f104 MESSRS. p. r. A. WTXT>LE A"VT) F. G. PAEROKS ox [DeC. 19, 



ramus of the pnbes near the acotahuhim, the lower from the ob- 

 turator meuibraue and horizontal ramus of the pubes. In tiie 

 NiinnecOjiluigUhf the muscle is present iu Tamandua (14, 15) and 

 Cyclothiiriis (17, 20). In the Dasypodvla; it is present in Da»iipus 

 (22, 23) and Tatusia (25), and was fouud in ChJamydopJiorus (28a), 

 though not iu the other two specimeus (27,28). In the Manidxe 

 it teuds to fuse with the quadratus femoris(29, 32, 33), but in oue 

 case (34) it A\as quite dit^tinct. In the Ori/clemjwdidce (35, 36) it is 

 present and normal. 



Quadratus fonoris. — This muscle is present with the usual 

 attachments in Bradypug (^1. 4, n, 6), thou^h Humphry failed to 

 lind it in liis specimen (2). It is also present in Cholcepus (8, 10). 

 In Tamandua ( 14) among the MynnecopliacjidcB it is present, but in 

 Cyclothnriis (17, 20) it is described as wanting. In the Dasypodidfp 

 it is a strong, distinct, rounded mass in Basypus {22, 23, 24), which 

 rises from the ischial ramus under cover of the adductor mass, 

 and is inserted into the posterior aspect of the lesser trochanter. 

 In Tatmia (25) it was absent, while in CMamydopiJioyus (27,28) 

 it Mas present and triangular in shape. In the Jlanidtr; the fre- 

 quency with which it becomes fused w ith the obturator externus 

 has already been noticed. In the Orycteropodidce it was absent in 

 both Humphry's and Galton's specimeus (35, 36). 



Pectineus. — In the Bradiipodida>, Brady pus is remarkable for 

 the extensive insertion which this muscle possesses, as it is attached 

 to the whole length of the shaft of the femur (1,3). In one speci- 

 men (4) it consists of superficial and deep layers, and in that 

 figured by Cuvier & Laurillard (6) it is divided longitudinally. In 

 Cholcepus (8, 9, 10) it rises from the pectineal tubercle, and is 

 inserted into the upper half or somewhat less of the femur. In 

 the MyrmecopJiagid(e,the muscle is single in MyrmecopjTiacja (11, 12) 

 and Cydothurus (17, 19, 21). In the former animal it arose from 

 the brim of the pehis opposite the ilio-pectineal eminence, and was 

 inserted into the upper two-thirds of the shaft of the femur. It 

 was entirely supplied by the anterior crural nerve. In Tamandua 

 (14) it was double, and the part which rose superficially was in- 

 serted by a small tendon just above the middle of the femur. The 

 deeper portion was inserted above the last and in the same line 

 with it, reaching as high as the lesser trochanter. In another 

 specimen (15) liapp describes the muscle as very thick. In the 

 Basypodido' the muscle seems usually to be single and small. In 

 the Manidxe it is also small but distinct, and is inserted just below 

 the lesser trochanter. In one specimen of Orycterop/m (35) Galton 

 found the pectineus double ; one portion was strap-shaped and 

 passed from the ilio-pectineal eminence to the linea aspera, the 

 other part from the same origin extended to the posterior inter- 

 trochanteric hoe. In Cuvier and Laurillard's specimen it was also 

 double (37), whilst in the animal dissected by Humphry it was 

 single (36). 



Adductor femoris mass. — In Bradypiis (1) the adductor longus 

 was distinct and, rising from the ilio-pectineal line, extended to the 



