60 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
TABLE 11.—Measurements in mm. and computations for Bucerophagus africanus 
(see p.47 for explanation of formulae) 
Females on host 2, Head Width Total 
Bucorvus length 
leadbeateri Length Width Prothorax Metathorax Abdomen 
N=4 0.471 0. 621 0. 557 0.714 1.328 3. 243 
457 . 593 . 557 . 678 1.143 3. 000 
457 . 636 . 514 . 764 1.393 3. 321 
-471 . 628 . 536 - 743 1.321 3. 386 
Sx2= 1.856 2.478 2. 164 2.899 5.185 12. 950 
X3= 0. 464 0. 620 0. 541 0.725 1. 296 3. 238 
Sx}= 0. 861 1. 536 1.172 2.105 6. 756 42. 011 
(Sx2)2= 3. 445 6. 140 4. 683 8. 404 26. 884 167. 702 
(Sx2)?/N= 0. 861 1. 535 1.171 2.101 6.721 41. 926 
S(x—x2)2= 0. 000 0. 0010 0. 0010 0. 0040 0. 0350 0. 0850 
sz = 0. 000 0. 000333 0. 000333 0. 00133 0. 0117 0. 0283 
Males on two hosts 
SE= - 0138 . 00797 . 00797 . 0127 . 0239 . 0203 
p= . 063 . 032 . 009 - 034 - 005 . 096 
CL= - 063.033 .032+. 019 009.019 .034+.030 . 005+. 056 - 096=t. 048 
SE= . 0112 . 00913 - 00913 . 0194 - 0478 . 1290 
D= - 020 . 021 - 018 - 005 - 081 . 063 
CL= -020+.027 . 021+. 022 - 018.022 .005+.047 . 081.116 - 063=b. 316 
TABLE 12.—Measurements in mm. of Bucerophagus (from specimens from which 
drawings were made and from hosts, in parentheses, other than those from 
which drawings were made) 
Length Width 
Male 
Head Total Head Prothorax Metathorax Abdomen 
forcipatus OFSI8) A725 0.492 0.413 #0. 565 0. 625 
(B. r. sumatranus) . 322 . 622 . 438 . 570 
(B. r. borneoensis) soo 5 tailis) . 431 . 652 
productus . 386 2.080 . 528 . 464 . 578 . 750 
africanus .457 2.488 . 586 . 500 . 686 1. 050 
Female 
forcipatus 5 BUD) ale IP . 544 . 435 . 667 0. 950 
(B. r. sumatranus) 850 . 584 . 464 . 677 
(B. r. borneoensis) . 344 . 580 . 467 . 678 
productus .464 3.172 . 636 - 936 . 714 1055 
africanus AVM ono . 636 . 557 . 764 1. 390 
