320 



SCIENCE. 



[N. S. Vol. V. No. 112. 



order shows L. bruneus to possess marked 

 primate characters in the arrangement of the 

 pectoral girdle muscles and the muscles of the 

 proximal segment of the anterior limb. This 

 is especially evident in the lateral recession of 

 the pectorales ; the compound character of the 

 ectopectoral insertion, the junctions of a pec- 

 toralis abdominalis with the typical entopectoral 

 insertion, and the presence of an axillary mus- 

 cular arch, derived from the tendons of the 

 Latissimus dorsi and connected with the deep 

 plane of insertion of the ectopectoral tendon. 



The presence of a third or inferior portion of 

 the coraco-brachialis is noted in addition to the 

 upper and middle portion usually present in 

 Lemuroidia. 



The ventral trunk muscles present a distinct 

 carnivore type in their arrangement, instanced 

 by the high thoracic extension of the rectus 

 abdominalis, the occurrence of a well-developed 

 supra costalis, the union of levator scapulae 

 and serratus naagnus, the thoracic extension of 

 the scalenus group ; interlocking both with the 

 serratus magnus and obliquus externus. 



The aponeurosis of the obliquus externuus 

 presents a well-developed division of the in- 

 ternal pillar of the external abdominal ring, 

 dove-tailing with the one from the opposite 

 side and forming the triangular ligament of the 

 same. 



Mr. H. E. Crampton, Jr., reported some of 

 his ' Observations upon Fertilization in Gastero- 

 pods.' 



The observations were made upon the eggs 

 of a species of Doris, collected last summer on 

 the Pacific Coast by Mr. Calkins, and upon a 

 species of Bulla which deposited eggs at Woods 

 Holl during the months of August and Septem- 

 ber. The results may best be summarized by 

 stating that a complete confirmation was ob- 

 tained of the accounts of fertilization given by 

 Wilson and Mathews, Boveri, Hill for sea- 

 urchins, Meade on Chetopterus Kostanechi and 

 Wiejyewski upon Physa, etc. The sperm nu- 

 cleus is preceded by the divided centrosome, 

 an aster, however, not being found till the union 

 of the germ-nuclei. The first polar spindle lies 

 at each pole a double centrosome, the second 

 maturation spindle but one. These are of great 

 size, however, and the one remaining in the egg 



finally disintegrates, the centrosomes of the first 

 cleavage spindle being derived from the sperm. 

 The germ-nuclei do not fuse, but lie very close 

 to one another, in contact. 



Mr. N. R. Harrrington gave an account of 

 the life history of Entoconcha, a mollusc para- 

 sitic in a Holothurian. His paper was illus- 

 trated by photographs. 



The following paper was read by title : 

 N. R. Harrington and B. B. Griffin : ' Notes 

 on the Distribution, Habits and Habitat of some 

 Puget Sound Invertebrates.' 



C. L. Bristol, 



Secretary. 



NEW BOOKS. 



Travels in West Africa. Mary H. King^ley. 

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Experimental Morphology. Charles Benedict 

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Microscopic Researches on the Formative Property 

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Traits elementaire de mechanique chemique. P. 

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Elementary Human Physiology. John Gray 

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 Fitzpatrick. Cambridge University Press. 

 1896. Part I., pp. 31. Part H., pp. 46. 

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