160 DK. B. C. A. WINDLE AND MR. F. G. PARSONS ON THE [Mar. 1, 



Quadratus femoris. — A large and fleshy muscle rising from the 

 tuberosity and ramus of Ihe ischium, and being inserted into the 

 inter-trochanteric line of the femur as well as the surface of bone 

 below on a level with the lesser trochanter. As a rule it is quadri- 

 lateral, but sometimes the insertion is narrower than the origin ; 

 this, however, seems to depend very little on the relationships of 

 its possessor. TVatson (XIII.) describes the muscle as wanting 

 in Froteles. 



llio-tihialis (Sartor ius).- — This rises from the ventral portion of 

 the crest of the iliiun and is inserted into the inner side of the 

 patella, ligamentum patellae, and cnemial crest of the tibia. In 

 many of the Carnivora it is double, and when this is the case the 

 anterior part is usually inserted into the patella, the posterior into 

 the tibia. 



Among the Felidse the muscle is appai'ently always single ; this 

 is the case in Felis ho (1, 2), F. tigris (4), F. pardus (5, 6, 7), 

 F. pardcdis (8), and F. catus (9). 



Among the Viverridse the muscle may be single or double. In. 

 the following it is single : — Cryptoprocta (13, 14), Viverra (16), 

 Genetia (24), and He^pestes (30). In the following it is double : — 

 Viverra (17), Viverrinda (19), Genetta (20, 22, 23), Paradoxurvs 

 (25, 26), and Herpestes (29). In C'yniciis (31) the two parts are 

 united by fascia, while in Froteles (32) the muscle divides near 

 its insertion. In the specimen of Genet (23) which we dissected 

 the muscle was bilaminar, the superficial part going to the tibia, the 

 deep part to the fascia over the rectus and vastus intemus in 

 the middle of the thigh. 



Among the Hysenidse the ilio-tibialis is ah\ays double : — Hymia 

 striata (33, 35, 36) and H. crocuta (37). In Hycfua striata (33, 

 36) the shorter part joins the rectiis and acts as a fifth head of 

 the quadriceps extensor. 



Among the Canidse the muscle is also double ; this was the case 

 in the following eight specimens of Canis famiJiaris (£j9, 41, 42, 

 43, 44, 45, 46, 48), in C. aureus (50, 50 «), in G. mesomelas (51), 

 and C. lacfopus (53). 



In the Ursidae it seems to be usually single ; this is the case in 

 Ursus arctos (57) and U. americauus (59, 60, 62), 



Among the Procyonidse it is single in Procyon lotor (63, 64, 65, 

 66), F. cancrivorus (67), and Cercolepttes (72). In Nasua narica and 

 fusca (68, 69) it divides at its insertion according to Mackintosh, 

 but in Cuvier and Laurillard's plate of Nasua rufa (70) the muscle 

 is single. 



In the Mustelidse it is single in Galictis vittata (75) and harhara 

 (76), Mvstela foina (78, 82), Idonyx lihyca (84), Meles taxus (85, 

 86), and Lutra {^S, 89, 90). Macalister also says that it is single 

 in Lutra cinerea (93). It will thus be seen that the ilio-tibialis is 

 always single in the Felidae and very generally so in the Ursidae, 

 Procyonidse, and Mustelidse. In the Hyaenidae and Canidae it is 

 always double, while in the Viverridae it may be single or double. 



Adductor cruris (Gracilis). — This muscle is al\>a\s single in the 



