beodnoodSs Ol Oy ill Sirsa dh eerasces 
Depth of caudal peduncle at junction with flukes.................. i Or |) saoso || oooor 
Ibforese EN GaeaGls DEyOaGl WS WPS ocpoon sone coon cope KodouH DOES aooC Zk |} ovcoe 
Ibert Oh eeu Site oboe parcong cugahon 106 aboo bec opOnODCD Se sects mm O || sanad 
Bromypsenitalyslit tomer fee Clonal Sai gererelelatatettelctalieraeleien tate l st eenererets Ged GS Ou |Moraarte 
=) plinelofspectorals toend.of man diblem.trcreemere tele r tert eterereren: ares PG Ou eeterenete 
Menpthvofiexterionicanthwsyof mo Ut hermeretits -\craetercienetetuelaaletetetat later 3008 m O. i[sucos 
FE igoyen GO VO. saengeahar Ohh GAM WS ocosednonoescodcnhen abot das 2000 OO fl cacos 
Widthrofamomthwatacantausrererersltmereteratettete aici rletelerten tte t iets teleeitaets epee ie Cio Wo cs on 
IbomEaiy lls eqoHbidn OUD dOOO GEOL ON OADEOOOCOnaRGoOS SO O0 a ga.ti mn Ti 2) 1 0. 
Wadthvotmlarcestabal Comer srmpcteteiatcteretereteteteteie= cole tal-rerelereloveu te tetcgelaterenaretste OP AG) iokasao, il moos 
enethvofilarcestibristlesio fiball cen nersteleriela <(uetrtteleliterettetenetttcnere OT AS Alorercte, bell meer 
These measurements are so little in accord that new observations are very 
much to be desired. 
WHALEBONE. 
The larger portion of the whalebone of one side of the mouth, from a speci- 
men taken at San Luis Obispo, Cal. (No. 28306, U.S. N. M.) was sent to the National 
Museum by Mr. C. H. Townsend. This whalebone is entirely yellowish-white, 
both blades and bristles, except at one end of the series. Here for a distance of 
about 8 inches the blades and bristles are dull chocolate-brown. The end-blades 
are entirely brown, the next have some white on the inner side, then follow a 
number brown on the outer edge only, and finally all white, like the majority of 
the series. The blades are very thick on the outer margin, with a rounded edge. 
The largest plates measure 18 in. in length without the bristles, and 6 in. at the 
base. The longest bristles measure 94 in., and were perhaps originally a little 
longer. 
OSTEOLOGICAL CHARACTERS. 
The skeleton of /hachianectes has been described in more or less detail by 
Dall (26, 226-227), Van Beneden (6), Malm (67) and Beddard (2, 168). 
There is a skull in the National Museum (No. 18803) which Mr. Dall obtained 
‘From end of mandible. * From length of mouth. * From chin to eye. 
